Wood-Mizer® Sawmill

Safety, Setup, Operation

& Maintenance Manual

1992 LT30HD rev. C7 - F7

1992 LT40HD rev. C7 - F7

Safety is our #1 concern! Read and understand all

! safety information and instructions before operating, set-

ting up or maintaining this machine.
October 1996
Form #625
 This manual is to replace or to be used with all previous information received on the
Wood-Mizer®* sawmill. All future mailings will be an addition to or a revision of individual
sections of this manual as we obtain new information.

The information and instructions given in this manual do not amend or extend the limited
warranties for the equipment given at the time of purchase.

If You Need To Order Parts...

From the continental U.S., call our toll-free Parts hotline at 1-800-448-7881. Please have
the vehicle identification number and your customer number ready when you call.
Wood-Mizer will accept these methods of payment:

Visa, Mastercard, or Select Purchase

COD

Prepayment

Net 15 (with approved credit)
Be aware that shipping and handling charges may apply. Handling charges are based on
size and quantity of order. In most cases, items will ship on the day they are ordered.
Second Day and Next Day shipping are available at additional cost.

If your sawmill was purchased outside of the United States, contact your distributor for
replacement parts.

ii HD92doc042701
If You Need Service...

From the continental U.S., call us toll-free at 1-800-525-8100. Ask to speak with a Cus-
tomer Service Representative. Please have your vehicle identification number and your
customer number ready when you call. The Service Representative can help you with
questions about alignment of your mill, blade sharpening, or cutting a particular species of
wood. He also can schedule you for a service call.

Office Hours:

All times are Eastern Standard Time. Please remember that Indiana does not go on Day-
light Savings Time in the summer.

Monday - Friday8 a.m. to 5 p.m.

Saturday8 a.m. to 4 p.m.

If your sawmill was purchased outside the United States, contact the distributor for ser-
vice.

IMPORTANT! Read the entire Operator's Manual before

! operating the sawmill. Take notice of all safety warnings
throughout this manual and those posted on the machine.
Keep this manual with this machine at all times, regardless
of ownership.

*Wood-Mizer® is a registered trademark of Wood-Mizer Products, Inc.

HD92doc042701iii
Your Vehicle Identification Number And
Customer Number

Each Wood-Mizer sawmill has a 17-digit Vehicle Identification Number (VIN). See the fig-
ure below for VIN locations. See the chart at the right for VIN description.

Each sawmill is also identified with a model number which includes the base model and
the engine/motor configuration. An ’s’ after the model number indicates the model is
approved for sale in countries that have adopted German "Gerprüfte Sicherheit: (G.S.)
safety standards. The model number is located on the middle blade housing cover. See
the figure at the right for a description of the model number.

When you pick up your mill, you will receive a customer number. Both the VIN and your
customer number expedite our service to you. Please write these numbers below so you
have quick, easy access to them.

VIN: ___________________________

Customer No: ___________________

Model No: ______________________

VEHICLE IDENTIFICATION NUMBER LOCATIONS.

iv HD92doc042701
 V.I.N. DESCRIPTION.

MODEL NUMBER DESCRIPTION.

v HD92doc042701
Table of Contents Section-Page
SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Blade Handling .......................................................................................................... 1-1
1.2 Sawmill Setup............................................................................................................ 1-1
1.3 Sawmill Operation..................................................................................................... 1-2
1.4 Belt Sizes ................................................................................................................... 1-4
1.5 Blade Sizes ................................................................................................................ 1-5
1.6 Cutting Capacity ........................................................................................................ 1-6
1.7 Engine/Motor Specifications ..................................................................................... 1-7
1.8 Overall Dimensions ................................................................................................... 1-8
1.9 Components ............................................................................................................... 1-9
1.10 Hydraulic Schematic ............................................................................................... 1-10
1.11 Hydraulic Components............................................................................................ 1-12
1.12 Hydraulic Hoses ...................................................................................................... 1-14

SECTION 2 SETUP & OPERATION 2-1

2.1 Stationary Sawmill Setup .......................................................................................... 2-1
2.2 Portable Sawmill Setup ............................................................................................. 2-2
2.3 Preparing The Sawmill For Operation ...................................................................... 2-5
2.4 Replacing The Blade ................................................................................................. 2-6
2.5 Tensioning The Blade................................................................................................ 2-7
2.6 Tracking The Blade ................................................................................................... 2-8
2.7 Starting The Engine (or Motor) ............................................................................... 2-10
2.8 Hydraulic Control Operation ................................................................................... 2-11
2.9 Loading, Turning, And Clamping Logs .................................................................. 2-15
2.10 Clamp Extension .................................................................................................... 2-18
2.11 Up/Down Operation ................................................................................................ 2-19
2.12 Blade Guide Arm Operation.................................................................................... 2-20
2.13 Clutch/Brake Operation........................................................................................... 2-21
2.14 Power Feed Operation ............................................................................................. 2-22
2.15 Cutting The Log ...................................................................................................... 2-24
2.16 Edging...................................................................................................................... 2-25
2.17 Blade Height Sight Gauge ....................................................................................... 2-26
2.18 Blade Height Scale .................................................................................................. 2-27
2.19 Water Lube Operation ............................................................................................. 2-30
2.20 Preparing The Sawmill For Towing ........................................................................ 2-31

Table of Contents HD92doc042701 i

Table of Contents Section-Page
SECTION 3 MAINTENANCE 3-1
3.1 Wear Life................................................................................................................... 3-1
3.2 Blade Guides ............................................................................................................. 3-2
3.3 Hydraulic Log Loader ............................................................................................... 3-3
3.4 Blade Housing ........................................................................................................... 3-4
3.5 Carriage Track, Wiper & Scrapers ............................................................................ 3-5
3.6 Track Rollers ............................................................................................................. 3-6
3.7 Vertical Mast Rails .................................................................................................... 3-7
3.8 Drum Switches .......................................................................................................... 3-8
3.9 Miscellaneous Lubrication ........................................................................................ 3-9
3.10 Blade Tensioner....................................................................................................... 3-10
3.11 Blade Wheel Belts ................................................................................................... 3-11
3.12 Brake Strap Adjustment .......................................................................................... 3-12
3.13 Hydraulic System .................................................................................................... 3-14
3.14 Drive Bearing .......................................................................................................... 3-16
3.15 Up/Down System..................................................................................................... 3-17
3.16 Power Feed .............................................................................................................. 3-20
3.17 Miscellaneous Maintenance .................................................................................... 3-22

SECTION 4 TROUBLESHOOTING GUIDE 4-1

4.1 Sawing Problems ....................................................................................................... 4-1
4.2 Electrical Problems.................................................................................................... 4-3
4.3 Power Feed Problems ................................................................................................ 4-5
4.4 Power Feed Circuit Troubleshooting......................................................................... 4-7
4.5 Hydraulic Problems ................................................................................................... 4-9
4.6 Engine/Motor and Drive Pulleys Alignment........................................................... 4-12
4.7 Power Feed Variable Speed Switch Test................................................................. 4-13
4.8 Power Feed Preliminary Test .................................................................................. 4-14
4.9 Power Feed Mechanical Test................................................................................... 4-15
4.10 Hydraulic Pressure Test........................................................................................... 4-16

Table of Contents HD92doc042701 ii

Table of Contents Section-Page
SECTION 5 SAWMILL ALIGNMENT 5-1
5.1 Pre-Alignment Procedures......................................................................................... 5-1
5.2 Frame Setup............................................................................................................... 5-2
5.3 Blade Installation And Alignment............................................................................. 5-3
5.4 Saw Head Slide Pad Adjustment............................................................................... 5-5
5.5 Adjusting The Lower Track Rollers.......................................................................... 5-7
5.6 Adjusting Main Bed Rails To Blade ......................................................................... 5-9
5.7 Blade Guide Arm Vertical Adjustment ................................................................... 5-11
5.8 Blade Guide Arm Horizontal Adjustment............................................................... 5-12
5.9 Aligning The Blade Guides ..................................................................................... 5-14
5.10 Blade Deflection ...................................................................................................... 5-15
5.11 Blade Guide Vertical Tilt Adjustment..................................................................... 5-16
5.12 Blade Guide Spacing ............................................................................................... 5-18
5.13 Horizontal Tilt Adjustment...................................................................................... 5-19
5.14 Horizontal Adjustment Of Side Supports................................................................ 5-20
5.15 Vertical Adjustment Of Side Supports .................................................................... 5-21
5.16 Clamp Stop Adjustment .......................................................................................... 5-22
5.17 Aligning The Pivot Bed Rails.................................................................................. 5-23
5.18 Sight Gauge Adjustment.......................................................................................... 5-25
5.19 Saw Head Tilt .......................................................................................................... 5-26
5.20 Blade Height Scale Adjustment............................................................................... 5-27

Table of Contents HD92doc042701 iii

 Safety & General Information
Blade Handling 1
SECTION 1 SAFETY & GENERAL INFORMATION
This symbol calls your attention to instructions concerning your personal safety. Be sure
to observe and follow these instructions. This symbol accompanies a signal word. The
word DANGER refers to hazards that can cause death or serious, irreversible personal
injury. The word WARNING suggests a safety hazard that can cause personal injury.
CAUTION refers to hazards that can cause damage to the equipment or property only.

Read all safety instructions before operating this equipment and observe all safety warn-
ings!

Safety instructions are listed in this section by the following operations:

Blade Handling

Sawmill Setup

Sawmill Operation

1.1 Blade Handling

WARNING! Always wear gloves and eye protection when

handling bandsaw blades. Keep all persons away from
area when coiling or carrying a blade.

1.2 Sawmill Setup

DANGER! Chock the trailer wheels to prevent movement

before unhitching it from the towing vehicle.

DANGER! Put front outrigger down before moving cutting

head from the rest position.

WARNING! Do not set up the mill on ground with more than

a 10 degree incline. If setup on an incline is necessary, dig
out areas for outrigger legs to keep mill level. Setting up the
mill on an incline could cause it to tip over!

Safety & General Information HD92doc042701 1-1

 Safety & General Information
1 Sawmill Operation
1.3 Sawmill Operation

DANGER! Never operate or tow the sawmill without all

guards and covers in place and secured.

Be sure the blade housing and pulley covers are in place

and secure. If applicable, use the safety retainer pin and
cable to fasten blade housing covers.

DANGER! Always disengage the clutch/brake mechanism

whenever the sawmill is not cutting.

DANGER! Always keep hands away from moving bandsaw

blade.

DANGER! Keep all persons a safe distance away from

work area when operating sawmill or loading and turning
logs.

DANGER! Be sure the power feed switch is in the neutral

position before turning the key switch to the ON or ACC
position. This prevents unwanted carriage movement.

DANGER! Check to be sure the saw head is resting firmly

on the rest pin and mast rail stops and that the safety chain
is secured before towing the sawmill.

WARNING! Always secure the cutting head with a 5/16”

chain with a least 1900 lbs. working load capacity before
adjusting the up/down chain. The cutting head may fall,
causing severe injury or death.

WARNING! Always secure the cutting head with a 5/16”

chain with a least 1900 lbs. working load capacity before
removing the up/down motor belt. The cutting head may
fall, causing severe injury or death.

WARNING! Always wear eye, ear, respiration, and foot pro-

tection when operating the sawmill.

WARNING! Secure all loose clothing and jewelry before

operating the sawmill.

WARNING! Always make sure log is clamped securely

before sawing.

1-2 HD92doc042701 Safety & General Information

 Safety & General Information
Sawmill Operation 1
CAUTION! Always be sure that all safety warning decals
are clean and readable. Replace all damaged warning
decals. Contact your local distributor, or call your Customer
Service Representative to order more decals.

CAUTION! Be sure the pivot end rails, turning arm, clamp,

and toe boards are out of the way before loading a log onto
the bed. Also, be sure the cutting head is moved far enough
forward so the log does not hit it.

CAUTION! Failure to fully extend the log clamp before tow-

ing can result in damage to the clamping assembly during
towing.

IMPORTANT! It is always the owner's responsibility to com-

! ply with all applicable federal, state and local laws, rules
and regulations regarding the ownership, operation and
towing of your Wood-Mizer sawmill. All Wood-Mizer mill
owners are encouraged to become thoroughly familiar with
these applicable laws and comply with them fully while
using or towing the mill.

Always properly dispose of all sawing byproducts, including

sawdust and other debris.

Safety & General Information HD92doc042701 1-3

 Safety & General Information
1 Belt Sizes
1.4 Belt Sizes

See Table 1-1. Belt sizes for the LT30HD/40HD are shown.

Description Belt Size Wood-Mizer Part #

24hp Gas Engine Drive Belt 2BX742 P10277-2
20hp Diesel Engine Drive Belt 2BX682 P12139-2
15hp Electric Motor Drive Belt 2BX702 P04857-2
Alternator Belt (G24) A33 P11542
Alternator Belt (D20/E15) A30 P11628
Blade Pulley Belts 1 P04185
B57
Power Feed Drive Belt 4L280 P04031
Up/Down Drive Belt 3L290 P04349
1
To insure proper blade tracking, use Goodyear, Dayco Super II, or
Browning belts only.
2Two belts originally supplied on machines prior to rev E3. Replace
with one common-backed belt as listed above.
TABLE 1-1

1-4 HD92doc042701 Safety & General Information

 Safety & General Information
Blade Sizes 1
1.5 Blade Sizes

See Table 1-2. Wood-Mizer TRU•SHARP™ offers three types of blades to provide effi-
cient sawing for all models of sawmills. The engine/motor size of your sawmill and the
type of wood you saw should determine which blade you choose for optimum perfor-
mance.

Gas/Diesel Recommended Blade For Sawing:

Engine Size Softwood Hardwood Frozen or Hard-to-Cut
Wood
5 hp - 14hp .042 x 7/8 x 1 1/4” .035 x 7/8 x 1 1/4” .045 x 7/8 x 1 1/4” F 1
16hp or more .045 x 7/8 x 1 1/2” .042 x 7/8 x 1 1/4” .045 x 7/8” x 1 1/4” F1
.045 x 7/8 x 1 1/2” 2
Electric Motor .045 x 7/8 x 1 1/2” .042 x 7/8 x 1 1/4” .045 x 7/8 x 1 1/4” F1
.045 x 7/8 x 1 1/2” 2
TABLE 1-2
1
TRU•SHARP™ “F” blades use a 9/29 profile (9° hook angle and 29° back angle) and are de-
signed to cut frozen and/or extremely dense, hard-to-cut wood. Standard TRU•SHARP™
blades use a 10/30 profile.
2
Customer may choose preferred blade.

See The Blade Handbook for blade hook angle, tooth height, and tooth set specifications.

Safety & General Information HD92doc042701 1-5

 Safety & General Information
1 Cutting Capacity
1.6 Cutting Capacity

See Table 1-3. The log size capacities of the LT30HD and LT40HD sawmills are listed
below.

Max. Max.
Diameter 1 Length 1
LT30HD 36" (91.5 cm) 2 16' 8" (5.1 m)
LT40HD 36" (91.5 cm) 2 21' (6.4 m)
LT30HD with Optional 12' 36" (91.5 cm) 2 28' 8" (8.7 m)
Bed Extension 3
LT40HD with Optional 36" (91.5 cm) 2 33' (10.1 m)
12' Bed Extension 3
TABLE 1-3
1
Maximum log capacity for a basic mill is 4400 lbs. (1996 Kg).
2
Maximum diameter capacity prior to revision C8 is 32"
3
Logs over 4400 lbs. must be distributed so that neither the basic mill or ex-
tension is loaded beyond the 4400 lb. maiximum weight rating. Loading
logs heavier than 4400 lbs. (1996 Kg.) on a mill equipped with bed exten-
sion requires auxilliary log handling equipment.

See Table 1-4. The production capacity of the LT30HD and LT40HD sawmills is listed
below. Productivity is based on sawing 1" lumber. The low end of the range is based on a
single operator with no support equipment. The high end of the range is based on two
operators with support equipment.

Model Production Capacity

LT30HD/40HD 24hp gas engine 2,000 - 3,400 bdft./day
LT30HD/40HD 15hp electric motor 2,000 - 3,400 bdft./day
LT30HD/40HD 20hp diesel engine 2,000 - 3,200 bdft./day

1-6 HD92doc042701 Safety & General Information

 Safety & General Information
Engine/Motor Specifications 1
1.7 Engine/Motor Specifications

See Table 1-5. The power options available for the LT30HD and LT40HD sawmills are
listed below.

Engine/Motor Manufacturer Model

Type Number
24HP Gasoline Onan P224
20HP Diesel Acme ADX740
15HP Electric Baldor Custom
TABLE 1-5

Safety & General Information HD92doc042701 1-7

 Safety & General Information
1 Overall Dimensions
1.8 Overall Dimensions

See Table 1-6. The overall dimensions of the LT30HD sawmill are listed below.

LT30HD LT30HD with Surge

Brake Trailer Pkg.
Length 19' 11" (5.3 m) 21' 9" (6.6 m)
Width 8' (2.4 m) 8' 2" (2.5 m)
Height 7' 6" (2.3 m) 7' 6" (2.3 m)
Weight 2433 lbs. (1105 Kg) 2780 lbs. (1262 Kg)
TABLE 1-6

See Table 1-7. The overall dimensions of the LT40HD sawmill are listed below.

LT40HD LT40HD with Surge Brake

Trailer Pkg.
Length 24' 4" (7.4 m) 26' 2" (8.0 m)
Width 8' (2.4 m) 8' 2" (2.5 m)
Height 7' 6" (2.3 m) 7' 6" (2.3 m)
Weight 2513 lbs. (1141 Kg) 2860 lbs. (1298 Kg)

1-8 HD92doc042701 Safety & General Information

 Safety & General Information
Components 1
1.9 Components

See Figure 1-1. The major components of the Wood-Mizer LT30HD/LT40HD are shown
below.

Engine/Drive Assembly

Water Lube

Outer Blade Guide Arm

Control Blade
Box Tensioner

Operator
Hydraulic Side Support
Seat Option Hydraulic
Log Turner
Log Clamp

Trailer Hydraulic
Hitch Log Loader

Hydraulic
Toe Board
Pivot Bed
Rail

Hydraulic
Manual Winch
Control Box

HD0001
Outrigger Leg

FIG. 1-1

Safety & General Information HD92doc042701 1-9

 Safety & General Information
1 Hydraulic Schematic
1.10 Hydraulic Schematic

FIG. 1-2 HYDRAULIC SCHEMATIC (REVISIONS E7+).

1-10 HD92doc042701 Safety & General Information

 Safety & General Information
Hydraulic Schematic 1

FIG. 1-3 HYDRAULIC SCHEMATIC (REVISIONS C7 - E6).

Safety & General Information HD92doc042701 1-11

 Safety & General Information
1 Hydraulic Components
1.11 Hydraulic Components
REVISIONS E7+
Compo- Mfg. Part No. Manufacturer Wood-Mizer Description
nent Part.#
C1 A09665 Wood-Mizer A09665 Hydraulic Cylinder, 1.5" Bore X 3.5" Stroke,
Spring Return
C2 A09665 Wood-Mizer A09665 Hydraulic Cylinder, 1.5" Bore X 3.5" Stroke,
Spring Return
C3 P12847 J-D Hydraulic P12847 1 Hydraulic Cylinder, 3" Bore X 8" Stroke (Rev.
F5+)
TQ3008 Monarch Can. P09128 2 Hydraulic Cylinder, 3" Bore X 8" Stroke (Rev.
Q0002 E7 - F4)
TQ3008 Monarch Can. P09128 2 Hydraulic Cylinder, 3" Bore X 8" Stroke (Rev.
Q0002 E7 - F4)
C5 P12845 J-D Hydraulic P12845 3 Hydraulic Cylinder, 2" Bore X 6" Stroke
C6 P12846 J-D Hydraulic P12846 4 Hydraulic Cylinder, 2.5" Bore X 6" Stroke
C7 P12847 J-D Hydraulic P12847 1 Hydraulic Cylinder, 3" Bore X 8" Stroke
P1 Monarch Hyd. N/A Hydraulic Pump, Motor Driven
SV1 A09207 Wood-Mizer A09207 Sequence Valve
SV2 A09207 Wood-Mizer A09207 Sequence Valve
V1 07129 Monarch Hyd. P12700 Valve, 5-Valve Salami
VF1 28000-502-2.5 Vonberg P11566 Valve, Hydraulic Velocity Fuse
VF2 28000-502-2.5 Vonberg P11566 Valve, Hydraulic Velocity Fuse
M 08058 5 Monarch Hyd. P09955 Motor, Hydraulic Pump
1 Welded cylinder P12847 replaces tie rod cylinder P09128 originally supplied before Rev. F5.
2 Use tie rod cylinder P09128 for Rev. C7 - F4.
3 Welded cylinder P12845 replaces tie rod cylinder P09125 originally supplied before Rev. F5.
4 Welded cylinder P12846 replaces tie rod cylinder P09127 originally supplied before Rev. F5
5 Replaces Monarch #08111 originally supplied before 8/94.

1-12 HD92doc042701 Safety & General Information

 Safety & General Information
Hydraulic Components 1
REVISIONS C7 - E6
Compo- Manufacturer Manufacturer Wood-Miz Description
nent Part No. er Part
No.
C1 A09665 Wood-Mizer A09665 Hydraulic Cylinder, 1.5" Bore X 3.5" Stroke, Spring
Return
C2 A09665 Wood-Mizer A09665 Hydraulic Cylinder, 1.5" Bore X 3.5" Stroke, Spring
Return
C3 TQ3008 Q0002 Monarch Can. P09128 Hydraulic Cylinder, 3" Bore X 8" Stroke
C4 TQ3008 Q0002 Monarch Can. P09128 Hydraulic Cylinder, 3" Bore X 8" Stroke
C5 P12845 J-D Hydraulic 1 Hydraulic Cylinder, 2" Bore X 6" Stroke
P12845
C6 P12846 J-D Hydraulic P12846 2 Hydraulic Cylinder, 2.5" Bore X 6" Stroke
C7 P12847 J-D Hydraulic P12847 3 Hydraulic Cylinder, 3" Bore X 8" Stroke
CV1 A11687 Wood-Mizer A11687 Check Valve
CV2 A11687 Wood-Mizer A11687 Check Valve
P1 O2414 Monarch Hyd. N/A Hydraulic Pump, Motor Driven
SV1 A09207 Wood-Mizer A09207 Sequence Valve
SV2 A09207 Wood-Mizer A09207 Sequence Valve
V1 00647 Monarch Hyd. P11581 Valve, 4-way Manually Operated (Integral Part Of
P/N P10371)
V2 00524 Monarch Hyd. P10143 Valve, 4-way Manually Operated (Integral Part Of
P/N P10371)
V3 00524 Monarch Hyd. P10143 Valve, 4-way Manually Operated (Integral Part Of
P/N P10371)
V4 00524 Monarch Hyd. P10143 Valve, 4-way Manually Operated (Integral Part Of
P/N P10371)
V5 A09680 Wood-Mizer A09680 Dump Valve, Manually Operated
VF1 28000-502-2.5 Vonberg P11566 Valve, Hydraulic Velocity Fuse
VF2 28000-502-2.5 Vonberg P11566 Valve, Hydraulic Velocity Fuse
M 08058 4 Monarch Hyd. P09955 Motor, Hydraulic Pump
1
Welded cylinder P12845 replaces tie rod cylinder P09125 originally supplied.
2
Welded cylinder P12846 replaces tie rod cylinder P09127 originally supplied.
3
Welded cylinder P12847 replaces tie rod cylinder P09128 originally supplied.
4
Replaces Monarch #08111 originally supplied.

Safety & General Information HD92doc042701 1-13

 Safety & General Information
1 Hydraulic Hoses
1.12 Hydraulic Hoses

REVISIONS F5+
Compo- Color Application Wood-Mize Description
nent Code r Part No.
H3 Plain Log Turner Cylinder Base P12533 Hose, 1/4" X 14" Hydraulic
W/Fittings
H4 Orange Log Turner Cylinder Top P12535 Hose, 1/4" X 27" Hydraulic
W/Fittings
H5 Yellow Front Toe Board (LT30HD) P12539 Hose, 1/4" X 84" Hydraulic
W/Fittings
Yellow Front Toe Board (LT40HD) P12541 Hose, 1/4" X 106" Hydraulic
W/Fittings
H6 Pink Side Support Cylinder Base P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Pink Side Support Cylinder Base P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H7 White Clamp Cylinder Top (LT30HD) P12544 Hose, 1/4" X 142" Hydraulic
W/Fittings
White Clamp Cylinder Top (LT40HD) P12548 Hose, 1/4" X 164" Hydraulic
W/Fittings
H8 Dark Clamp Cylinder Base (LT30HD) P12543 Hose, 1/4" X 135" Hydraulic
Orange W/Fittings
Dark Clamp Cylinder Base (LT40HD) P12546 Hose, 1/4" X 157" Hydraulic
Orange W/Fittings
H9 Plain Side Support Cylinder Top P12547 Hose, 1/4" X 159" Hydraulic
(LT30HD) W/Fittings
Plain Side Support Cylinder Top P12550 Hose, 1/4" X 186" Hydraulic
(LT40HD) W/Fittings
H10 Purple Rear Toe Board (LT30HD) P12549 Hose, 1/4" X 173" Hydraulic
W/Fittings
Purple Rear Toe Board (LT40HD) P12551 Hose, 1/4" X 197" Hydraulic
W/Fittings
H11 Green Loading Arm Branch Top P12537 Hose, 1/4" X 50" Hydraulic
W/Fittings
H12 Green Loading Arm Branch Top P12537 Hose, 1/4" X 50" Hydraulic
W/Fittings
H13 Yellow Loading Arm Branch Base P12538 Hose, 1/4" X 55" Hydraulic
W/Fittings
H14 Yellow Loading Arm Branch Base P12538 Hose, 1/4" X 55" Hydraulic
W/Fittings

1-14 HD92doc042701 Safety & General Information

 Safety & General Information
Hydraulic Hoses 1
REVISIONS F5+
H15 Blue Loading Arm Cylinder Top P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Blue Loading Arm Cylinder Top P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H16 Red Loading Arm Cylinder Bottom P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Red Loading Arm Cylinder Bottom P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H17 None Hydraulic Pump To Valve P12705 Hose, 3/8" X 22" Hydraulic
W/Fittings

Safety & General Information HD92doc042701 1-15

 Safety & General Information
1 Hydraulic Hoses
REVISIONS C7 - F4
Compo- Color Application Wood-Mize Description
nent Code r Part No.
H1 Brown Toe Board Return (Rev. C7- E6 P12534 Hose, 1/4" X 22" Hydraulic
Only) W/Fittings
H2 Brown Toe Board Return (Rev. C7- E6 P12534 Hose, 1/4" X 22" Hydraulic
Only) W/Fittings
H3 Gold Log Turner Cylinder Base P12533 Hose, 1/4" X 14" Hydraulic
W/Fittings
H4 Grey Log Turner Cylinder Top P12535 Hose, 1/4" X 27" Hydraulic
W/Fittings
H5 Bright Yel- Front Toe Board (LT30HD) P12539 Hose, 1/4" X 84" Hydraulic
low W/Fittings
Bright Yel- Front Toe Board (LT40HD) P12541 Hose, 1/4" X 106" Hydraulic
low W/Fittings
H6 Silver Side Support Cylinder Base P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Silver Side Support Cylinder Base P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H7 White Clamp Cylinder Top (LT30HD) P12544 Hose, 1/4" X 142" Hydraulic
W/Fittings
White Clamp Cylinder Top (LT40HD) P12548 Hose, 1/4" X 164" Hydraulic
W/Fittings
H8 Orange Clamp Cylinder Base (LT30HD) P12543 Hose, 1/4" X 135" Hydraulic
W/Fittings
Orange Clamp Cylinder Base (LT40HD) P12546 Hose, 1/4" X 157" Hydraulic
W/Fittings
H9 Plain Side Support Cylinder Top P12547 Hose, 1/4" X 159" Hydraulic
(LT30HD) W/Fittings
Plain Side Support Cylinder Top P12550 Hose, 1/4" X 186" Hydraulic
(LT40HD) W/Fittings
H10 Black Rear Toe Board (LT30HD) P12549 Hose, 1/4" X 173" Hydraulic
W/Fittings
Black Rear Toe Board (LT40HD) P12551 Hose, 1/4" X 208" Hydraulic
W/Fittings
H11 Dark Loading Arm Branch Top P12537 Hose, 1/4" X 52" Hydraulic
Green W/Fittings
H12 Dark Loading Arm Branch Top P12537 Hose, 1/4" X 52" Hydraulic
Green W/Fittings
H13 Dark Yel- Loading Arm Branch Base P12538 Hose, 1/4" X 55" Hydraulic
low W/Fittings
H14 Dark Yel- Loading Arm Branch Base P12538 Hose, 1/4" X 55" Hydraulic
low W/Fittings

1-16 HD92doc042701 Safety & General Information

 Safety & General Information
Hydraulic Hoses 1
REVISIONS C7 - F4
H15 Blue Loading Arm Cylinder Top P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Blue Loading Arm Cylinder Top P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H16 Red Loading Arm Cylinder Bottom P12545 Hose, 1/4" X 151" Hydraulic
(LT30HD) W/Fittings
Red Loading Arm Cylinder Bottom P12549 Hose, 1/4" X 173" Hydraulic
(LT40HD) W/Fittings
H17 None Hydraulic Pump To Valve (Rev. P12705 Hose, 3/8" X 22" Hydraulic
E7+Only) W/Fittings

Safety & General Information HD92doc042701 1-17

 Setup & Operation
Stationary Sawmill Setup 2
SECTION 2 SETUP & OPERATION

2.1 Stationary Sawmill Setup

See Figure 2-1. Set up the mill on firm footing. Level by eye. Fasten the mill to the floor or
platform, or tie down to footing to stop any creep after prolonged use.

NOTE: Make sure the unit is level before securing. It IS possible to twist the mill frame by
jacking one foot higher than the others.

DANGER! Do not operate a stationary sawmill without the

feet securely fastened to the floor. If the feet are not
securely fastened, loading and turning large logs could
cause the sawmill to tip over.

FIG. 2-1

*NOTE Rear leg standard on LT40/LT40HD after 3/92. Rear leg or outrigger may be retrofitted to previous
models.

Setup & Operation HD92doc042701 2-1

 Setup & Operation
2 Portable Sawmill Setup
2.2 Portable Sawmill Setup

WARNING! If the sawmill is to be set up on inclines of more

than 10 degrees, put blocks under one side of the mill, or
dig holes to prevent the mill from tipping over.

DANGER! Chock the trailer wheels to prevent movement

before unhitching it from the towing vehicle.

1. Unhitch the mill from the vehicle.

See Figure 2-2.

FIG. 2-2

2. Lower and set the front three outriggers. Lift the weight from the locking pin using the jack
handle. Pull the locking pin to release the outrigger and lower the outrigger as necessary.
Secure with the locking pin.

DANGER! Put front outrigger down before moving cutting

head from the rest position.

For Fine Adjust Outriggers (FAOs), lower the outrigger as close to the ground as possible,
then secure in place with the locking pin. Adjust the outrigger base so that it contacts the
ground. To adjust, use the provided wrench to turn the height adjustment nut. Turn clock-
wise to lower. Turn counterclockwise to raise. Maximum adjustment available is 1 1/2”
(3.8 cm).

CAUTION! Do not adjust the FAO outrigger base height

while there is weight on the FAO. Damage to the FAO may
result.

2-2 HD92doc042701 Setup & Operation

 Setup & Operation
Portable Sawmill Setup 2
Provided
Adjustment Wrench
Height Adjustment Nut

Existing
Outrigger Guide
Locking Pin

FAO Base
SM0213

FIG. 2-2. BASE HEIGHT ADJUSTMENT (FOR FINE ADJUST OUTRIGGER ONLY).

3. Unhook the carriage safety chain.

4. Start the engine to enable the battery-operated accessories (See Section 2.7). Use the
up/down switch on the control panel to raise the cutting head from the carriage rest pin.
Remove the locking pin and swing the rest pin down below bed level.

CAUTION! Always make sure the engine is running before

operating the sawmill controls. Operating the controls with-
out the engine running will result in power drainage from
the battery.

5. Use the carriage fwd/rev switch (left side of control box) to move the cutting head toward
the front end of the mill. The hydraulic control levers become operational when the con-
tacts at the bottom of the carriage touch the power strip on the frame tube. The hydraulic
control levers will only work when the cutting head is close enough to the front end of the
mill to touch the power strip.

Lower and set the remaining rear outriggers.

Setup & Operation HD92doc042701 2-3

 Setup & Operation
2 Portable Sawmill Setup
6. Level the sawmill by adjusting the outriggers to raise or lower each end of the sawmill.
Adjust all outriggers evenly to avoid twisting the mill frame by jacking one outrigger higher
than the others.

For FAO(s), fine tune the outrigger base height as necessary. Move the cutting head to
the opposite end of the mill from the outrigger. Raise the entire outrigger (to remove the
sawmill weight from it) and adjust the outrigger base as necessary. Lower the entire out-
rigger and use the locking pin to secure in position.

CAUTION! Do not adjust the FAO outrigger base height

while there is weight on the FAO. Damage to the FAO may
result.

7. Remove the fenders by lifting them out of the slots.

CAUTION! To prevent fender damage, remove fenders

before operating sawmill or loading logs.

8. Raise the two side supports that will prevent a log from falling off the side of the mill when
loaded.

See Figure 2-3.

Pivot End Rail

Side Support
Bed Rail
Stop Block

SM0130

FIG. 2-3

2-4 HD92doc042701 Setup & Operation

 Setup & Operation
Preparing The Sawmill For Operation 2
2.3 Preparing The Sawmill For Operation

1. TUV Trailers only:

See Figure 2-4. Disassemble the perimeter fence. Remove the six locking pins and two
hold-down nuts. Unplug the tail light board from the auxiliary adapter. Remove all four
sections of the perimeter fence.

FIG. 2-4

Adjust the jockey wheel down by turning the crank clockwise until the wheel is planted
firmly on the ground. Set the brake by pushing the lever away from the hitch coupler. See
Trailer Option Manual for TUV trailer hitch operation.

Setup & Operation HD92doc042701 2-5

 Setup & Operation
2 Replacing The Blade
2.4 Replacing The Blade

WARNING! Always wear gloves and eye protection when-

ever handling bandsaw blades. Changing blades is safest
when done by one person! Keep all other persons away
from work area when changing blades. Do not change the
blade with the engine running.

See Figure 2-5. Remove the blade housing cover(s) that are over the drive wheels. Turn
the tension handle to release the blade tension until the wheel is pulled in and the blade is
lying loose in the blade housing. Lift the blade out of the blade housing.

When installing a blade, make sure the teeth are pointing the correct direction. The teeth
should be pointing toward the operator side of the mill when you are looking at the blade
below the blade guides. Install the blade so it is lying around the wheels.

Position 1 1/4” wide blades on the wheels so the gullet is 1/8" (3.0 mm) out from the edge
of the wheel. Position 1 1/2” wide blades on the wheels so the gullet is 3/16” (4.5 mm) out
from the edge of the wheel.

Close the middle blade housing cover.

Next, turn the tension handle until the blade is tensioned correctly.

2-6 HD92doc042701 Setup & Operation

 Setup & Operation
Tensioning The Blade 2
2.5 Tensioning The Blade

See Figure 2-5. Tension the blade by turning the hydraulic tensioning handle clockwise
until the tension gauge indicates the recommended tension.

Blade Tensioner
Gauge
Blade Tensioner
Handle

Cant Control
Handle

SM0043

FIG. 2-5

See Table 2-1. The recommended tensions for different blades is shown below.

Blade Type Acceptable Ideal Ten-

Range sion
.035" x 7/8" x 1 1800 - 2100 2000 psi
1/4" psi
.042" x 7/8" x 1 2100 - 2400 2300 psi
1/4" psi
.045" x 7/8" x 1 2100 - 2400 2300 psi
1/2" psi
TABLE 2-1

The tension gauge should be checked occasionally when adjusting the cant control or
while cutting. Ambient temperature changes will cause tension to change. Adjust the ten-
sion handle as necessary to maintain the recommended tension level.

CAUTION! The blade tension should be released when the

mill is not in use. Changes in temperature could cause
increased pressure in the tensioner and loss of fluid from
the gauge.

Setup & Operation HD92doc042701 2-7

 Setup & Operation
2 Tracking The Blade
2.6 Tracking The Blade

Make sure the middle blade housing cover is closed and all persons are clear of the open
side of the saw head.

Start the engine (or motor). Pull lightly on the clutch handle, rotating the blade until the
blade positions itself on the wheels.

See Figure 2-6. Position 1 1/4” wide blades so the gullet is 1/8" (3.0 mm) out from the
edge of the blade wheel (±1/32 [.75 mm]). Position 1 1/2” blades so the gullet is 3/16” (4.5
mm) out from the edge of the blade wheel (±1/32 [.75 mm]).

1/8" (3.0 m)
± 1/32" (0.75 mm)

1 1/4"
Blade

3/16" (4.5 mm)

± 1/32" (0.75 mm)

1 1/2"
Blade
SM0044C

FIG. 2-6

To adjust where the blade travels on the blade wheels, use the cant control handle shown
in Figure 2-5.

If the blade is too far out, back the blade onto the wheel by turning the cant control coun-
terclockwise. If the blade is too far in, turn the cant control clockwise until the gullet of the
blade is is the correct distance from the front edge of the wheel.

2-8 HD92doc042701 Setup & Operation

 Setup & Operation
Tracking The Blade 2
Retension the blade to the recommended tension to compensate for any adjustments you
have made in the cant control. Replace the covers.

DANGER! Never operate the sawmill without all guards

and covers in place and secured.

Be sure the blade housing and pulley covers are in place and secure. If applicable, use
the safety retainer pin and cable to fasten blade housing covers.

IMPORTANT! After aligning the blade on the wheels,

! always double-check the blade guide spacing and location.
See Section 5 for more information.

Setup & Operation HD92doc042701 2-9

 Setup & Operation
2 Starting The Engine (or Motor)
2.7 Starting The Engine (or Motor)

See the appropriate manual supplied with your specific engine/motor configuration for
starting and operating instructions.

DANGER! Read the entire manual before operating your

Wood-Mizer sawmill.

DANGER! Never operate the sawmill without all guards

and covers in place and secured.

Be sure the blade housing and pulley covers are in place and secure before starting the
sawmill. If applicable, use the safety retainer pin and cable to fasten blade housing cov-
ers.

DANGER! Do not start the engine or motor when the

clutch/brake lever is in the engaged (down) position.
Always be sure the blade is disengaged and all persons are
away from the blade before starting the engine.

DANGER! Make sure the carriage fwd/rev switch is in the

neutral position before turning the key switch to the ON or
ACC position. This will prevent unintended carriage move-
ment.

WARNING! Always wear eye, ear, and respiration protec-

tion when operating this equipment.

2-10 HD92doc042701 Setup & Operation

 Setup & Operation
Hydraulic Control Operation 2
2.8 Hydraulic Control Operation

Revisions E7+

See Figure 2-7. Use the five control levers to do the following steps. This gets the mill
ready to load a log.

Loader
Rear Turner
Toe Board
Front
Toe Board

Clamp

HD0027

FIG. 2-7

Setup & Operation HD92doc042701 2-11

 Setup & Operation
2 Hydraulic Control Operation
Revisions C7 - E6

See Figure 2-8. Use the four control levers to do the following steps. This gets the mill
ready to load a log.

FIG. 2-8

CAUTION! Never operate the hydraulic controls without the

engine running. Power drainage from the battery will result.
Holding the hydraulic switches halfway up or down also will
cause excessive drainage from the battery.

DANGER! Keep all persons a safe distance away while

operating the sawmill. Leave loading arm halfway up while
log is on sawmill bed.

1. Lower the clamp lever to move the log clamp toward the loading side of the mill. Be sure
the clamp is in the down position so it will not get in the way of logs being loaded onto the
bed.

See Figure 2-9. The two-stage clamp can be raised or lowered by lowering the clamp
lever and moving the clamp all the way out. The clamp will engage the flip arm and flip the
clamp in either the up or down position.

A 3" clamp extension is located at the end of the clamp assembly or inside the battery box
of all hydraulic sawmills. The extension is used for small logs or boards needing a shorter

2-12 HD92doc042701 Setup & Operation

 Setup & Operation
Hydraulic Control Operation 2
clamp. See Section 2.10

FIG. 2-9

2. Raise the log loader lever to extend the legs of the log loader out as far as they will go.

3. The chain securing the log loading arm to the log turner arm will be tight. Raise the log
turner lever to raise the turner arm until there is slack in the chain.

4. Unchain the loading arm from the turner arm.

5. Lower the turner lever to completely lower the turner arm. Notice that after the turner arm
is all the way down, the side support braces will begin to lower. Release the turner lever
after the turner arm is lowered, but before the side supports begin to lower. This stops the
log being loaded from damaging the turner and/or falling off the side of the sawmill.

6. When raising the turner lever, the side supports rise first. After reaching a fully vertical
position, the turner arm will engage and start to rise.

7. Manually lower the log loader so the legs rest on the ground.

CAUTION! Be careful when lowering the log loader. Do not

drop the loader onto the ground or perform any action
which might break the velocity fuse valves on the loader
cylinders. These valves control hydraulic flow and are nec-
essary to prevent the loading arm from collasping during
use.

Setup & Operation HD92doc042701 2-13

 Setup & Operation
2 Hydraulic Control Operation
8. Lower the loader lever to lower the loading arm as far as it will go. Logs must be rolled
onto the loading arm one at a time for loading onto the bed of the mill.

9. The front and rear toe boards should be below bed level. Once a tapered log has been
loaded, the front or rear end of the log may be lifted to parallel the heart of the log to the
path of the blade.

Revisions E7+

The front toe board is raised by lifting the front toe board lever up. The rear toe board is
raised by lifting the rear toe board lever up. Once a flat has been made and the log is
ready to be turned, push the appropriate toe board lever down to lower either toe board
until it falls below the level of the bed.

Revisions C7 - E6

The front toe board is raised by lifting the toe board lever up. The rear toe board is raised
by pushing the lever down. Once a flat has been made and the log is ready to be turned,
the toe board release valve should be turned clockwise to lower either toe board until it
falls below the level of the bed.

CAUTION! Always be sure the toe boards are lowered

below bed level before turning or loading logs onto the bed.
Loading and turning logs or cants can cause permanent
damage to the toe boards if they are left in the up position.

2-14 HD92doc042701 Setup & Operation

 Setup & Operation
Loading, Turning, And Clamping Logs 2
2.9 Loading, Turning, And Clamping Logs

CAUTION! Be sure the pivot end rails (if applicable), turn-

ing arm, clamp, and toe boards are out of the way before
loading a log onto the bed. Be sure logs are positioned on
the bed so that they will not damage the manual winch
when loaded. Also, be sure the cutting head is moved far
enough forward so the log does not hit it.

To Load Logs

1. Move a log up to the loading arm. Use the manual winch, cant hooks, or loading equip-
ment to move the logs to the foot of the loading arms.

2. Roll the log onto the loader so that it is approximately centered with the sawmill bed. The
log turner will operate much easier if the log is centered on the sawmill bed.

3. Raise the loader lever to raise the log onto the sawmill bed. Simply let the loader rise until
the log rolls onto the mill bed.

4. Lower the loading arm. Leave the loading arm about halfway up while squaring the log.
This will stop the log from rolling off the side of the mill.

NOTE: Logs also may be loaded onto the mill with a tractor or other equipment specifi-
cally designed for that purpose.

5. Flip the clamp into the up position by lowering the clamp lever until the clamp contacts the
flip arm.

Setup & Operation HD92doc042701 2-15

 Setup & Operation
2 Loading, Turning, And Clamping Logs
To Turn Logs

1. Raise the turner lever to engage the log turner arm. Let the arm rise until it touches the
log and starts to turn it.

2. Spin the log against the side supports until it is turned the way you want it for the first cut.
If you want to turn the log more, do the following steps.

3. Engage the clamp by raising the clamp lever.

4. Clamp the log against the side supports.

5. Lower the turner lever to lower the turner arm below the log.

6. Raise the turner arm to get a new bite on the log.

7. Disengage the clamp.

8. The log can be turned now. Repeat steps 4 through 7 until the log is turned as desired.

To Clamp Logs

See Figure 2-10.

1. Raise the clamp lever and clamp the log against the side supports.

2. Lower the turner lever until the turner arm falls below the bed.

3. When the turner arm is lowered all the way, the side supports will begin to lower. Back the
clamp off slightly, and let the side supports come down until they are positioned below the
level of your first few cuts.

2-16 HD92doc042701 Setup & Operation

 Setup & Operation
Loading, Turning, And Clamping Logs 2
To Level A Tapered Log

Use the toe board lever(s) to raise either end of a tapered log, if desired.

Revisions E7+

Raise the appropriate lever to raise the front or rear toe board until the heart of the log
measures the same distance from the bed rails at each end of the log.

Revisions C7 - E6

Raise the lever to raise the front toe board or lower the lever to raise the rear toe board
until the heart of the log measures the same distance from the bed rails at each end of the
log.

Setup & Operation HD92doc042701 2-17

 Setup & Operation
2 Clamp Extension
2.10 Clamp Extension

The clamp extension stored in the battery box or at the end of the clamp tube can be used
for clamping small cants or logs. The clamp extension is used with the hydraulic clamp in
its down position.

Clamp extensions made after 6/92 include a retaining pin which allows the clamp to be
stored on the clamp tube end plate.

See Figure 2-11. Remove the retaining pin and clamp extension from its storage position
at the end of the clamp assembly. Replace the pin in the storage hole.

Remove retaining pin

and clamp extension
from storage position

Slide clamp extension

over lip of
hydraulic clamp

HD0018

Return retaining
pin to storage
location

FIG. 2-11

The clamp should be removed from the clamp and returned to its storage position before
towing the mill.

2-18 HD92doc042701 Setup & Operation

 Setup & Operation
Up/Down Operation 2
2.11 Up/Down Operation

1. Install a blade, if needed, and check for correct blade tension. See Section 2.5.

2. Set the cutting head to the desired height. (The blade height sight gauge and scale show
the height of the blade above the bed rails.)

See Figure 2-12. The up/down switch is located on the far right side of the control panel.
Push the switch up to raise the cutting head; push the switch down to lower the cutting
head. Hold the switch in position until the cutting head reaches the desired height, then
release.

FIG. 2-12

The up/down switch is designed to return to the neutral or "off" position when released. If
the switch remains engaged, manually move the switch to the neutral or "off" position.
Repair the up/down drum switch. See Section 4.2 Electrical Problems.

WARNING! Failure to move the up/down switch to the neu-

tral or "off" position when released will result in failure to
stop saw head movement.

CAUTION! DO NOT try to force the carriage above the 35"

(88 cm) mark or below the 1" (2.54 cm) mark. Damage to
the chain may result.

Setup & Operation HD92doc042701 2-19

 Setup & Operation
2 Blade Guide Arm Operation
2.12 Blade Guide Arm Operation

1. Look down the length of the log to see its maximum width. The outer blade guide should
be adjusted to clear the widest section of the log by less than 1" (25.4 mm).

2. Use the blade guide toggle switch on the control panel to adjust the outer blade guide as
necessary. Push the switch to the left to move the arm in. Push the switch to the right to
move the arm out.

See Figure 2-13.

FIG. 2-13

3. Use the blade guide toggle switch to readjust the outer blade guide as you are cutting in
order to keep the guide within 1" (2.5 cm) of the log. Be sure to adjust the arm back out
before returning the carriage.

2-20 HD92doc042701 Setup & Operation

 Setup & Operation
Clutch/Brake Operation 2
2.13 Clutch/Brake Operation

1. Clear any loose objects from the area of the blade, motor, and drive belt.

2. Make sure the clamp and side supports are adjusted below the level of your first few cuts.

3. Start the engine or motor as instructed in the engine manual.

DANGER! Never operate the sawmill without all guards

and covers in place and secured.

Be sure the blade housing and pulley covers are in place

and secure. If applicable, use the safety retainer pin and
cable to fasten blade housing covers.

See Figure 2-14. The clutch/brake lever is located next to the engine.

FIG. 2-14

4. To engage the blade, pull the lever down until it locks in the down position. This engages
the drive mechanism, releases the blade brake, and increases the engine speed to full
throttle.

To disengage the blade, raise the clutch/brake lever to the up position. This disengages
the drive belt, engages the blade brake, and returns the engine to idle.

CAUTION! Failing to stop the blade can cause it to be

pulled off by a wood sliver (while traveling in reverse). This
will ruin the blade. Stopping the blade when returning the
carriage also increases the life of the blade.

Setup & Operation HD92doc042701 2-21

 Setup & Operation
2 Power Feed Operation
2.14 Power Feed Operation

See Figure 2-15. The power feed system moves the carriage forward and backward by
using two switches on the control panel.

FIG. 2-15

Carriage Feed Rate

The carriage feed rate switch controls the speed at which the carriage travels forward.
Turn the switch clockwise to increase speed. Turn it counterclockwise to reduce speed.

Carriage Forward and Reverse

The carriage fwd/rev (forward/reverse) switch controls the direction in which the carriage
travels. Turn the fwd/rev switch upward to the CARRIAGE FWD position to move the car-
riage forward. Turn the switch down to the CARRIAGE REV position to move the carriage
backward.

The middle position (as shown) is the neutral position. The power feed switch is designed
to return to the neutral or "off" position when released from operating in the reverse posi-
tion. If the switch remains engaged, manually move the switch to the neutral or "off" posi-
tion. Repair up/down drum switch. See Section 4.2 Electrical Problems.

DANGER! Failure to move the up/down switch to the neu-

tral or "off" position when released will result in failure to
stop saw head carriage movement.

2-22 HD92doc042701 Setup & Operation

 Setup & Operation
Power Feed Operation 2
DANGER! Make sure the carriage fwd/rev switch is in the
neutral position before turning the key switch to the on or
ACC position. This prevents unintended carriage move-
ment.

Using The Power Feed

HINT: To get a straight cut in the first part of the board, feed the blade into the log at a
slow speed. This stops the blade from flexing and dipping up or down. Turn the carriage
feed rate switch to a slow speed until the whole width of the blade has entered the cut.
Then use the carriage feed rate switch to increase the feed rate as desired. Maximum
feed rate varies with width and hardness of the wood. Over-feeding results in engine and
blade wear, and also produces a wavy cut.

1. Stop the carriage at the end of the cut by turning the carriage feed rate switch counter-
clockwise until the carriage stops moving.

2. Throw the clutch/brake lever UP to stop the blade and drop the engine to idle. Remove
the board from the top of the log.

CAUTION! Be sure to stop the blade when returning the

carriage. This will not only prevent the blade from being
pulled off and ruined by a wood sliver, but also will increase
the life of the blade.

3. Return the carriage to the front of the mill by turning the carriage fwd/rev switch DOWN.
The power feed motor will bypass the carriage feed rate switch and the carriage will auto-
matically return at the fastest speed available. Always disengage the blade before
returning the carriage for the next cut.

4. Make sure that the blade does not catch on the end of the log. Raise the carriage slightly
to make sure the blade clears the log when returned. HINT: Try to stop the blade while the
heel of the blade is still on the log. Then bring the carriage back without adjusting the
blade up. This lets you keep the blade at the current height setting so you can make the
next blade height adjustment more quickly.

DANGER! Always keep away from the trailer axle to avoid

being caught between the axle and moving saw carriage.

Setup & Operation HD92doc042701 2-23

 Setup & Operation
2 Cutting The Log
2.15 Cutting The Log

The following steps guide you through normal operation of the Wood-Mizer sawmill.

1. Once the log is placed where you want it and clamped firmly turn the key switch to the
ACC position.

2. Determine where to make your first cut. The sight gauge and the blade height scale will
help you to do this (See Section 2.17 and See Section 2.18). Set the blade to the desired
height with the up/down switch. Make sure that the blade will clear all side supports and
the clamp. Adjust the outer blade guide to clear the widest section of the log by moving
the blade guide toggle switch.

3. Make sure all covers and guards are in place. Start the engine. Engage the clutch/brake
lever to start the blade spinning.

4. Start the water lube if necessary to prevent sap buildup on the blade. See Section 2.19.

5. Feed the blade into the log slowly (See Section 2.14). Once the blade completely enters
the log, increase the feed rate as desired. Always try to cut at the fastest speed you can
while keeping an accurate cut. Cutting too slowly will waste blade life and lower produc-
tion!

6. As you get to the end of the log, slow down the feed rate. When the teeth exit the end of
the log, turn the feed rate all the way down and disengage the clutch/brake lever. Remove
the slab that you have just cut from the log.

7. Use the carriage fwd/rev switch to return the carriage to the front of the mill. Always dis-
engage the blade before returning the carriage for the next cut.

8. Repeat until the first side of the log is cut as desired. Set aside the usable flitches (boards
with bark on one or both sides). You can edge them on the mill later.

9. Lower the toe boards, if they were used. Use the hydraulic levers to release the clamp
and engage the log turner. Turn the log 90 or 180 degrees. Make sure the flat on the log is
placed flat against side supports if turned 90 degrees. Make sure it is placed on bed rails
if turned 180 degrees. If the log was turned 90 degrees and you are using toe boards to
compensate for taper in the log, raise the front or rear toe board again on the second side
of the log until the heart is parallel with the bed.

10. Repeat the steps used to cut the first side of the log until the log is square. Cut boards
from the remaining cant by adjusting the blade height for the thickness of boards that you
want.

Example: Remember that the blade cuts a 1/16 - 1/8" (1.6-3.2 mm) wide kerf. If you want
1" (25.4 mm) thick boards, lower the carriage 1 1/16 - 1 1/8" (27-28.6 mm) for each board.

2-24 HD92doc042701 Setup & Operation

 Setup & Operation
Edging 2
2.16 Edging

The following steps guide you through edging boards on the Wood-Mizer sawmill.

1. Raise the side supports to 1/2 the height of the flitches, or the boards that need to be
edged.

2. Stack the flitches on edge against the side supports.

3. Clamp the flitches against the side supports halfway up the flitch height. (Wider flitches
should be placed to the clamp side. When they are edged, flip them over to edge the sec-
ond side without disturbing the other flitches or without having to pull them from the mid-
dle of the stack).

4. Adjust the blade height to edge a few of the widest boards.

5. Loosen the clamp and turn the edged boards over to edge the other side.

6. Repeat steps 2-4.

7. Loosen the clamp and remove the boards that have good clean edges on both sides.
Clamp the remaining flitches and repeat steps 2-5.

Setup & Operation HD92doc042701 2-25

 Setup & Operation
2 Blade Height Sight Gauge
2.17 Blade Height Sight Gauge

See Figure 2-16. The sight gauge is provided on the cutting head carriage to help you
decide where to make the first cuts on a log.

SM0047 Sight gauge eye-level

with bottom of blade
FIG. 2-16

Move the carriage forward until the blade is close to the end of the log.

Position yourself so that your eyes are level with the bottom of the sight gauge spring.
With one eye closed, move your head up or down until the bottom of the sight gauge is
lined up with the bottom of the blade.

Sight down the length of the log. You should be able to see where the blade will pass
through the log down its entire length. Raise or lower the cutting head until you get the
blade height you want.

HINT: After judging by eye where you want to make your first slab cut, check the scale.
Move the up/down crank to fine-tune the blade height to an even measurement on the
blade height scale.

Example: Adjust the blade up to 15" rather than cut at 14 13/16". This will make adjust-
ments for the next cuts easier to figure on the scale.

2-26 HD92doc042701 Setup & Operation

 Setup & Operation
Blade Height Scale 2
2.18 Blade Height Scale

See Figure 2-17. The blade height scale is attached to the carriage head frame. It
includes:

a blade height indicator

an inch scale

a quarter scale

Blade Height
6 Indicator
Quarter
Scale 5 14
8 4

15
4
6 5

16
4
8
5
17 Inch
6 Scale
4
18
5

4
8
6

3H0007

FIG. 2-17

Rev C7-D2: The indicator is attached to the frame and moves up and down with the car-
riage head. A retrofit is available so that the indicator remains at eye level and the scales
move up and down.

Rev D3+: The scales are attached to the frame and move up and down with the carriage
head. The blade indicator, used to read the inch and quarter scales, remains stationary.

Setup & Operation HD92doc042701 2-27

 Setup & Operation
2 Blade Height Scale
The Inch Scale

The horizontal red line on the blade height indicator shows how many inches the bottom
of the blade is above the bed of the mill. If you know the height of your blade at each cut,
you can determine the thickness of lumber you are sawing.

Example: You want to cut 1" (25 mm) random width boards from a log. Use the sight
gauge to position the blade for the first cut. Move the carriage to an even measurement
on the inch scale. Make a trim cut. Return the carriage for the second cut and lower it 1
1/8" (29 mm) below the original measurement. (The extra 1/8" (3 mm) allows for saw kerf
and shrinkage of the lumber.)

Rev. F2+: The scale is shaded. White identifies areas where the blade could encounter a
side support or the clamp. Yellow identifies areas where the blade could encounter a side
support only.

2-28 HD92doc042701 Setup & Operation

 Setup & Operation
Blade Height Scale 2
The Quarter Scale

See Table 2-2. Two quarter scales are provided with four sets of marks. Each set repre-
sents a specific lumber thickness. Saw kerf and shrinkage allowance are included, but
actual board thickness will vary slightly depending on blade thickness and tooth set.

To choose which scale to use, determine what finished thickness you want to end up with.
The Grade Hardwood Quarter Scale provides thicker finished boards usually required by
commercial buyers. The Standard Quarter Scale allows for kerf and shrinkage of finished
boards suitable for most custom applications. Always check with your customer before
you saw to determine what actual finished thickness is required.

Standard Quarter Scale

Scale Actual Board Thickness
4/4 1" (25 mm)
5/4 1 1/4" (32 mm)
6/4 1 5/8" (41 mm)
8/4 2 1/8" (54 mm)

Grade Hardwood Quarter Scale1

Scale Actual Board Thickness
4/4 1 1/8" (29 mm)
5/4 1 3/8" (35 mm)
6/4 1 5/8" (41 mm)
8/4 2 1/8" (54 mm)
TABLE 2-2
1 Supplied after 5/95.

To use the quarter scale, look at the blade height indicator. Line up the horizontal red line
on the indicator with the nearest mark on the scale you want to use. Make a trim cut.
When you return the carriage for a second cut, lower the carriage to the next mark on the
scale. This mark shows where the blade should be positioned to cut a certain thickness of
lumber, without having to measure on the inch scale.

Example: You want to cut 1" (25 mm) (4/4) random width boards from a log. Use the sight
gauge to position the blade for the first cut. Adjust the quarter scale so a 4/4 mark is
aligned with the red line on the indicator. Make a trim cut. Return the carriage for the sec-
ond cut. Now, instead of having to measure down 1 1/8" (29 mm) on the inch scale, you
can simply lower the blade so the indicator is aligned with the next 4/4 mark on the quar-
ter scale. Turn the log 90 degrees and repeat.

Setup & Operation HD92doc042701 2-29

 Setup & Operation
2 Water Lube Operation
2.19 Water Lube Operation

See Figure 2-18. The Water Lube System keeps the blade clean. Water flows from a
5-gallon (18.9 liter) bottle through a hose to the blade guide where the blade enters the
log. A valve in the bottle cap controls the amount of water flow.

FIG. 2-18

Not all types of wood require the use of the Water Lube System. When it is needed, use
just enough water to keep the blade clean. This saves water, and lowers the risk of stain-
ing the boards with water. Usual flow will be 1-2 gallons (3.8-7.6 liters) per hour. A squirt
of liquid dishwashing detergent in the water bottle will help clean the blade when cutting
wood with a high sap content.

WARNING! Never use flammable fuels or liquids instead of

water with this accessory. If these type of liquids are neces-
sary to clean the blade, remove it and clean with a rag.

Before removing the blade, engage the clutch/brake lever. Let the blade spin with water
running on it for about 15 seconds. This will clean the blade of sap buildup. Wipe the
blade dry with a rag before storing or sharpening.

If you are sawing in freezing temperatures, remove the water lube bottle from the sawmill
when done sawing and store it in a warm place. Blow any remaining water from the water
lube hose.

2-30 HD92doc042701 Setup & Operation

 Setup & Operation
Preparing The Sawmill For Towing 2
2.20 Preparing The Sawmill For Towing

The Wood-Mizer trailer package makes transporting your sawmill easy and convenient.
To get your sawmill ready for towing, follow these instructions.

1. Move the saw carriage to the front end of the sawmill. Raise the rear outriggers.

2. Use the hydraulic controls to move the log clamp all the way toward the loading side of
the mill.

CAUTION! Failure to fully extend the log clamp before tow-

ing can result in damage to the clamping assembly during
towing.

3. Use the hydraulic controls to raise the log turner and loader as high as they will go. Man-
ually lift the loader and hook the loader chain to the elbow of the turner. Use the hydraulic
turner lever to lower the turner until the chain is tight. Push the loader lever down to bring
the loader arm channels up to the loader.

4. Move the carriage forward to the travel position over the rear bed rail.

5. Position the holes in the saw head over the travel rest pin.

6. Lower the saw head until it is seated firmly on the rest pin.

See Figure 2-19.

FIG. 2-19

Setup & Operation HD92doc042701 2-31

 Setup & Operation
2 Preparing The Sawmill For Towing
7. Continue lowering the head 3/4" (19mm). until it contacts the stop blocks on the mast
rails.

CAUTION! Failure to properly secure the saw head can

result in severe machine damage. Lower the saw head onto
the rest pin until it contacts the rest pin collar, then lower the
saw head 3/4" (19mm) further to insure that the saw head
cannot be dislocated from the rest pin.

8. If necessary, adjust the two stops located at the bottom of the mast so the saw head con-
tacts them after it is lowered 3/4" (19mm) past where it contacts the rest pin.

See Figure 2-20.

Loosen jam nut

and turn bolt
to raise or lower
stop bolt

SM0111

FIG. 2-20

9. Engage the clutch/brake lever. This keeps the drive belt tight and the motor from bounc-
ing while traveling. Be sure to disengage the clutch/brake handle after reaching the des-
tination to avoid deformation of the drive belt.

10. Hook the carriage safety chain located at the bottom of the carriage to the bracket at the
bottom of the mast.

2-32 HD92doc042701 Setup & Operation

 Setup & Operation
Preparing The Sawmill For Towing 2
See Figure 2-21.

FIG. 2-21

11. Remove all loose objects from the bed of the mill. Store the outrigger jack handle in the
bracket provided on the rear/loading-side outrigger guide. Reel in the winch cable.
Remove the winch handle.

12. Place both fenders in the slots located behind the trailer tires. Raise all but the very front
outrigger.

DANGER! Check to be sure the saw head is resting firmly

on the rest pin and mast rail stops and that the safety chain
is secured before towing the sawmill.

DANGER! Never operate or tow the sawmill without all

guards and covers in place and secured.

Be sure the blade housing and pulley covers are in place

and secure. If applicable, use the safety retainer pin and
cable to fasten blade housing covers.

See the trailer operator’s manual for specific information regarding hitch operation and
towing the sawmill.

Setup & Operation HD92doc042701 2-33

 Maintenance
Wear Life 3
SECTION 3 MAINTENANCE
This section lists the maintenance procedures that need to be performed.

The Short Interval Maintenance Schedule lists procedures that need to be performed
every 4, 8 or 25 hours.The Maintenance Log lists procedures that need to be performed
every 50, 100, 200, 300, 500, or 1000 hours. Keep track of machine maintenance by fill-
ing in the machine hours and the date you perform each procedure.

This symbol identifies the interval (hours of operation) at which each maintenance pro-
0 cedure should be performed.

3.1 Wear Life

See Table 3-1. This chart lists estimated life expectancy of common replacement parts if
proper maintenance and operation procedures are followed. Due to the many variables
which exist during sawmill operation, actual part life may vary significantly. This informa-
tion is provided so that you may plan ahead in ordering replacement parts.

Part Description Estimated

Life
Up/Down Motor Brushes 375 hours
B57 Blade Wheel Belts 500 hours
Up/Down Motor 750 hours
Hydraulic Pump Solenoid 750 hours
Power Feed Motor 750 hours
Brushes
Up/Down Drum Switch 1000 hours
Blade Guide Rollers 1000 hours
Hydraulic Pump Motor 1000 hours
Brushes
Power Feed Drum Switch 1200 hours
Drive Belt 1250 hours
Power Feed Motor 1500 hours
Power Feed Belt 2000 hours
Up/Down Belt 2000 hours
TABLE 3-1

Maintenance HD92doc042701 3-1

 Maintenance
3 Blade Guides
3.2 Blade Guides

See Figure 3-1.

1. Lubricate the blade guide rollers every four hours of operation. Use one squeeze of a
NLGI No. 2 grade lithium grease from a grease gun to lubricate the bearings and remove
4 any sawdust.

Grease blade
guide rollers (2)

SM0052B

FIG. 3-1

CAUTION! Do not over-grease. Over-greasing will push the

seals out of the blade guide bearings.

2. Check the rollers for performance and wear every blade change. Make sure the rollers
are clean and spinning freely. If not, rebuild them. Replace any rollers which have worn
smooth or have become cone shaped. See The LT30HD/40HD Parts manual for blade
guide rebuild kits and complete roller assemblies.

3. The blade guide set screws on sawmills built after 9/93 are stainless steel which prevent
corrosion from making the screws difficult to adjust. Screws on older sawmills may be
replaced with the stainless steel screw.

3-2 HD92doc042701 Maintenance

 Maintenance
Hydraulic Log Loader 3
3.3 Hydraulic Log Loader

Remove all sawdust and debris from around the velocity fuse valves every 8 hours of
8 operation. The valves are located at the bottom of the log loader cylinders.

Maintenance HD92doc042701 3-3

 Maintenance
3 Blade Housing
3.4 Blade Housing

1. Remove the excess sawdust from the blade wheel housings and sawdust chute every
blade change.

See Figure 3-2.

2. Make sure the blade screw (or cam bearing on machines before 11/91) in the top center
of the C-frame is 1/16" (1.5 mm) below the bottom of the blade. If not, loosen the nut and
adjust the screw as necessary. Check the screw every blade change. Failing to maintain
this adjustment will lead to early blade breakage.

1/16“ (1.6 mm)

SM0054

FIG. 3-2

3-4 HD92doc042701 Maintenance

 Maintenance
Carriage Track, Wiper & Scrapers 3
3.5 Carriage Track, Wiper & Scrapers

See Figure 3-3.

1. Clean the upper and lower track rails to remove any sawdust and sap buildup every eight
8 hours of operation. Lubricate the lower track rail by wiping it with Dexron III ATF.

NOTE: If the top rail is not factory painted, apply a rust inhibitor such as Sherwin-Williams
P.D.R.P #710 when the sawmill is not in use. Use a clean, dry cloth and a light lubricant
such as WD-40 to remove the protection coat before operating the sawmill.

FIG. 3-3

2. Remove sawdust from the upper cam housings. Loosen the thumb screws on the upper
cam housing covers and open. Brush any sawdust buildup from the housings.
8

3. Check the track scrapers as needed. Make sure the scrapers fit firmly against the rail. If a
track scraper needs to be adjusted, loosen the thumb screw, push the scraper downward
until it fits firmly against the rail, and retighten the thumb screw.

4. Clean and lubricate the track wiper every twenty-five hours of operation. Unbolt the wiper,
remove it from the sawmill, and remove any sawdust buildup. Soak the felt wiper with
25 Dexron III transmission fluid, 10W30 motor oil or 3-in-1 turbine oil. Replace the wiper.

CAUTION! Reinstall the wiper so that it lightly touches the

track rail. If the wiper presses too firmly against the rail, it
can cause the power feed to bind.

Maintenance HD92doc042701 3-5

 Maintenance
3 Track Rollers
3.6 Track Rollers

See Figure 3-4.

1. Lubricate the greasable track roller bearings every fifty hours of operation. Use a NLGI
No. 2 grade lithium grease.
50

FIG. 3-4

3-6 HD92doc042701 Maintenance

 Maintenance
Vertical Mast Rails 3
3.7 Vertical Mast Rails

Clean and lubricate the vertical mast rails every 50 hours of operation. Clean with solvent
50 and remove any rust with a light-grade sand paper or emery cloth. Lubricate the mast with
motor oil or automatic transmission fluid (ATF).

CAUTION! Never use grease on the mast rails as it will col-

lect sawdust.

Maintenance HD92doc042701 3-7

 Maintenance
3 Drum Switches
3.8 Drum Switches

Lubricate the up/down and power feed drum switch contacts inside the control panel
every fifty hours of operation. Use only contact grease supplied by Wood-Mizer. Remove
50 the control panel cover. Use a cotton swab to apply grease to the switch contact ends.

WARNING! Drum switch grease contains Petroleum Hydro-

carbon Lubricant. Eye and skin irritant. If introduced into
eyes, flush with water for at least 15 minutes. If film or irrita-
tion persists, seek medical attention. Wash skin with soap
and water. If ingested, do not induce vomiting - contact a
physician. KEEP OUT OF THE REACH OF CHILDREN.

3-8 HD92doc042701 Maintenance

 Maintenance
Miscellaneous Lubrication 3
3.9 Miscellaneous Lubrication

1. Apply a thin film of a NLGI No. 2 grade lithium grease to the blade guide arm every fifty
50 hours of operation to help prevent it from rusting.

2. Grease the clamp mechanism, loading arm, and side supports with a NLGI No. 2 grade
50 lithium grease every fifty hours of operation.

3. Oil all chains with Dexron III ATF every fifty hours of operation.
50

CAUTION! Do not use chain lube. It causes sawdust

buildup in chain links.

Maintenance HD92doc042701 3-9

 Maintenance
3 Blade Tensioner
3.10 Blade Tensioner

1. Lubricate the chrome rods of the tensioner system with a heavy duty teflon spray lubri-
cant, such as Gunk L508, every fifty hours of operation.
50

2. Lubricate the tensioner screw handle with a NLGI No. 2 grade lithium grease as needed.

See Figure 3-5.

FIG. 3-5

3-10 HD92doc042701 Maintenance

 Maintenance
Blade Wheel Belts 3
3.11 Blade Wheel Belts

1. Rotate the blade wheel belts and check them for wear. Rotating the belts every 50 hours
will give you longer belt life. Replace belts as necessary. Use only B57 belts manufac-
50 tured by Goodyear or Browning.

2. Periodically check all belts for wear. Replace any damaged or worn belts as needed.

Maintenance HD92doc042701 3-11

 Maintenance
3 Brake Strap Adjustment
3.12 Brake Strap Adjustment

Hydraulic Sawmills Revisions F2+: Check the brake strap for wear every 200 hours of
200 operation. Replace if damaged or worn.

Also check and adjust the brake strap if the blade does not stop quickly, unusual sounds
occur when the brake is applied, or a sudden change is noticed in the clutch handle posi-
tion when the clutch is disengaged. To access the brake strap, remove the belt cover
located underneath the engine. Engage the clutch/brake lever. Loosen the two brake
strap clamping bolts and slide the lower brake strap clamping plate and metal-backed
brake strap forward until snug. Retighten the bolts. Replace the belt cover.

Metal-backed
brake strap

Brake strap
clamping bolts (2)

Lower
clamping plate

SM0056B

FIG. 3-5

Hydraulic Sawmills Revisions F1 and Prior: Check the brake strap after the first 20 hours,
and every 50 hours thereafter. If the blade does not stop quickly, the brake strap needs
adjusting. To access the brake strap, remove the two belt covers located underneath the
50 engine. Engage the clutch/brake lever. Loosen the two brake strap clamping bolts and
pull the brake strap about 1/2" (12.7 mm) through the clamping plates. Retighten the
bolts. Replace the belt guards.

3-12 HD92doc042701 Maintenance

 Maintenance
Brake Strap Adjustment 3
See Figure 3-6.

Metal-backed
brake strap

Brake strap
clamping bolts (2)

Lower
clamping plate

SM0056B

FIG. 3-6

Maintenance HD92doc042701 3-13

 Maintenance
3 Hydraulic System
3.13 Hydraulic System

1. Check the hydraulic fluid level every fifty hours of operation. Add fluid as necessary. The
50 level in the hydraulic pump should be 4 1/2" (114 mm) with all cylinders collapsed.

If humidity is a problem or the mill is used outside in humid weather, drain and replace two
quarts (.95 liters) of fluid every six months. This will drain any accumulated water and
help prevent pump failure due to water ingestion. It also will prevent excessive fluid wear
and allow the fluid to maintain its hot end performance.

If humidity is not a problem, drain and replace one gallon (3.8 liters) of fluid every year to
prevent fluid wear.

See Figure 3-7. If you are operating in temperatures -20° to 100° F (-29° to 38° C), use
an all-weather hydraulic fluid such as Exxon Univis J26. For alternate fluids and/or other
temperature ranges, refer to the chart below. Operating above the recommended temper-
ature range of a fluid could result in excessive pump wear. Operating below the recom-
mended temperature range could result in reduced hydraulic cylinder speed. To change
fluid types, replace one gallon of the current fluid with one gallon of the alternate fluid.

TEMPERATURE
F -30° -20° -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100° 110° 120°

C -35° -29° -23° -18° -12° -7° -1° 5° 10° 16° 21° 27° 32° 38° 44° 49°

Level A Fluid
HYDRAULIC FLUID

Level B Fluid
Level C Fluid

HD0049B

FIG. 3-7

2. Hydraulic Sawmills Revisions E7+ Only: Replace the hydraulic system cartridge filter
500 every 500 hours of operation.

3. Hydraulic Sawmills purchased before 12/93 Only: Service the hydraulic drive motor
(D.C. Motor) every 500 hours of operation. Refer to the Electrical Problems section of the
500 Monarch manual, page 7, section 2, steps A-H. Also make sure the slots between the
commutator segments are clear of foreign material.

3-14 HD92doc042701 Maintenance

 Maintenance
Hydraulic System 3
To check for excessive end play, as listed in step H, perform the following:

Remove the rear head assembly.

Position (push) the armature shaft to assure that it's drive tab is fully engaged with
the pump shaft slot.

Position (push) the stator frame so it is tight against the pump.

Lay a 6" (15 cm) straightedge across the shaft's exposed bearing journal so it is in
contact with the end of the stator's outer wrap.

Measure the gap between the straightedge and the fiber thrust washers located
against the end of the commutator.

Add fiber washers as needed to give a .02 to .05 inch (.51 to 1.27 mm) gap.

Make sure the washer which contacts the end of the commutator is made of steel.

Assemble the rear head assembly to the motor.

4. Periodically check all hydraulic lines and fitting as needed. Replace as necessary.

Maintenance HD92doc042701 3-15

 Maintenance
3 Drive Bearing
3.14 Drive Bearing

Refill the fluid in the drive-side cylinder bearing housing every 1000 hours of operation.
Remove the top and bottom oil plugs. Pour an Automatic Transmission Fluid (ATF) such
1000 as Dexron III ATF into the top hole until it begins to flow from the bottom hole. Reinstall
the square oil plug to the bottom hole and the vented oil plug to the top hole.

See Figure 3-8.

FIG. 3-8

3-16 HD92doc042701 Maintenance

 Maintenance
Up/Down System 3
3.15 Up/Down System

1. Grease the up/down gear reducer shaft bearing with a NLGI No. 2 grade lithium grease
1000 every 1000 hours of operation.

See Figure 3-9.

FIG. 3-9

Maintenance HD92doc042701 3-17

 Maintenance
3 Up/Down System
2. Adjust the up/down belt as needed. Remove the up/down housing cover. To tighten the
belt, loosen the two motor mount nuts. Adjust the bolt underneath the motor upward so
there is 3/8" (9.5 mm) deflection with a 7 lb. (3.2 Kg) deflection force. Tighten the jam nut
to secure the bolt in place. Retighten the motor mount nuts. Replace the drive pulley
cover.

See Figure 3-10.

FIG. 3-10

3-18 HD92doc042701 Maintenance

 Maintenance
Up/Down System 3
3. Adjust the up/down chain tension as needed. Measure chain tension with the head all the
way to the top of the vertical mast. Secure the carriage with a chain at the top. Find the
chain adjusting bolt at the bottom of the mast, behind the battery box. Adjust the nuts on
the bolt until you can get about 1 1/2" (3.8 cm) total deflection in the center of the chain
with a 5 lb. (2.3 Kg) deflection force.

See Figure 3-11.

DANGER! Always secure the cutting head with a 5/16”

chain with at least 1900 lbs. working load capacity before
adjusting the up/down chain. The cutting head may fall,
causing severe injury or death.

CAUTION! Do not over-tension the chain. Over-tensioning

the chain may lead to early failure of the gear reducer.

FIG. 3-11

4. Check the up/down gearbox oil level. Add a synthetic gear oil such as Mobil SHC 634 as
needed. Drain and refill the gearbox with 14 - 16 ounces of oil after the first 100 hours of
sawmill operation. Repeat every 5000 hours or once a year, whichever comes first.

Wood-Mizer offers replacement gear oil in 8 ounce bottles (2 required for complete oil
replacement).

Maintenance HD92doc042701 3-19

 Maintenance
3 Power Feed
3.16 Power Feed

1. Adjust the power feed belt as needed. When the power feed belt gets loose, it will begin
slipping. This causes the carriage to not move forward when cutting. To retighten the belt,
remove the feed motor cover. Loosen the three motor mounting bolts.

See Figure 3-12. Pivot the motor so that the motor pulley moves away from the large
feed pulley. Tighten the belt so there is 1/8" (3 mm) deflection with a 7 lb. (3.2 Kg) deflec-
tion force. Retighten the motor bolts and replace the feed motor cover.

FIG. 3-12

2. Adjust the power feed chain as needed. Measure the power feed chain tension with the
saw head all the way toward the front of the mill. Use the two lock nuts at the rear of the
mill to tighten or loosen the power feed chain. Adjust the chain until it measures 7 to 8
inches (17.8 to 20.3 cm) from the top of the top rail at its lowest point.

CAUTION! Do not overtighten the feed chain. Damage to

the power feed motor may result.

3-20 HD92doc042701 Maintenance

 Maintenance
Power Feed 3
See Figure 3-13.

3H0018B

Feed Chain
Adjustment Nuts

FIG. 3-13

Maintenance HD92doc042701 3-21

 Maintenance
3 Miscellaneous Maintenance
3.17 Miscellaneous Maintenance

1. Check the mill alignment every setup. See Section 5, Alignment.

2. Make sure all safety warning decals are readable. Remove sawdust and dirt. Replace any
damaged or unreadable decals immediately. Order decals from your Customer Service
Representative.

WARNING! Keep all safety warning decals clean and visi-

ble. If decal becomes worn or damaged, replace immedi-
ately.

3. Check all battery and fuse box connections are tight and free of corrosion. In 7/93, the
fuse block assembly was upgraded to prevent connections from coming loose and over-
heating. The fuse block can be retrofitted to LT30HD/40HD rev D3-E2.

3-22 HD92doc042701 Maintenance

 LT30HD/40HD Short Interval Maintenance Schedule
PROCEDURE MANUAL
REFERENCE
EVERY 4 HOURS
Lubricate Blade Guide Rollers SEE SECTION 3.2
EVERY BLADE CHANGE
Check Blade Guide Roller Performance SEE SECTION 3.2
Remove Excess Sawdust From Blade Wheel Housings And Sawdust Chute SEE SECTION 3.4
Check Blade Screw (or cam bearing) SEE SECTION 3.4
EVERY 8 HOURS
Clean And Lubricate Track SEE SECTION 3.5
Remove Sawdust From Upper Cam Housings SEE SECTION 3.5
Clean Sawdust From Hydraulic Loader Velocity Fuse Valves SEE SECTION 3.3
EVERY 25 HOURS
Clean And Lubricate Upper Track Wiper SEE SECTION 3.5

f:\manuals\forms\63592 HD92doc040301
 WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
50 HRS 100 HRS 150 HRS 200 HRS 25O HRS 300 HRS 350 HRS 400 HRS 450 HRS 500 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
550 HRS 600 HRS 650 HRS 700 HRS 75O HRS 800 HRS 850 HRS 900 HRS 950 HRS 1000 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 ]

WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
1050 HRS 1100 HRS 1150 HRS 1200 HRS 125O HRS 1300 HRS 1350 HRS 1400 HRS 1450 HRS 1500 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
1550 HRS 1600 HRS 1650 HRS 1700 HRS 175O HRS 1800 HRS 1850 HRS 1900 HRS 1950 HRS 2000 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
2050 HRS 2100 HRS 2150 HRS 2200 HRS 225O HRS 2300 HRS 2350 HRS 2400 HRS 2450 HRS 2500 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 WOOD-MIZER LT30HD/LT40HD MAINTENANCE LOG

PROCEDURE MANUAL TOTAL HOURS OF OPERATION

REFERENCE FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE.
A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME.
2550 HRS 2600 HRS 2650 HRS 2700 HRS 275O HRS 2800 HRS 2850 HRS 2900 HRS 2950 HRS 3000 HRS
Clean & lube mast rails See Section 3.7
Grease track rollers (If greasable rollers) See Section 3.6
Lubricate drum switches See Section 3.8
Grease pivot points and bearings/Oil chains See Section 3.9
See Section 3.15
See Section 3.16
Check belt tensions See Section 3.15
See Section 3.16
Check brake strap tension See Section 3.12
Rotate drive/idle blade wheel belts/Check all belts for See Section 3.11
wear
Check feed & up/down chain tensions See Section 3.15
See Section 3.16
Check up/down gear box fluid level See Section 3.15
Lubricate blade tensioner handle and rods See Section 3.10
Inspect hydraulic lines & fittings See Section 3.13
Check hydraulic fluid level See Section 3.13
Replace hydraulic system filter (Rev E7+) See Section 3.13
Service Hydraulic Drive Motor (Rev C7 - E6) See Section 3.13
Replace cylinder drive bearing fluid See Section 3.14
Grease up/down shaft bearing See Section 3.15

f:\manuals\forms\624 HD92doc042701
 Troubleshooting Guide
Sawing Problems 4
SECTION 4 TROUBLESHOOTING GUIDE

4.1 Sawing Problems

PROBLEM CAUSE SOLUTION

Blades Dull Quickly Dirty logs Clean or debark logs, especially on

entry side of the cut

When grinding teeth, heating Grind just enough metal to restore

too much and causing teeth to sharpness to the teeth. Use
soften water/coolant while sharpening blade

Poor sharpening techniques Make sure the tip is being sharpened

completely. See Sharpener Manual.

Blades Break Prematurely Rubber belts on blade wheels Change blade wheel belts (B-57)
worn to a point that blade con-
tacts metal pulley - look for
shiny spots on edge of wheels

Poor sharpening techniques See Sharpener Manual

Tension too tight Tension blade to recommended speci-

fications

Blade Does Not Track Right Cant adjustment is incorrect Readjust

on Drive Wheel

Flat/worn belts Replace B-57 belts

Blade Guides Do Not Spin Frozen bearings Replace bearings

While Cutting

Stiff bearings Grease bearings

Blade Does Not Stop Immedi- Brake strap too loose Adjust brake strap
ately After Disengaging

Drive Belts Come Off Pulleys Brake strap too loose Adjust brake strap
When Disengaging Blade

Brake drum misaligned Realign on drive shaft

Brake strap tightened with one Adjust brake strap

edge too loose and one edge
too tight

Drive Belts Wear Prematurely Engine/motor and drive pul- Align pulleys See Section 4.6
or Jump leys out of alignment Engine/Motor and Drive Pulleys Align-
ment.

Troubleshooting Guide HD92doc042701 4-1

 Troubleshooting Guide
4 Sawing Problems
Boards Thick Or Thin On Stress in log which causes log After log has been squared, take
Ends Or Middle Of Board to not lay flat on the bed equal cuts off opposing sides. Take a
board off the top. Turn the log 180
degrees. Take a board off. Repeat,
keeping the heart in the middle of the
cant, and making it your last cut

Set in teeth Resharpen and reset blade

Bed rails misaligned Realign sawmill.

Height Adjustment Jumps or Mast needs lubrication Lubricate mast track surface
Stutters When Moving Up or
Down

Up/down chain improperly Adjust up/down chain.

adjusted

Vertical wear pads are too Adjust pads.

tight

Drive belt(s) loose Adjust belts.

Lumber Is Not Square Vertical side supports not Adjust side supports.
square to bed

Blade not parallel to bed rails Adjust bed rails parallel to blade.

Sawdust or bark between cant Remove particles

and bed rails

Tooth set problems Resharpen and reset blade

Sawdust Builds Up On Track Excessive oiling Do not oil track

Track wipers worn Adjust wipers to firmly contact track

Track is sticky Clean track with solvent and apply sili-

cone spray

Wavy Cuts Excessive feed Slow feed rate

Improperly sharpened blade Resharpen blade. See Sharpener

(This will be the problem 99% Manual - read entire manual!
of the time!)

Blade guides improperly Adjust blade guides.

adjusted

Sap buildup on blade Use Water Lube.

Tooth set problem Resharpen and reset blade

4-2 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Electrical Problems 4
4.2 Electrical Problems

PROBLEM CAUSE SOLUTION

Up/down Elevator Exces- Vertical wear pads too tight Adjust pads.
sively Slow

Up/down belt loose Adjust belt to be as loose as possible

without slipping

Up/down Or Power Feed Worn contacts in drum switch Replace switch or remove control
Motors Do Not Work panel cover and clean contacts

Burned-out motor Replace motor

Bad connection on battery Check for loose wire or terminal con-

post or loose wire nections

Up/Down Or Power Feed Worn or dirty contacts in drum Manually move the power feed or
Switches Remain Engaged switch up/down switch back to neutral or
When Switch Is Released "off" position. Replace drum switch or
remove control panel cover and
clean and lubricate contacts NOTE:
Use only contact grease supplied by
Wood-Mizer.

Drum switch spring broken Manually move the power feed or

up/down switch back to neutral or
"off" position. Replace drum switch
spring

Up/Down Or Power Feed System overload or bind Correct problem. See Section 4.3
Motors Overheat And Loose occurred. Power Feed Problems. Allow motor
Power to cool before restarting.

Normal operation factors Allow motor to cool before restarting.

exceeded (eg: up/down con-
trol jockeyed excessively)

Everything Works And Then Bad connection in battery Check connection

Cuts Out - Works Again

Nothing Works Electrically Dead battery Check for short circuit or turn OFF
key

Bad circuit breaker Replace

Troubleshooting Guide HD92doc042701 4-3

 Troubleshooting Guide
4 Electrical Problems
Bad fuse Replace

Bad connection in battery Check connections

Corrosion on battery post Remove connection and clean posts

Battery Will Not Stay Charged Key switch left ON Turn switch OFF when not in use

Short in system Visually check for bare wires and/or

have checked

Charging system not function- Have system checked by authorized

ing Onan dealer

Bad cells Check fluid levels and add proper

solution

Idle improper Adjust low end RPM

Burned out alternator light Check for loose wire. Replace light if
necessary.

4-4 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Power Feed Problems 4
4.3 Power Feed Problems

NOTE: If the power feed circuit board has been upgraded since 9/96: The power feed cir-
cuit board is equipped with LED lights to help determine if the circuit board or feed rate
switch are the cause of any feed problems you may encounter. See Section 4.4 Power
Feed Circuit Troubleshooting for instructions.

PROBLEM CAUSE SOLUTION

Power Feed Is Jerky At Low Drum switch is dirty Clean drum switch and lubricate with
Speeds Or Does Not Move contact grease supplied by
Until Speed Is Above Halfway Wood-Mizer
Mark

Drum switch contacts are bad Check that contacts are in good condi-
tion and positively close circuit

Components are loose or Inspect PC board for loose connec-

wires are broken tions and components; Send PC board
to Wood-Mizer for guaranteed repair

Power Feed Is Jerky When Variable speed switch is bad - Replace variable speed switch
Shaft Of Feed Rate Dial Is perform the variable speed
Moved Back And Forth switch test.

Power Feed Is Jerky, But Problem is mechanical. Refer to the Mechanical Test.
Power Feed Motor Runs Prop-
erly At All Speeds

Power Feed Motor Overheats Middle track oiler is dragging Clean middle track oiler and lubricate
with 30-weight oil or ATF (Automatic
Transmission Fluid) such as Dexron II.
Allow motor to cool before restarting

Ground is not level Level mill with carpenter's level. Allow

motor to cool before restarting

Track roller bearing drag is Lubricate bearings; Replace tight bear-

excessive ings. Allow motor to cool before
restarting

Lower track rollers are not Check stop block clearance from lower
aligned properly bed rail. Allow motor to cool before
restarting

Troubleshooting Guide HD92doc042701 4-5

 Troubleshooting Guide
4 Power Feed Problems
Chain is dragging Make sure chain is centered on cam
follower bearing; Clean and lubricate
chain; Adjust chain tension. Allow
motor to cool before restarting

Chain is improperly tensioned Adjust chain tension. Allow motor to

cool before restarting

Seat load is excessive Check seat bearings for freedom of

movement; Loosen clamping screw
1/4 turn. Allow motor to cool before
restarting

Power feed is binding Adjust belt tension; Check condition of

belt, pulleys, bearings, and sprocket;
Check motor for ground fault. Allow
motor to cool before restarting

Saw head load is excessive Avoid unnecessary modifications to

saw heads that would give them extra
weight. Allow motor to cool before
restarting

Blade is dull or improperly set Use proper blade maintenance proce-

dures. See Sharpener or Toothsetter
manual. Allow motor to cool before
restarting

4-6 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Power Feed Circuit Troubleshooting 4
4.4 Power Feed Circuit Troubleshooting

On circuit boards after 9/96, LED lights are provided to help determine if the circuit board
or feed rate switch are the cause of any feed problems you may encounter.

See Figure 4-1. The lights can be viewed by removing the front control box panel.

FIG. 4-1

If you have trouble determining the problem indicated by the LED lights, please note
which lights are on and call customer service for assistance.

IN - This light normally dims and brightens as the feed rate switch is turned up or down. If
the light does not correspond to the feed rate switch, the switch has failed or is not wired
correctly.

OFF - This indicator is active anytime the TEMP, CL or IL light is active. This light indi-
cates the shutdown circuit has been activated. If the light comes on without the CL, IL, or
TEMP light also on, the circuit board is wet or defective. If you determine the board is not
wet, replace it.

IL - This light indicates the circuit board has detected a failure of the output circuit protec-
tion or that the power feed motor has been replaced with a motor not provided by
Wood-Mizer. The light will flash about once every second and will deactivate the output

Troubleshooting Guide HD92doc042701 4-7

 Troubleshooting Guide
4 Power Feed Circuit Troubleshooting
circuit. If the power feed motor is a Wood-Mizer replacement, replace the circuit board.

CL - This light indicates an extreme overload condition of the power feed motor or a short
in the wiring between the motor and circuit board. The light will flash about once every
second and deactivate the feed system until the problem is corrected.

TEMP - When lit, this light indicates the temperature of the output circuit is too high and
will shut off the circuit. Once the circuit cools, the light will go off and the feed will become
operational. Temperatures become too high when the power feed motor is overloaded.

OUT - This light normally dims and brightens at the same rate as the IN light when the
feed rate switch is turned up and down. If the OUT light does not correspond with the IN
light, replace the circuit board.

4-8 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Hydraulic Problems 4
4.5 Hydraulic Problems

PROBLEM CAUSE SOLUTION

You Can Actuate Any Hydrau- Carriage not positioned prop- Move carriage so that contacts touch.
lic Handle, But Get No erly to provide power to the Make sure carriage contact bracket is
Response From The Pump. pump adjusted far enough forward to touch
contact on main tube. Check contacts
for tarnish or loose wires

Defective solenoid (may be Tapping on solenoid may fix tempo-

indicated by solenoid clicking) rarily. Replace solenoid. NOTE: The
See Monarch manual for trou- solenoid is not a standard automotive
bleshooting solenoid type. Order from Monarch or
Wood-Mizer only

Low or dead battery Test battery. Replace or recharge as

necessary

Defective pump motor Remove motor from pump and

inspect. Repair or replace as neces-
sary

Poor ground connection Check ground connection between

pump and saw frame

You Can Get Response From Valve assembly switch con- Locate the valve switch at the bottom
the Pump By Actuating All tacts are not properly adjusted of the valve assembly. Use a 3MM
But One or Two Handles allen wrench to loosen the set screw
(Revisions E7+ Only) on each of the five switch contacts.
Press each contact to the valve block
and tighten the contact set screw to
secure in place. CAUTION! Do not
overtighten!

NOTE: Do not adjust the valve switch

or switch spring; they have been pre-
set at the factory.

You Can Get Response From Electric contact spring inside Check contact spring. Relocate or
The Pump By Actuating All of non-working valve cor- replace as necessary
But One Handle (Revisions C7 roded, broken, or dislocated
- E6 Only)

Set screw holding handle to Tighten set screw so that valve shaft
valve shaft is loose turns when handle is actuated

Troubleshooting Guide HD92doc042701 4-9

 Troubleshooting Guide
4 Hydraulic Problems
Pump Motor Runs With Little Low battery Test battery. Recharge or replace as
Or No Response From The necessary
Cylinders

Debris clogging pressure relief Clean pressure relief valve. See Mon-
valve (Revisions C7 - E6 arch manual.
Only)

Low fluid level Check fluid level. Add an all-season

hydraulic fluid such as Amoco Rycon
Oil MV or Mobil Multipurpose ATF
(automatic transmission fluid)
until level is 4 - 4 1/2" from bottom of
reservoir with all cylinders retracted

Pressure relief valve moved Adjust pressure relief valve.

from proper setting

Low air temperature causing Allow fluid to warm up. Synthetic flu-
fluid to thicken ids are available that allow for hydrau-
lic operation in cold weather
conditions (Mobil SHC 526)

Pump Motor Runs Continu- Solenoid is stuck closed Tapping the solenoid may solve this
ously When Power Contact Is problem temporarily. Replace sole-
Made noid

Valve handle spring is Replace handle spring

deformed or broken, causing
the handle to not return to the
neutral position (Revisions C7
- E6 Only)

Contact spring is dislocated Replace contact spring

and lying across contacts
(Revisions C7 - E6 Only)

Fluid Leaks From Around Cyl- Worn seals Replace seals in cylinder. Check pis-
inder Piston Ram ton ram for abrasive weld that may be
causing premature seal failure

4-10 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Hydraulic Problems 4
Fluid Leak Around Pump Box Loose seal or fitting Wipe pump off completely to locate
cause of lead. You may have to
unbolt the pump to wipe behind it.
NOTE: Movement of the sawmill can
cause fluid to slosh up into the foam
filter in the reservoir cap, and subse-
quently spray out, giving the appear-
ance that fluid is leaking from the
pump

Hydraulic Side Supports Go Dirt in sequence valve Remove sequence valves and clean
Down Before Or At Same thoroughly with kerosene. NOTE: Be
Time As Log Turner sure to reassemble the valve and
install it in its original position on the
cylinder

Retainer in sequence valve Replace sequence valve

worn

Low air temperature causing Allow fluid to warm up. Synthetic flu-
fluid to thicken ids are available that allow for hydrau-
lic operation in cold weather
conditions (Mobil SHC 526)

Hydraulic Turner Goes Up Spring weakening in Locate sequence valve at top of

Before Or At Same Time As sequence valve turner cylinder. Turn heavy spring in
Side Supports about 1/4 turn

Dirt in sequence valve Remove sequence valves and clean

thoroughly with kerosene. NOTE: Be
sure to reassemble the valve and
install it in its original position on the
cylinder

Retainer in sequence valve Replace sequence valve

worn

Low air temperature causing Allow fluid to warm up. Synthetic flu-
fluid to thicken ids are available that allow for hydrau-
lic operation in cold weather
conditions. (Mobil SHC 526)

Springs weakening in Locate sequence valve at bottom of

sequence valve. turner cylinder. Turn heavy spring in
about 1/4 turn

Troubleshooting Guide HD92doc042701 4-11

 Troubleshooting Guide
4 Engine/Motor and Drive Pulleys Alignment
4.6 Engine/Motor and Drive Pulleys Alignment

1. Install the drive belt.

2. Use a straight edge to align the engine/motor pulley to the drive pulley. Also check that
the engine pulley is within 1/8" square with the drive pulley. Loosen the engine mounting
bolts and rotate the engine if necessary.

3. Check front-to-back movement of the engine does not exceed 1/4". Tighten the motor
mount U-bolts if necessary.

4. Engage the clutch handle and adjust the drive belt tension to 7/16" deflection with 10 lb.
of force.

5. Recheck the pulley alignment and engine squareness with the clutch handle engaged.
Adjust if necessary.

6. Adjust the drive belt support to 1/4" (±1/32) from the belt while engaged.

4-12 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Power Feed Variable Speed Switch Test 4
4.7 Power Feed Variable Speed Switch Test

With the feed rate dial switch all the way down, move the shaft of the dial back and forth
to see if there is a jerky response. Turn the dial and move the shaft back and forth again.
Repeat several times. If the jerkiness occurs at the same location on the dial several
times, you need to replace the variable speed switch.

Troubleshooting Guide HD92doc042701 4-13

 Troubleshooting Guide
4 Power Feed Preliminary Test
4.8 Power Feed Preliminary Test

This test will determine if the problem is a mechanical or electrical.

1. Remove the drive belt from the power feed drive pulley.

2. Turn the key switch to the ACC position. Put the carriage fwd/rev switch into the forward
position and turn the feed rate dial through all speeds. If the power feed motor runs prop-
erly at all speeds, the problem is a mechanical one instead of an electrical one.

4-14 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Power Feed Mechanical Test 4
4.9 Power Feed Mechanical Test

1. Remove the weight from the track rollers. They should turn smoothly and easily with very
little play.

2. Make sure the middle track cover is not bent or touching the top rail.

3. Make sure the middle track oiler, if applicable, is free of sawdust buildup.

4. Make sure the power feed chain is not stiff from rust. Also make sure the chain is not too
tight.

5. Check the power feed shaft. Visually inspect the bearings. The shaft should move neither
in or out nor side to side.

6. Make sure the power feed chain cam bearing is not touching the main frame tube.

7. If you have an old-style mill with loop-designed feed chain, inspect the front and rear
sprocket assemblies. Make sure there are no defective bearings.

8. Make sure there is no sap or rust on the rails.

9. Make sure the block on the lower track roller assembly is not rubbing the lower rail. Also
make sure the track rollers are not too tight.

10. Make sure the power feed belt is properly tightened.

Troubleshooting Guide HD92doc042701 4-15

 Troubleshooting Guide
4 Hydraulic Pressure Test
4.10 Hydraulic Pressure Test

To check hydraulic pressure on E7+ revision LT30HD/LT40HD mills:

1. Disconnect power from the pump by moving the saw head forward until it no longer con-
tacts the power strip.

2. Locate the loading arm port fitting on the hydraulic valve body.

See Figure 4-2.

Loading arm
port fitting

Loading arm
hydraulic lever

Relief valve HD0043

adjustment screw

FIG. 4-2

3. Disconnect the hydraulic hose from the fitting and install a gauge to the fitting. NOTE:
Installing the gauge at the loading arm fitting port will insure the pressure reading is not
affected by a relief valve.

4. Restore power to the pump by moving the saw head back until it contacts the power strip.

5. Operate the loading arm hydraulic lever and read the pressure on the gauge. Hydraulic
pressure is factory-set at 2000 ±100 psi and should not need to be readjusted. The relief
valve adjustment screw shown may be used to fine-tune the hydraulic pressure.

CAUTION! Pressure should not exceed 2100 psi. If it does,

the amp draw will rise above the maximum of 200 amps,
and could cause battery and system problems.

4-16 HD92doc042701 Troubleshooting Guide

 Troubleshooting Guide
Hydraulic Pressure Test 4
To check hydraulic pressure on C7 - E6 revision LT30HD/LT40HD mills:

1. Disconnect power from the pump by moving the saw head forward until it no longer con-
tacts the power strip.

2. Locate the fitting on the front toe board cylinder. Disconnect the hydraulic hose from the
fitting and install a gauge to the fitting. NOTE: Installing the gauge at the front toe board
fitting port will insure the pressure reading is not affected by a relief valve.

3. Restore power to the pump by moving the saw head back until it contacts the power strip.

4. Operate the toe board hydraulic lever and read the pressure on the gauge. Hydraulic
pressure is factory-set at 2000 ±100 psi and should not need to be readjusted. Contact
the factory for service.

CAUTION! Pressure should not exceed 2100 psi. If it does,

the amp draw will rise above the maximum of 200 amps,
and could cause battery and system problems.

Troubleshooting Guide HD92doc042701 4-17

 Sawmill Alignment
Pre-Alignment Procedures 5
SECTION 5 SAWMILL ALIGNMENT

5.1 Pre-Alignment Procedures

The Wood-Mizer sawmill is factory aligned. Periodically check the sawmill alignment and
adjust if necessary. This chapter explains how to align the entire sawmill. Care should be
taken in performing these steps. Sawmill alignment determines the accuracy and square-
ness of your cuts.

The sawmill alignment steps are:

1. Ready the sawmill for alignment

2. Adjust the main bed rails parallel to the blade

3. Adjust the blade guide arm parallel to the bed rails

4. Align blade guides to the blade

5. Adjust side supports square to the bed

6. Adjust pivot bed rails parallel to the blade

7. Final Adjustments

To insure accurate alignment, the sawmill frame must be level and a blade properly
installed.

Sawmill Alignment HD92doc042701 5-1

 Sawmill Alignment
5 Frame Setup
5.2 Frame Setup

Stationary sawmills should be setup on firm, level ground before proceeding with align-
ment. Shim the feet so the weight of the sawmill is evenly supported.

Portable sawmills should also be setup on firm, level ground. Adjust the two middle out-
riggers on the main frame tube down just enough to lift weight from the trailer tire.

Adjust the two outer outriggers down just so they touch the ground but do not bear
weight.

5-2 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Blade Installation And Alignment 5
5.3 Blade Installation And Alignment

See Figure 5-1. Install a blade and apply the appropriate tension (See Section 2.5 Ten-
sioning The Blade). Blade tension is adjusted with the tension handle shown.

1/8" (3.0 m)
± 1/32" (0.75 mm)

1 1/4"
Blade

3/16" (4.5 mm)

± 1/32" (0.75 mm)

1 1/2"
Blade
SM0044C

FIG. 5-1

Check the vertical alignment of the blade wheels. The gullet of the blade should ride the
same distance from the front edge of the wheel at the top, bottom, and side of the wheel.
If it does not, loosen and tighten the appropriate adjustment screws on the back of the
wheel. See Figure 5-1

See Figure 5-2. The blade wheels should be adjusted so that the gullet of 1 1/4" blades
ride 1/8" (3 mm) out from the front edge of the wheels (±1/32 [.75 mm]). The gullet of 1
1/2" blades should ride 3/16" (4.5 mm) from the front edge of the wheels (±1/32 [.75
mm]). Do not let the teeth ride on the wheels.

1/8" (3.0 m)
± 1/32" (0.75 mm)

1 1/4"
Blade

3 /16" (4.5 mm)

± 1/3 2" (0. 75 mm)

1 1/2"
Blade
SM0044C

FIG. 5-2

Sawmill Alignment HD92doc042701 5-3

 Sawmill Alignment
5 Blade Installation And Alignment
To adjust where the blade travels on the idle-side blade wheel, use the cant control
shown in Figure 5-1.

1. Start the engine. Pull lightly on the clutch handle to rotate the blade until it locates itself on
the blade wheels. If the blade is too far forward on the wheels, turn the cant control coun-
terclockwise. If it is too far back on the wheels, turn the cant control clockwise.

2. Some adjustment in blade tension may be needed to compensate for adjustments made
with the cant control.

Adjustment with the cant control handle is usually all that is required to track the blade
properly on both blade wheels. The drive-side blade wheel will usually not have to be
adjusted. If necessary, the drive-side wheel can be adjusted as follows:

Look at the drive shaft from the side. Locate the U-bolt on the right holding the bearing
housing to the mounting plates.

Locate the jam nuts on the U-bolt between the two mounting plates. If the blade is running
too far to the front of the drive-side blade wheel, turn the jam nuts toward the bearing
housing. If the blade is too far back, turn the nuts away from the bearing housing.

Make sure to tighten the jam nuts against the mounting plates when adjustment is com-
plete.

5-4 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Saw Head Slide Pad Adjustment 5
5.4 Saw Head Slide Pad Adjustment

There are eight nylon pads positioned between the saw head frame and vertical mast.
The spacing of the pads is factory set and rarely needs adjusting. To check the pad spac-
ing, perform the following steps.

NOTE: The pads on the engine side of the mast are referred to as the "inner" pads. The
pads on the control side of the mast are referred to as the "outer" pads.

NOTE: Shims are often used around the clamping bolts, between the C-frame support
bracket and the mast v-brace. The shims align the v-brace to the mast so that the entire
face of each slide pad makes contact with the mast. Be sure to keep these shims in place
when performing the following adjustment.

See Figure 5-3.

1. Raise the saw head to the top of the vertical mast. Check the top set of four pads.The
outer two pads should be touching the mast rails. There should be a small gap (just wide
enough to slide a business card through) between one of the inner pads and the mast rail.

DANGER! Always secure the cutting head with a 5/16”

chain with at least 1900 lbs. working load capacity before
adjusting the mast pads. The cutting head may fall, causing
severe injury or death.

2. To adjust the spacing of the upper set of pads, lower the saw head until you can access
the upper slide pad adjustment bolts.

3. Loosen the upper locking bolts and turn the adjusting bolt as necessary to provide the
pad spacing described in Step 1.

4. Lower the saw head to the bottom of the vertical mast. Check the bottom set of four pads.

There should be a small gap between one of the outer pads and the mast rail. The gap
should be just wide enough to slide a business card through. The inner two pads should
be touching the mast rails.To adjust the spacing of the lower set of pads, raise the saw
head until you can access the lower slide pad adjustment bolts.

Sawmill Alignment HD92doc042701 5-5

 Sawmill Alignment
5 Saw Head Slide Pad Adjustment

FIG. 5-3

5. Loosen the lower locking bolts and turn the adjusting bolt as necessary to provide the pad
spacing described in Step 4.

CAUTION! Due to variations in the vertical mast, the pad

spacing may vary throughout the travel of the saw head.
Check the pad spacing at the top and bottom ends of the
mast only. Pads adjusted too tight will cause premature
up/down motor failure.

5-6 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Adjusting The Lower Track Rollers 5
5.5 Adjusting The Lower Track Rollers

Making these adjustments correctly will give you square cuts and accurate dimensions
across the width of your boards.

1. Move the saw carriage so the blade is over the rear main bed rail.

See Figure 5-4.

2. Check that both lower track rollers are touching the inside of the rail. The stop-blocks
should be within 1/16-1/8" (1.5-3.0 mm) of the rail.

3. If adjustment is needed, use the horizontal bolts to pull the track rollers to the rail. Adjust
the lower rollers until they both support the weight of the saw head evenly.

4. Use the vertical bolts to close the stop-block gap within 1/16-1/8" (1.5-3.0 mm) from the
rail.

FIG. 5-4

Sawmill Alignment HD92doc042701 5-7

 Sawmill Alignment
5 Adjusting The Lower Track Rollers
5. Repeat this step with the blade over the front main bed rail.

6. Move the carriage from the front of the mill to the back. Watch the lower rollers and stop
blocks. Make sure the gap between the rail and both stop-blocks never goes over the
1/16-1/8" (1.5-3.0 mm) tolerance.

7. Repeat, running the head from the back to the front of the mill. Make adjustments as
needed.

NOTE: Adjustments of the lower track rollers change the angle between the cutting head
and sawmill bed rails. Only small adjustments of the lower track rollers should ever be
needed.

8. Remove the blade guides, or adjust them so that they do not touch the blade.

9. Open the adjustable blade guide arm to within 1/2" (15 mm) of full open.

10. Move the carriage so that the blade is over the log clamp tube.

11. Raise the cutting head until the bottom of the blade is 17" (400 mm) above the clamp tube
by actual measurement with a tape or ruler.

See Figure 5-5.

FIG. 5-5

12. Fine tune the lower track roller adjustment so the blade is parallel within 1/32" (0.75 mm)
to the clamp tube while maintaining proper roller and stop block alignment outlined in
Steps 1-7.

5-8 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Adjusting Main Bed Rails To Blade 5
5.6 Adjusting Main Bed Rails To Blade

1. Move the clamp all the way out to flip the clamp down if neccesary. Adjust the clamp until
it is positioned under the outer blade guide.

2. Move the saw head until the blade is centered over the clamp.

3. Raise the saw head until the blade measures 14 1/2" (360 mm) from the top of the clamp.
Use a rule to determine the actual distance of the blade to the clamp.

See Figure 5-6.

FIG. 5-6

4. Move the saw head to center the blade over the rear-most bed rail.

Sawmill Alignment HD92doc042701 5-9

 Sawmill Alignment
5 Adjusting Main Bed Rails To Blade
See Figure 5-7.

Blade

15“ (375.0 mm) 15“ (375.0 mm)

Bed Rail

Clamping Bolt
Clamping Bolt

Adjustment Adjustment
Bolt Bolt

SM0064

FIG. 5-7

5. Measure the distance between the bottom of the blade and the bed rail at each end of the
bed rail. The bed rail should measure 15" (375 mm) (+1/32 [0.75 mm] -0) from the blade
at both ends of the rail.

6. Loosen the bed rail clamping bolts and turn the adjustment bolts to move the bed rails to
the blade if necessary.

7. Retighen the clamping bolts.

8. Without adjusting the saw head height, check all four main bed rails. Adjust them so that
all measure the same distance from the blade at both ends of the bed rail.

5-10 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Blade Guide Arm Vertical Adjustment 5
5.7 Blade Guide Arm Vertical Adjustment

1. Move the saw head so that the blade guide arm is directly over a bed rail.

2. Adjust the blade guide arm out to within 1/2" (15 mm) of full open.

3. Put a block of wood between the bed rail and the arm. Lower the carriage so that the arm
just rests on the block.

See Figure 5-8.

Turn outside rollers to raise

or lower end of blade guide arm SM0065B

FIG. 5-8

4. Adjust the blade guide arm in to within 1/2" (15 mm) of full closed. Put the block under the
arm as before.

5. When the arm is parallel to the bed, it will touch the block in the open and closed position
with no adjustment of the saw head height.

6. If the arm is too low in the closed position, loosen the lower outside roller and tighten the
upper outside roller (See Step 8.)

7. If the arm is too high in the closed position, loosen the upper outside roller and tighten the
lower outside roller (See Step 8.)

8. The rollers are mounted on cam bolts that raise or lower the arm when turned. To adjust
the rollers, loosen the nut against the blade housing. Locate the cam bolt head inside the
housing and turn until the arm is lowered or raised as needed. Recheck the arm in both
the open and closed positions. Repeat adjustments until the arm is the same distance
from the bed rail in the open and closed position.

9. The blade guide arm should be snug, but not too tight, in the rollers. You should be able to
move it in and out with firm hand pressure. There should be no side-to-side play.

Sawmill Alignment HD92doc042701 5-11

 Sawmill Alignment
5 Blade Guide Arm Horizontal Adjustment
5.8 Blade Guide Arm Horizontal Adjustment

1. Put the blade guide assembly back in the arm (if you took it out). Put the assembly back
so that the flanged collar on the roller is about 1/8" (3.0 mm) from the back of the blade
when the throat is 1/2" (15 mm) from full open.

2. Close the throat to within 1/2" (15 mm) from fully closed. Check to see that the flange is
the same distance from the back of the blade.

See Figure 5-9.

Flange equal
distance from
blade in open
and closed
positions

SM0067

FIG. 5-9

3. If adjustment is needed, the guide rollers can be adjusted in or out on the threaded
mounts to open or close the gap.

5-12 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Blade Guide Arm Horizontal Adjustment 5
See Figure 5-10.

Adjustment Nuts

Adjustment Nuts

SM0066

FIG. 5-10

4. Adjusting the outside two rollers (furthest from the arm motor) inward will cause the flange
to move away from the blade.

5. Adjusting the two outside rollers outward will cause the flange to move toward the blade.

6. Adjust until the roller flange is the same distance from the back of the blade in the open
and closed position.

Sawmill Alignment HD92doc042701 5-13

 Sawmill Alignment
5 Aligning The Blade Guides
5.9 Aligning The Blade Guides

Each Wood-Mizer sawmill has two blade guide assemblies that help the blade maintain a
straight cut. The two blade guide assemblies are positioned on the saw head to guide the
blade on each side of the material being cut.

One blade guide assembly is mounted in a stationary position on the drive side of the saw
head. This assembly is referred to as the "inner" blade guide assembly.

The other blade guide assembly is mounted on the idle side of the saw head. It is referred
to as the "outer" assembly and is adjustable for various widths of materials to be pro-
cessed.

Blade guide alignment includes four steps:

Blade Deflection

Blade Guide Vertical Tilt

Blade Guide Flange Spacing

Blade Guide Horizontal Tilt
Perform the blade guide alignment after you have aligned the blade on the wheels and
adjusted the blade and blade guide arm parallel to the bed rails. After blade guide align-
ment, check the scale indicator to make sure it is adjusted properly (See Section 5.20
Blade Height Scale Adjustment).

5-14 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Blade Deflection 5
5.10 Blade Deflection

Perform the following steps to achieve proper blade deflection with the blade guides.

1. Raise the carriage until the blade is 15" (375 mm) above a bed rail. Measure the actual
distance with a tape from the top of the rail to the bottom of the blade.

2. Install the blade guides. Make sure the two set screws shown are threaded into the blade
guide shaft until they touch each other.

See Figure 5-11.

Turn jam nuts to adjust

roller up or down

SM0068

FIG. 5-11

3. Loosen the bottom jam nut and tighten the top jam nut until the blade guide deflects the
blade down 1/4" (6.5 mm).

4. Repeat for the other blade guide.

NOTE: Be sure that the blade guard clears the blade on both guide assemblies. The
guard on the outer guide assembly should be checked with the arm all the way in and all
the way out.

Sawmill Alignment HD92doc042701 5-15

 Sawmill Alignment
5 Blade Guide Vertical Tilt Adjustment
5.11 Blade Guide Vertical Tilt Adjustment

Check that the blade guide does not tilt the blade up or down. A Blade Guide Alignment
Tool (BGAT) is provided to help you measure the vertical tilt of the blade.

1. Open the adjustable blade guide arm 1/2" (15 mm) from full open.

2. Clamp the alignment tool on the blade. Position the tool close to a blade guide roller. Be
sure the tool does not rest on a tooth or burr, and is lying flat on the blade.

See Figure 5-12.

Clip tool to blade

SM0069

FIG. 5-12

3. Measure the distance from the bed rail to the bottom of the tool.

NOTE: If the sawmill is equipped with stainless steel bed rail covers, be sure to measure
from the blade guide alignment tool to the top surface of the cover rather than the bed rail
tube.

4. Move the carriage so that the front end of the tool is positioned above the bed rail.

5. Measure the distance from the bed rail to the bottom edge of the tool.

6. Loosen one set screw at the side of the blade guide assembly.

7. Use the set screws shown to tilt the blade guide until the measurement from the bed rail
to the tool equals the first measurement taken at the center of the tool.

5-16 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Blade Guide Vertical Tilt Adjustment 5
See Figure 5-13.

Loosen jam nuts and turn screws

to tilt roller up or down

SM0070

FIG. 5-13

8. Move the carriage forward so the back end of the tool is over the bed rail.

9. Use the set screws shown to adjust the blade guide tilt until the measurement from the
bed rail to the tool equals the other two measurements taken.

10. Move the tool close to the other blade guide and repeat the previous steps.

NOTE: If major adjustments to blade guide tilt were made, remeasure the distance
between the blade and the bed rails to ensure the correct 1/4" (6.5 mm) blade guide
deflection. Adjust if necessary.

Sawmill Alignment HD92doc042701 5-17

 Sawmill Alignment
5 Blade Guide Spacing
5.12 Blade Guide Spacing

HINT: When adjusting blade guide spacing, loosen the top set screw and one side set
screw only. This will insure horizontal and vertical tilt adjustments are maintained when
the set screws are retightened.

1. Adjust the inner blade guide so the blade guide flange is approximately 1/16" (1.5 mm)
from the back of the blade.

2. Loosen one side and one top set screw shown. Tap the blade guide forward or backward
until properly positioned.

See Figure 5-14.

Loosen one top and

one side set screw

Adjust blade guide

to desired position
SM0071

FIG. 5-14

3. Retighten the two set screws.

4. Adjust the outer blade guide in the same way so the blade guide flange is approximately
1/8" (3.0 mm) from the back of the blade.

5-18 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Horizontal Tilt Adjustment 5
5.13 Horizontal Tilt Adjustment

1. Finally, both blade guides must be tilted horizontally. Adjust the blade guide arm half way
in.

See Figure 5-15.

FIG. 5-15

2. Place Blade Guide Alignment Tool against the face of the outer blade guide roller.

3. Center the tool on the roller and measure between the back edge of the blade and the
ruler at the end closest to the inner blade guide ("B").

4. Measure between the back edge of the blade and the other end of the ruler ("A").

5. The roller should be parallel to the blade (A=B) or tilted slightly to the left (A=B-1/4" [6
mm]).

6. Use the side set screws to adjust the horizontal tilt of the roller.

7. Repeat Steps 3 - 7 for the inner blade guide roller.

NOTE: Once the blade guides have been adjusted, any cutting variances are most likely
caused by the blade. See Blade Handbook, Form #600.

Sawmill Alignment HD92doc042701 5-19

 Sawmill Alignment
5 Horizontal Adjustment Of Side Supports
5.14 Horizontal Adjustment Of Side Supports

The side supports are used to clamp flats on a log to set the squareness of the next cut.
The cut will only be as square as the supports.

1. Swing the side support down.

2. Measure between the face of the support and the main bed tube. Make measurements at
both ends of the side support to make sure that it is parallel to the rail.

See Figure 5-16.

3. Use the two lower bolts to adjust the side support so B=A or +1/32" (0.8 mm).

4. Repeat for remaining side supports.

FIG. 5-16

5-20 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Vertical Adjustment Of Side Supports 5
5.15 Vertical Adjustment Of Side Supports

1. Place a flat board across the bed rails.

2. Swing a side support up so that it is vertical.

3. Pull back at the top of the support to eliminate slack as if a log were being clamped
against it.

See Figure 5-17.

4. Check the angle of each support with a square on the board.

5. The side support should be 90° to the bed rails or leaning forward 1/32" (0.8 mm). Loosen
the top adjustment bolt, adjust the side support, and retighten the bolt.

6. Repeat for the remaining side supports.

FIG. 5-17

Sawmill Alignment HD92doc042701 5-21

 Sawmill Alignment
5 Clamp Stop Adjustment
5.16 Clamp Stop Adjustment

1. Once the side supports are aligned, pivot them down to their horizontal position.

2. Tie a string across the face of the side supports.

See Figure 5-18.

3. Loosen the clamp stop bolts and adjust the clamp stop until it touches the string.

FIG. 5-18

5-22 HD92doc042701 Sawmill Alignment

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Aligning The Pivot Bed Rails 5
5.17 Aligning The Pivot Bed Rails

The two pivot bed rails are used when long cants are cut. (Long cants will often bend
down at the ends.) The pivot bed rails need to be adjusted to the same level as the main
bed rails.

To adjust the pivot bed rails:

1. Adjust the pivot rail 90° to the main bed tube.

2. With the saw head raised so the blade is 14 3/4" from the main bed rails, move the saw
head so that the blade is over one of the pivot bed rails.

3. Measure the distance from the top of the pivot rail to the bottom of the blade. Make this
measurement at each end of the pivot rail.

4. The two measurements should be the same as the main bed rails.

5. Use the bolt shown to adjust the height of the pivot rail.

See Figure 5-19.

FIG. 5-19

6. Use the set screws to adjust the angle of the pivot rail. Pivot the rail and check in 45°
positions as shown.

Sawmill Alignment HD92doc042701 5-23

 Sawmill Alignment
5 Aligning The Pivot Bed Rails
7. Adjust as needed until the pivot rail measures the same distance (±1/32) from the blade in
the 45°, 90°, and -45° positions.

CAUTION! Do not roll logs or large cants onto pivot bed

rails.

IMPORTANT! Logs and large cants will damage the pivot

! bed rails or cause misalignment!

5-24 HD92doc042701 Sawmill Alignment

 Sawmill Alignment
Sight Gauge Adjustment 5
5.18 Sight Gauge Adjustment

After adjustments to the bed rails and blade guides are complete, adjust the sight gauge
so that it accurately shows the position of the blade over the bed rails.

1. Move the saw head so the sight gauge is positioned over a bed rail.

2. Measure from the bed rail to the top of the sight gauge spring.

3. Loosen the nuts securing the sight gauge and adjust until the top of the spring is the same
distance from the bed rail as the blade.

4. Retighten the sight gauge nuts.

5. Bend the sight gauge bracket so the spring is parallel to the bed rails.

Sawmill Alignment HD92doc042701 5-25

 Sawmill Alignment
5 Saw Head Tilt
5.19 Saw Head Tilt

As the blade enters a wide log or cant, the outside of the saw head will drop down slightly.
To compensate for the drop, use the lower track roller horizontal bolts to raise the outside
of the saw head 1/16".

1. Move the saw head so the blade is positioned 14 3/4" (375 mm) above a bed rail.

2. Adjust the lower track roller horizontal bolts until the blade measures 14 13/16"
(376.5 mm) from the bed rail near the outer blade guide.

See Figure 5-20.

FIG. 5-20

5-26 HD92doc042701 Sawmill Alignment

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Blade Height Scale Adjustment 5
5.20 Blade Height Scale Adjustment

After the entire sawmill has been aligned and all adjustments made, check that the blade
height scale indicates the true distance from the blade to the bed rails.

1. Move the saw head so the blade is positioned 14 3/4" (375 mm) above the bed rails by
actual measurement with a rule.

See Figure 5-21.

2. View the blade height scale with eyes level with the indicator.

Blade Height
6 Indicator
Quarter
Scale 5 14
8 4

15
4
6 5

16
4
8
5
17 Inch
6 Scale
4
18
5

4
8
6

3H0007

FIG. 5-21

3. Loosen the indicator bracket mounting bolts and adjust the bracket until the indicator is
aligned with the 14 3/4" (375 mm) mark on the scale (+0 -1/32 [8 mm]).

Sawmill Alignment HD92doc042701 5-27

 INDEX

A C

alignment chain
blade guide 5-14 feed tension 3-20
blade installation 5-3 maintenance 3-9
frame setup 5-2 up/down tension 3-19
lower track rollers 5-7
main bed rails 5-9 clamping logs 2-16
pivot bed rails 5-23 clamp extension accessory 2-18
sawmill 5-1
slide pad adjustment 5-5 clutch/brake lever
operation 2-21

B
H
battery
troubleshooting problems 4-3 hydraulic
components 1-12
belt control operation 2-11
up/down tension 3-22 fluid level 3-14
hoses 1-14
blade schematic 1-10, 1-11
breakage, troubleshooting 4-1 troubleshooting problems 4-9
deflection 5-15
installation 2-6
tensioning 2-7 L
tracking 2-8
leveling logs 2-17
blade guide
horizontal tilt 5-19 loading logs 2-15
maintenance 3-2
spacing 5-18
vertical tilt 5-16 O
blade guide arm operation
operation 2-20 edging 2-25
sawing 2-24
brake strap
tension 3-12

Index HD92doc042701 i
INDEX

P T

power feed tensioner

mechanical troubleshooting test 4-15 maintenance 3-10
operation 2-23
preliminary troubleshooting test 4-14 track
speed adjustment 2-22 maintenance 3-5
troubleshooting problems 4-5
troubleshooting 4-1
electrical problems 4-3
R hydraulic problems 4-9
power feed problems 4-5
retrofits sawing problems 4-1
blade guide set screws 3-2
fuse block 3-22 turning logs 2-16

S U

saw head up/down

tilt 5-26 operation 2-19
sight gauge operation 2-26
scale troubleshooting problems 4-3
blade height adjustment 5-27
blade height operation 2-27
inch height 2-28 W
quarter inch 2-29
water lube
setup operation 2-30
portable sawmill 2-2
sawmill for operation 2-5
stationary sawmill 2-1

side supports
horizontal adjustment 5-20
vertical adjustment 5-21

sight gauge
adjustment 5-25

switch
power feed & up/down maintenance 3-8

ii HD92doc042701 Index