22” STT FELLING HEAD

S/N 950001 – 960634

OPERATOR’S MANUAL
22” STT DISC SAW FELLING HEAD
OMF276738

CALIFORNIA
Proposition 65 Warning

Diesel engine exhaust and some of its constituents

are known to the State of California to cause cancer,
birth defects and other reproductive harm.

Worldwide Construction and Forestry Division

English
Table of Contents
Section Description

1 Introduction

2 Warranty

3 Safety Rules

4 Description

5 Operation

6 Lubrication and Maintenance

7 Hydraulic System

8 Electrical System

9 Trouble Shooting

10 Equipment Specifications

11 Miscellaneous

12 Alphabetical Index

i
Table of Contents
Section 1 - Introduction
i - iv Table of Contents
1.1 Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.2 Model and Serial Number Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.3 Non-approved Field Product Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 3

Section 2 - Warranty
2.1 Warranty Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2

Section 3 - Safety Rules

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.2 Safety Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.3 Understanding Signal Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.4 General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
3.5 Operating Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 6
3.6 Servicing Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 7
3.7 Fire Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 10

Section 4 - Description
4.1 Equipment Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
4.2 Saw Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 3
4.3 Saw Drive Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 4

Section 5 - Operation
5.1 Basic Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
5.2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 5

ii
Table of Contents
Section 6 - Lubrication and Maintenance
6.1 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 2
6.2 Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 3
6.3 Disc Blade Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 14
6.4 Disc Blade Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 15
6.5 Tooth Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 16
6.6 Tooth Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 16
6.7 Carbide Tip Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 17
6.8 Disc Blade & Tooth Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 19
6.9 Disc Blade Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 21
6.10 Disc Blade Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 23
6.11 Drive Shaft Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 25
6.12 Drive Shaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 26
6.13 Drive Shaft Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 30
6.14 Unscheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 37

Section 7 - Hydraulic System Schematics

7.1 Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 2
7.2 Pressure Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 3
7.3 Saw Motor Cross Section 7 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 6

Section 8 - Electrical System Schematics

8.1 Saw Speed Sense Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 2
8.2 Saw Speed tachometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 4

Section 9 - Trouble Shooting

9.2 Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 2

iii
Table of Contents
Section 10 - Equipment Specifications
10.1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 2

Section 11 - Miscellaneous
11.1 Measurement Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 2
11.2 Wood Measurement Equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 4
11.3 Weights of Commercially Important Woods . . . . . . . . . . . . . . . . . . . . . . . . 11 - 5
11.4 General Bolt Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 6

Section 12 - Index
12.1 Alphabetical Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1

iv
Section 1
Introduction

1. Introduction

1.1 Foreward 1-2

1.2 Model and Serial Number Record 1-3
1.3 Non Approved Field Product Changes 1-4

1-1
 Section 1
Introduction

1.1 Foreword
To assist the operator in becoming familiar with the many features of the 18", 20", and 22" Felling Head, and thereby
quickly become proficient in the operation and periodic maintenance procedures, this manual is provided with
detailed operating and service instructions as well as safety information and equipment data.

Throughout this manual, references are made to the front, rear, left, and right side of the machine. Consider the front
from a seated position in the operator’s seat with the felling head directly in front of you and the felling head arms as
being left and right.

Where applicable throughout the text, "Safety Alert" symbols have been used to indicate important
safety measures. Read carefully, understand, and follow these instructions to prevent hazardous
situations that could lead to risk of personal injury.

The instructions and procedures in this manual cover the felling heads with the most commonly used options;
therefore pictorial presentation in some areas may vary slightly from the actual machine. This variation, however,
does not have any impact on the accuracy of the written information.

The information contained in this manual is current at the time of publication; however, continuing improvement may
result in changes to the machine which are not covered. Should information regarding such changes or further
information on the machine be required, please contact your Koehring Waterous dealer.

1-2
Section 1
Introduction

1.2 Model and Serial Number Record

In order to identify your machine and its components correctly when communicating with your Koehring Waterous
dealer, please record the model and serial numbers below and refer to them when ordering service parts.

Felling Head Model No:

Serial No:

Hydraulic Motor Part No:

Serial No:

Saw Blade Part No:

Saw Blade Serial No:

Clamp Cylinder Part No:

Wrist Cylinder Part No:

1-3
 Section 1
Introduction

1.3 Non-approved Field Product Changes

Changes of any kind to this Koehring Waterous product NO OTHER PERSON IS AUTHORIZED TO GIVE
including the fitting of any unauthorized attachments SUCH APPROVAL.
could affect the integrity of the product, or its ability to Koehring Waterous Attachment Products disclaims
perform as designed or intended. responsibility for any situation that may arise as a result
of unauthorized change to its product, such as the use
of a non-approved Disc Saw Blade (cutting device)
being installed on a Koehring Waterous Disc Saw
Felling Head. If any person or organization modifies or
contributes in any way to unauthorized modification, the
person or organization will be deemed to have assumed
the risk involved with such modification and may be
IT IS KOEHRING WATEROUS ATTACHMENT deemed negligent in creating a dangerous situation
PRODUCTS POLICY THAT NO CHANGES ARE TO BE
MADE TO ITS PRODUCTS INCLUDING DELETIONS
OR ADDITIONS OTHER THAN A KOEHRING
WATEROUS APPROVED OPTION FITTED IN THE
FACTORY APPROVED MANNER.

In particular, this applies to a Koehring Waterous Disc resulting from such action.
Saw Felling Head used in conjunction with a Disc Saw
Blade (cutting device) that has been designed and Where changes are made without the official approval,
manufactured by Koehring Waterous Attachment as described above, and Koehring Waterous Attachment
Products. Products becomes involved in suit arising out of such
change, Koehring Waterous Attachment Products will
protect its interest by taking whatever action is

Options or changes are only officially approved in the

following form:
appropriate.
a) Standard options for that product shown or listed on a
current, printed specifications sheet, price list, parts Failure to adhere to this policy NULLIFIES and VOIDS
manual, or product literature issued by Koehring both the product warranty policy and the certification on
Waterous Attachment Products. any safety items installed on the modified machine or
attachment.
b) Clearly specified options or product changes
approved in writing by the Koehring Waterous
Non-approved product changes also nullify warranties
given to Koehring Waterous Attachment Products by its
component manufacturers.

Product Integrity Manager.

Koehring Waterous Attachment Products

1-4
 Section 2
Warranty

2. Warranty

2.1 Warranty Certificate 2-2

2-1
 Section 2
Warranty

2.1 Warranty Certificate - Koehring Waterous Felling Heads

Timberjack Forestry Attachments warrants each new

Koehring Waterous Felling Head to be free of problems
resulting from defective material and workmanship under This warranty may be denied if repairs or alterations to a
proper use and service for a period of six (6) months or Koehring Waterous Felling Head has been made by
fifteen hundred (1500) hours, whichever first occurs, persons or firms not specifically approved by Timberjack
following date of delivery of the machine or attachment Forestry Attachments so as in Timberjack Forestry
to the original retail customer (user) provided that the Attachments’ opinion to adversely affect in any way the
prescribed pre-delivery, start-up and follow up stability or reliability of such felling head. The installation
inspections have been carried out. A warranty in such machine of any product or attachment not
registration form must be completed and on file at specifically approved by Timberjack Forestry
Timberjack Forestry Attachments to validate all aspects Attachments may also result in denial of warranty.
of this warranty.
Liability or obligation on the part of Timberjack Forestry
Attachments for damages, whether general, special, or
for negligence and expressly including any incidental
and consequential damages, is hereby disclaimed.
Timberjack Forestry Attachments’ sole obligation under Timberjack Forestry Attachments’ obligation to repair or
this warranty is limited to the repair or replacement replace shall be the limit of its liability under this
without charge at Timberjack Forestry Attachments’ warranty and the sole and exclusive right and remedy of
factory, warehouse, or approved repair shop, any part or the user.
parts which Timberjack Forestry Attachments inspection
shall disclose to have been defective in material or This warranty is expressly in lieu of all other warranties,
workmanship. express or implied, written or oral, including without
limitation, any implied warranties of merchantability or of
fitness for a particular purpose.

The distributor agrees to extend only the above warranty

to its customers. In the event the distributor extends to
Parts which show evidence of neglect, overload, abuse, its customer any additional warranty such as by
accident, inadequate maintenance or unauthorized extending the scope or period of warranty or undertaking
alteration are not covered by this warranty. a warranty of fitness for any particular purpose or any
other obligation not encompassed in Timberjack
Forestry Attachments’ warranty, then the distributor shall
be solely responsible therefor and shall have no
recourse against Timberjack Forestry Attachments with
Timberjack Forestry Attachments is not responsible for respect thereto.
any costs associated with delivery of the machine or
attachment to an authorized repair shop, nor any costs
associated with delivery of parts to make the repairs. This warranty may not be changed, altered, or modified
in any way except in writing by the Manager of
Engineering of Timberjack Forestry Attachments.

This warranty, in its entirety, does not cover

maintenance items on Koehring Waterous felling heads,
which includes, but is not limited to lubricating Timberjack Forestry Attachments
grease and oils. Woodstock, Ontario, Canada
August, 1993

2-2
Section 3
Safety Rules 09/1997

3. Safety Rules

3.1 General 3-2

3.2 Safety Symbol 3-2
3.3 Understanding Signal Words 3-2
3.4 General Safety Precautions 3-3
3.5 Operating Safety Precautions 3-6
3.6 Servicing Safety Precautions 3-7
3.7 Fire Prevention 3 - 10

3-1 20STT3A1
 Section 3
09/1997 Safety Rules

3.1 General
Should there be any information or instructions in this
manual that are not in compliance with local laws and
regulations in force in the country or region where this
equipment is operated, the local laws and regulations
must take precedence.

This equipment should not be operated or maintained by

personnel other than those who have been thoroughly
trained on this or similar type equipment.

As the owner/maintainer ensure that you become

familiar with all occupational safety regulations
pertaining to forest machinery as well as all safety
instructions pertaining to this equipment. Observe the
instructions provided in this manual and on all hazard
and information decals on the equipment.

3.2 Safety Symbol

This safety-alert symbol is used throughout the manual
to call your attention to areas in which carelessness or
failure to follow specific procedures may result in
personal injury and/or component damage or
malfunction.

3.3 Understanding Signal

DANGER Words
DANGER identifies the most serious hazards where
failure to follow listed procedures would result in a high
probability of death or serious injury.
WARNING
WARNING denotes a hazard exists which can result in
serious injury or death if proper precautions are not
taken.

CAUTION is used in areas where failure to follow listed

CAUTION procedures may cause personal injury, component
damage or subsequent malfunction.

20STT3A1 3-2
Section 3
Safety Rules 09/1997

3.4 General Safety Precautions

Timberjack Forestry Attachments’ policy is to produce
products that are safe and reliable. However, even when
using well engineered equipment, there will always be
an element of risk in heavy-duty equipment operation.

To minimize the risks and promote safety at all times,

this section of the Parts and Service Manual details a
number of safety rules which should always be followed
and obeyed.

Study all the safety messages in this manual and on the

felling head carefully.

You must be fully trained to operate this equipment.

Know the capabilities and the limitations of the
equipment. Learn the most efficient operating
techniques.

Do not let an untrained person operate the felling head.

Use recommended protective clothing and safety

devices such as gloves, safety boots, safety hat,
goggles, and ear protection when necessary.

These safety rules highlight both general and specific

measures the operator should be familiar with and
adhere to. More specific measures are illustrated with
pictograms which may also be attached to the
saw head in locations pertinent to their respective
message. Keep safety signs in good condition.
Repair or replace damaged signs.

WHEN IT COMES TO SAFETY, NOTHING WILL EVER

REPLACE A CAREFUL OPERATOR.

3-3 20STT3A1
 Section 3
09/1997 Safety Rules

3.4 General Safety Precautions

Wear a suitable hearing protective device such as
earmuffs or ear plugs to protect against noise.
Prolonged exposure to loud noise can cause impairment
or loss of hearing.

Inspect the saw blade disc for runout and teeth condition
for excessive wear or damage daily and also
immediately after hitting a rock or other foreign material.

Check the blade daily for fatigue cracks.

NEVER REPAIR A BLADE BY WELDING.
Replace defective components immediately.

Check tooth fastener torque daily.

Keep a first aid kit in an easily accessible location at all

times.

20STT3A1 3-4
Section 3
Safety Rules 09/1997

3.4 General Safety Precautions

Operate the felling head only when physically fit and not Approach an area where overhanging electrical
under the influence of alcohol or drugs. powerlines are present with extreme caution.
Serious injury or death by electrocution can result if the
machine or any of its attachments are not kept at a safe
distance from these lines.

Inspect the felling head daily for signs of damage, Maintain a distance of 10 ft (3 m) between the machine
unusual wear, fatigue cracks or faulty operation. or boom and any power line carrying up to 50,000 volts
or less.

Make sure that other personnel remain at least 300 ft Powerlines carrying more than 50,000 volts require a
(100 m) away from the felling head. safety distance of 10 ft (3m) plus 1/2 inch (12.7 mm) for
each additional 1,000 volts above the 50,000 volt level.
Never allow anyone to cross in front of the saw opening. If state/province, local or job site regulations require
even greater safety distances than stated above, adhere
strictly to these regulations for your own protection.

Observers should stand on the opposite side of the Do not approach the felling head unless the disc saw
machine from where chips are being exhausted from the blade has come to a complete stop and the engine has
saw opening. been shut down.

When moving the machine, watch that enough Comply with instructions in this manual and also your
clearance is available on both sides and above the company’s regulations for the operation of this felling
felling head. Extra clearance may be required head.
particularly where the ground is uneven.

3-5 20STT3A1
 Section 3
09/1997 Safety Rules

3.5 Operating Safety Precautions

Prior to commencing work, check all equipment controls Turn the saw controls on only when the engine is idling.
and ensure that the felling head responds correctly.

Maintain a safe operating distance between the Wait until the saw blade achieves full speed before
equipment and other personnel. Never swing the boom, cutting the tree.
attachment, or load over the heads of bystanders.

Raise the felling head before moving the vehicle. Never operate the saw blade at higher speed than the
When traveling, keep it high enough to clear stumps. maximum upper limit.

Adhere strictly to all regulations at the work site

Stop the saw blade when traveling to or from the felling pertaining to the operation of this equipment.
site.

Shut the saw off immediately and stop the blade if an

imbalance occurs. Do not operate the saw blade in an
unbalanced condition.

20STT3A1 3-6
Section 3
Safety Rules 09/1997

3.6 Servicing Safety Precautions

When servicing or repairing equipment, shut the engine
down, and disconnect the negative (-) battery cable from
the battery, or install a lockout tag.

Before performing maintenance or repair work on any

equipment, consult the manufacturer’s instruction
manual and follow recommended procedures.

WARNING
Hydraulic fluid under pressure can penetrate the
skin and cause serious personal injury, blindness,
or death. If any fluid is injected into the skin, it must
be surgically removed within a few hours by a
doctor familiar with treating this type of injury.

Fluid leaks under pressure may not be visible. When

searching for leaks, wear work gloves and use a piece
of cardboard or wood.

Never use your bare hands!

Wear safety goggles for eye protection.

Pressure can be maintained in a hydraulic system long

after the power source and pump have been shut down.
Lower the implements to the ground and relieve trapped
pressure before performing work on components, or
disconnecting any hoses.

3-7 20STT3A1
 Section 3
09/1997 Safety Rules

3.6 Servicing Safety Precautions

Keep your hands, feet, head, and loose clothing away
from power driven parts.

Do not change any pressure or relief setting unless

authorized instruction has been obtained.

Install the blade guard and side plate over the exhaust
window when performing hydraulic checks and blade
speed adjustments.

Never work under the felling head when the head is in a

raised position.

Use the proper tool for the job. Repair or replace worn or
damaged tools including lifting equipment immediately.

Use extreme caution when draining hot fluids.

Splashing hot fluid can cause serious burns.

20STT3A1 3-8
Section 3
Safety Rules 09/1997

3.6 Servicing Safety Precautions

Work in a ventilated area. If it is necessary to run an
engine in an enclosed area, use an exhaust pipe
extension to remove toxic exhaust fumes. Run the
engine only when it is necessary for testing or
adjustments.

If you don’t have an exhaust pipe extension, either work

outside, or open the shop doors.

Dispose of fluids properly. Do not pour fluids into the

ground, stream, pond or lake.

Before draining any fluids, know the proper way to

dispose of them.

Observe local environmental protection regulations

when disposing of filters, batteries, fuel, coolant, oil,
brake fluid, and other harmful waste.

3-9 20STT3A1
 Section 3
09/1997 Safety Rules

3.7 Fire Prevention

When working in a forest environment, it is impossible to
prevent combustible debris from collecting in tight
corners of the machine. This debris, in itself, may not
cause a fire; however, when mixed with fuel, oil, or
grease in a hot or confined place, the danger of fire is
very much increased.

To reduce the chance of a fire starting, follow these

instructions:

• Clean dust and debris from the machine regularly.

• Clean the radiator and oil cooler regularly to

ensure components are maintained at efficient
working temperatures.

• Inspect the machine daily for potential fire hazards

and make any necessary repairs immediately.

• Inspect electrical wiring and connections, fuel and

hydraulic hose runs to ensure they are secure and
not rubbing against other components.

• Clean up any excess grease and oil accumulation

and spillage immediately.

• Use only nonflammable solutions for cleaning the

machine or components.

• Store rags and other combustible materials in a

safe, fireproof location.

• Before starting repair work, such as welding, the

surrounding area should be cleaned and a fire
extinguisher should be close by.

• Maintain a charged fire extinguisher on the vehicle

at all times and KNOW HOW TO USE IT.

20STT3A1 3 - 10
 Section 4
Description

4. Description

4.1 Nomenclature 4-2

4.2 Saw Drive Components 4-3

4.3 Saw Drive Description 4 - 4

4-1
 Section 4
Description

4.1 Nomenclature

1. Upper Clamps Cylinder

2. Upper Clamps
3. Lower Clamps Cylinder
4. Lower Clamps
5. Saw Drive Hydraulic Motor
6. Butt Plate
7. Disc Saw Blade
8. Saw Blade Guard
9. Wrist Cylinder
10. Wrist Assembly

4-2
 Section 4
Description

4.2 Saw Drive Components

1. Saw Motor
2. Pump (See Carrier Manual)
3. Control Valve (See Carrier Manual)
4. Bypass Check Valve
5. Case Drain Line
6. Return Line "B" Port
7. Inlet Line "A" Port
8. Magnetic Speed Sensor (Tachometer Connection)

6
6 7
7

4-3
 Section 4
Description

4.3 Saw Drive Description

Motor
The saw drive shaft is driven by a bent-axis piston type
variable displacement motor. The motor is mounted to
an adapter plate and coupled to the drive shaft by a
splined coupler.

Pump
Hydraulic oil for the saw drive is supplied by a machine
mounted pump.

Control Valve
Flow from the pump is directed to motor port ’A’ via a
machine mounted control valve.

Refer to Carrier Operator Manual for pump and control

valve description.

Bypass Check Valve

(free wheel check valve) is installed in parallel circuit
with the motor between the high pressure and return
hydraulic lines. Oil is blocked from going to tank during
normal operation. When the engine rpm drops due to
hydraulic loads, the engine stalls, or the saw motor is
shut off, while the blade is rotating, return oil will open
the check valve and allow oil to go to the pressure side
of the motor. This bypassing oil prevents the motor from
cavitating.

4-4
 Section 5
Operation

5. Operation

5.2 Basic Operation 5-2

5.3 Operating Instructions 5-5

5-1
 Section 5
Operation

5.2 Basic Operation

1. Principal Of Operation:

Koehring Waterous disc saw felling heads are based on

a concept of continuous high speed blade motion for
felling trees. The felling head is powered through the
tree, then clamping the tree(s) to the head after the
cutting is complete.

Depending on the felling head model and carrier

application, felling is accomplished by:

1. Machine travel "Drive to Tree" mounted on front end

carrier applications, or

2. "Swing to Tree" by using a combination of stick, tilt

and hoist control functions.

2. Blade Feeding Speed :

A general rule of thumb is approximately 2 feet/second

feed speed.

Feeding too slowly will cause unnecessary blade friction

and stall down.

Feeding too quickly may result in fibre pull or damage to

the tree stem on the exit side.

5-2
 Section 5
Operation

5.2 Basic Operation

3. General Method Of Operation:

1. Position the felling head tilted slightly forward (5°)

when approaching the tree.
Ensure the saw blade is at sufficient operating speed.

2. Make sure the felling head is in line with the tree.

Most felling heads that are installed on a boom can
be lined up using the wrist control.

3. Feed the saw blade through the tree in a smooth

continuous motion.

4. As the cut is being made, begin to close both sets of

clamp arms. Immediately after the cut is complete,
close the clamp arms tightly.

Important:
Do not clamp the tree until after the cut is complete.

Do not hold the clamp arm controls in the energized

position after the arms are fully closed.

5. Once the tree is completely severed, raise the felling

head off the stump to avoid blade stall down.

5-3
 Section 5
Operation

5.2 Basic Operation

4. Stopping The Saw Blade:

The saw blade will continue to "free-wheel" for several

minutes after being shut off.

When it is necessary to stop the blade quickly, carefully

lower the disc onto a stump. The saw blade can be
brought to a complete stop in a matter of seconds.

5-4
 Section 5
Operation

5.3 Operating Instructions

22" Felling Head

1. Both the upper and lower clamp arms are open.

Advance the felling head by boom/stick extension or
by moving the machine forward and cut the first tree.

Important!
Do not operate any other function while the saw blade is
cutting the tree. Tilting or moving the felling head before
the stem is cut through can damage the saw blade.

2. Close both upper and lower clamp arms immediately

on the tree. Advance to the next tree.

3. Open the upper clamp arms.

The lower clamp arms hold the first tree.

Cut the second tree.

5-5
 Section 5
Operation

5.3 Operating Instructions

22" Felling Head

4. Close the upper clamp arms on the second tree. The

lower clamp arms slide out, spring open, and then
close. Advance to the next tree.

5. Open the upper clamp arms.

The lower clamp arms now hold both trees.

Cut the third tree.

6. When travelling, close both upper and lower clamp

arms on the trees.

5-6
Section 6
Lubrication & Maintenance

6. Lubrication and
Maintenance

6.1 Maintenance Schedule 6-2

6.2 Maintenance Procedures 6-3
6.3 Disc Blade Description 6 - 14
6.4 Disc Blade Inspection 6 - 15
6.5 Tooth Removal 6 - 16
6.6 Tooth Assembly 6 - 16
6.7 Carbide Tip Replacement 6 - 17
6.8 Disc Blade & Tooth Data 6 - 19
6.9 Disc Saw Blade Removal 6 - 21
6.10 Disc Saw Blade Installation 6 - 23
6.11 Drive Shaft Components 6 - 25
6.12 Drive Shaft Removal 6 - 26
6.13 Drive Shaft Assembly 6 - 30
6.14 Unscheduled Maintenance 6 - 37

6-1
 Section 6
Lubrication & Maintenance

6.1 Maintenance Schedule

First 25 Hours

1. Check all bolt torques.

2. *Lubricate all grease fittings.
3. Check saw shaft end play.
4. Check all hydraulic hoses, and fittings.
5. Check saw blade rpm.
6. Check hydraulic pressure setting.

8 Hours (Daily)

7. Check saw shaft end play.

8. Check saw tooth condition.
9. Check saw disc and teeth for damage.
10. Check lower flange bolt torques.
11. *Lubricate all grease fittings.

175 Hours (Monthly)

12. *Lubricate Saw Shaft & Motor Coupling

500 Hours

13. Inspect felling head for damage.

14. Repeat Items 1 through 6
15. Repeat Items 8,9, 10.

Unscheduled Maintenance

16. Adjust saw shaft end play.

*Use lithium based EP2 Grease containing 3% to 5%

molybdenum disulfide.

6-2
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

6.2.1 General

DANGER
Turn off the saw controls and switch off the master
disconnect switch except when checking hydraulic
pressures or blade speed. Support the felling head.
Never work under the felling head in a raised
positon.

Wear work gloves and keep your fingers clear.

Failure to follow these safety precautions can lead

to risk of serious injury.

Block the tracks to prevent accidental movement.

Install the blade guard.

Lock the blade to prevent free rotation by installing the

3/4" - 10x6" bolt through the hole in the guard and
thread the nut on the bolt.

Close the clamp arms and use the hoist, stick and tilt
controls to tip the felling head forward until it rests face
down on the ground. Shut the engine off.

6-3
 Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

6.2.2 Tools Required

• 3/4" Torque Wrench - 0-600 ft. lbs.

• 1/2" Torque Wrench - 0-150 ft. lbs.
• Dial Indicator with Magnetic Base.
• Photo or Vibration Tachometer.
• 0-5000 psi. Gauge.
• 6mm Allen Key - Motor Speed Adjustment.
• 19mm Combination Wrench - Motor Speed
Adjustment.
• 3mm Allen Key - Motor B of R Adjustment.
• 10mm Combination Wrench - Motor B of R
Adjustment.
• 5/8" Allen Socket - Saw Blade Mounting.
• 1/2" Square Drive - Saw Shaft Lubricating Plug.
• 5/8" Round Punch - Install Shaft Seal.
• Flow Meter with Pressure Regulator and
Temperature Gauge.
• Locknut Wrench - Make from 1/2"-250 ASTM
[A514B] or T1 TYPE ’A’ or CHT 100 C or SAE
4021-100Q plate as per dimensions shown in
illustration 10362a.
• 15° Metal Wedge 10" Long.
• 1" x 8 UNC-28 Eye Bolt For Saw Blade Lift.

6.2.3 Maintenance 1st 25 Hours

1. Check All Bolt Torques.

Saw Blade Lower Flange Plate Bolts

Saw blade lower flange plate bolt ( 3/4" x 16UNF)
torque 280 - 320 ft. lbs. (380-435 Nm)
(380 - 435 Nm

Lower Guard Plates

Lower guard plate torque 165 ft. lbs (locknut end) (3/4" -
10 UNC). (225 Nm).

6-4
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

1. Check All Bolt Torques.

Saw Tooth Bolts

Saw tooth bolt (1/2"- 20 UNF) torque to 85 ft. lbs.

Remove the guard to check the saw tooth bolts.

Install the guard after checking all of the teeth.

Saw Drive Motor Mounting Bolts

Saw drive motor bolt (3/4"- 10 UNC) torque 200 - 220 ft.
lbs. (270-300 Nm)

6-5
 Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

1. Check All Bolt Torques.

Upper Clamp Arm Pin Retainers

Torque pin retainer bolts (3/4"-10 UNC) 150 - 180 ft. lbs.
(210 - 250 Nm).

Lower Clamp Arm Pin Retainers

Torque pin retainer bolts (3/4"-10 UNC) 150 - 180 ft. lbs.
(210 - 250 Nm).

6-6
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

1. Check All Bolt Torques.

Wrist Tilt Cylinder Pin Retainers

Torque pin retainer bolts (3/4"-10 UNC) 150 - 180 ft. lbs.
(210 - 250 Nm).

Wrist Bearing Retainer Bolts & Locknuts

Torque (2) bolts and locknuts (1" - 14 UNC) to 670 - 690
ft. lbs (900 - 930 Nm).

Wrist Attatchment to Bearing Locknuts

Torque locknuts (1.25" - 12 UNC) to 940 - 960 ft. lbs
(1270 - 1300 Nm).

6-7
 Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

A
2. Lubricate all grease fittings.

Item No. of Location

Fittings

A 12 Purge Upper and Lower Clamp Arms

B

B 2 Saw Shaft Bearings. One shot of

grease for each hour of operation.

Use lithium based EP2 Grease containing 3% to 5%

molybdenum disulfide.

Wrist Attachment Bearing

Purge 7 fittings.

Wrist Cylinder
Purge 2 fittings.

6-8
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

3. Check saw shaft end play.

DANGER
Wear work gloves and keep your fingers clear.

Failure to follow these safety precautions can lead

to risk of serious injury.

Grasp the blade and lift up and down several times.

Check for any movement.

Rotate the blade slowly 90o and repeat the same

procedure.

If excessive end play is found, adjust the bearings as

described on page 6 - 37.

4. Check Hoses and Fittings

Inspect the hoses and fittings for signs of damage or

leaks.

6-9
 Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

5. Check Saw Blade R.P.M.

With the guard in place and saw blade free to rotate,

turn the saw On and bring the engine speed up to full
rpm.
See specifications for applicable blade speed.

If speed adjustment is necessary:

(a) turn the saw speed adjustiing screw out (counter

clockwise) to increase blade speed.

(b) turn the saw speed adjusting screw in (clockwise) to

decrease blade speed.

6. Check Hydraulic Pressure Setting

Quick Saw Circuit Pressure Check.

Install a 0 - 5000 psi gauge in the feller buncher saw
valve test port, or "G" port on the saw motor (a test
fitting is provided on L.H. side of motor for gauge
installation).

Start the engine and move throttle to maximum speed.

Have an assistant turn the saw motor on and record the

pressure settings on the gauge:

Approximate Elapsed Time

Gauge Reading

See Specifications First 10 seconds Main Pump Relief or P.O.R. setting

See Specifications Next 12 - 15 seconds Begin of Stroke setting (saw motor)

800-1500 psi 25 - 35 seconds Saw Blade at Full rpm

Note: Refer to the carrier and saw head specification sheets (section 10) for specific pressure setting.

6 - 10
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

6. Check Hydraulic Pressure Setting

Begin of Stroke Pressure reading is to specifications

no further adjustment is required.

Begin of Stroke Pressure reading is too low -

Loosen the jam nut and turn the Begin of Stroke
adjusting screw out slightly (counter clockwise).
Tighten the jam nut and re-check the adjustment.

Begin of Stroke Pressure reading is too high-

Loosen the jam nut and turn the Begin of Stroke
adjustment screw in slightly (clockwise).
Tighten the jam nut and re-check the adjustment.

Remove the test gauge and install the motor guard.

7. Check saw shaft end play.

DANGER
Wear work gloves and keep your fingers clear.

Failure to follow these safety precautions can lead

to risk of serious injury.

Grasp the blade and lift up and down several times.

Check for any movement. Rotate the blade slowly 90o
and repeat the same procedure.

If excessive end play is found, adjust the bearings as

described on page 6 - 37.

6 - 11
 Section 6
Lubrication & Maintenance

6.2Maintenance Procedures
8. Check Saw Tooth Condition.

Check that tooth mounting bolts are torqued to

specifications.

Inspect each tooth for cracks or damage.

Replace any damaged teeth.

The two cutting edges of the tooth should be:

(a) The furthest point from the disc centre.
(b) The widest point between the top and bottom of
the tooth.
This rake angle will allow the rest of the tooth and
blade to pass within the cut.

The condition of tooth cutting edges is indicated by

several methods:

1. Excessive loss off blade speed or stalling.

2. Excessive smoking.

3. Rough cutting surface.

4. Excessive tooth temperature.

9. Check Saw Disc Condition.

Inspect the disc for signs of cracks or damage.

Replace a damaged disc immediately.

Welding is not allowed on a saw blade disc.

Check that the disc rotates freely without any wobble or

movement. If necessary check the saw shaft end play as
described on page 6 - 9. If saw disc runout exceeds
.100", consult your Koehring Waterous dealer.

6 - 12
Section 6
Lubrication & Maintenance

6.2 Maintenance Procedures

10. Check Saw Blade Lower Flange Bolt Torques.

Lower flange plate bolt torque ( 3/4" x 16UNF) torque

280 - 320 ft. lbs. (380-435 Nm).

11. Lubricate All Grease Fittings.

Lubricate all grease fittings.

See Item 2 for specific locations. (Page 6 - 8)

12. Lubricate Saw Shaft and Motor Coupling

Remove the plug and pump eight shots of lithium based

EP2 grease. Replace the plug after greasing.

13. Inspect Felling Head For Damage.

Carefully check the felling head for signs of damage,

cracks, or unusual wear.
Repair or replace components if necessary.

6 - 13
 Section 6
Lubrication & Maintenance

6.3 Disc Blade Description

The Saw Blade used on 22 inch Felling Heads has a 56
inch diameter cutting circle.

Serial Number Location:

Each disc saw blade has the serial number stamped on
in three specific locations.

A Approximately six inches from the centre of the blade

(top side).

B Approximately half way between the centre and the

outside edge of the blade (top side).

C On the outer edge between two of the teeth.

Carbide Tipped Blade:

1. Saw Disc
2. Saw Tooth - Carbide Tipped
3. Carbide Tip
4. Tooth Mounting Bolt
5. Silver Solder

6 - 14
 Section 6
Lubrication & Maintenance

6.3 Disc Blade Description

Hardened Tooth Blade:

1. Saw Disc
2. Saw Tooth - Hardened
3. Tooth Mounting Bolt

6.4 Disc Blade Inspection

1. Inspect the saw blade regularly before starting a shift
and periodically throughout the day.

2. Check the tooth mounting bolts torque.

See page 6 - 5 for correct torque specifications.

3. Inspect the teeth and blade for cracks or other signs

of damage. Repair or replace any damaged teeth A
immediately.

4. Check the cutting edges of each tooth. If hardened B

teeth (A) are dull, rotate them.

Carbide tipped teeth (B) should be checked for

wear.

When carbide tip wear has extended as far as the

tooth body, replace the tip.

6 - 15
 Section 6
Lubrication & Maintenance

6.5 Tooth Removal 6.6 Tooth Assembly

Important! Important
Do not hammer on the side of the saw tooth. Do not re-use bolts when replacing teeth.

Peening marks from hitting the tooth will cause side 1. Ensure that all mating surfaces are clean and free
loading (on the tooth and the mounting hole) when the
damaged surface of the tooth is rotated against the
blade.
from burrs.
1. Loosen the bolt three or four turns. 2. Check that the drilled holes in the disc blade are
chamfered to clear the radius under the bolt head.

2. Tap the bolt head until the tooth has moved outward. 3. Use an anti-seeze compound under the bolt head,
along the mating threads and on the tooth shank.

3. Remove the bolt and slide the tooth out of the blade.

4. Check for clearance. The tooth must be seated tightly

against the shoulder of the disc blade.

5. Torque the tooth mounting bolts to the correct torque.

See page 6 - 5 for correct torque specifications.

Do Not Use An Impact Wrench.

Do Not Over-torque.

6 - 16
 Section 6
Lubrication & Maintenance

6.7 Carbide Tip Replacement

6.7.1 Materials Required:

1. Flux -
Recommended flux is Handy Flux (Handy and
Harman) available from your Koehring Waterous
Dealer.

2. Brazing Alloy -
Recommended brazing alloy (Handy and Harman
Easy-Flo 3), is available from your Koehring
Waterous Dealer.

3. Emery Paper -
A medium grade emery paper is sufficient to remove
the oxide film from the carbide tip.

4. Cleaning Solvent -
Use a greaseless solvent for cleaning tooth recess
and carbide tip that removes all traces of oil and does
not leave a residue.

6.7.2 Brazing Procedure

The teeth must be removed from the saw disc.

Important!
Do not touch the surface of the carbide tip or the tooth
with your bare hand.
Oil from your fingers will prevent a proper soldered joint.

1. Cut a piece of brazing alloy the size of the carbide tip

or slightly larger.

2. Clean the carbide tip with emery paper to remove the

dark grey film on the mating surface. (A clean tip will
be bright), then spray with cleaning solvent.

3. The tooth recess must be flat and free from burrs.

Use a fine file to eliminate any burrs. Clean the tooth
recess and carbide tip with a solvent to remove any
foreign matter.

6 - 17
 Section 6
Lubrication & Maintenance

6.7 Carbide Tip Replacement

6.7.2 Brazing Procedure

4. Coat the tooth with flux and then place the brazing
Blue Flame alloy in position and flux again. Place the carbide tip
in the tooth recess and coat the assembly liberally
No. 4 Torch with flux.

5. With a No. 4 torch tip, regulate the gases for a soft

reducing flame. This flame is indicated by a greenish

feather at the tip of the blue inner core.
Green Flame

6. Start heating the tooth from below the tip to avoid

overheating the corners of the machined recess.
2518-5
Heat to a cherry red (1300-1400o F) and then heat
along the top and sides of the tooth.

When the brazing alloy melts, apply the flame briefly

to the carbide tip, making sure that the flame is
moving.

Have a warm metal holding rod ready by holding it in

the flame during heating. When the brazing alloy is
completely molten, position the tip with the holding
rod. Spread heat briefly around the carbide edges to
ensure that the brazing alloy is completely visible
around the tip.

Remove the flame and maintain a light pressure with

the holding rod until the alloy sets.

Allow the tooth to cool slowly in air.

Never Cool By Quenching.

Important!
If all four carbide tips require replacement, complete the
brazing procedure for one tip at a time. Do not attempt
to braze all the tips at the same time.

6 - 18
 Section 6
Lubrication & Maintenance

6.8 Disc Blade & Tooth Data

Saw Head Model

Blade Assembly 4000NK

Hardened Teeth701366000
Curved Carbided Teeth

A
Replacement Teeth 4000NK

A. Hardened Teeth
B
B. Curved Carbided Teeth

6 - 19
 Section 6
Lubrication & Maintenance

6.8 Disc Blade & Tooth Data

Replacement Teeth 4000NK

Hardened Teeth1.93 1.75 1.0 .500

Replacement Teeth 4000NK

Curved Carbided Teeth

6 - 20
Section 6
Lubrication & Maintenance

6.9 Disc Saw Blade Removal

1. Shut the saw function off.

2. Close the clamp arms and use the hoist, stick and tilt
controls to tip the felling head forward until it rests
face down on the ground.

3. Shut the engine off.

4. Remove lower guards.

5. Attach a 1" eye bolt to one of the threaded holes in

the saw blade.

6. Use a sling attached to the stick boom, attach a chain

hoist to the sling and the eye bolt on the saw blade
to support the saw blade.

7. Use a 5/8" Allen head socket and remove the

retaining bolts and bottom flange.

CAUTION
The bottom flange is heavy (60 lbs).
Use a suitable lifting device to lower the bottom
flange.

6 - 21
 Section 6
Lubrication & Maintenance

6.9 Disc Saw Blade Removal

8. Remove the saw blade by using the chain hoist.

It may be necessary to pry on the blade through the

openings. By prying on one side and rocking the
opposite, the blade can be removed off the drive
shaft hub.

9. Lower the saw blade onto support stands or wood

blocks.

10. After removal:

(a) Check the drive shaft for burrs or scoring.

Use a fine emery cloth to remove them.

(b) Inspect the bottom flange for cracks or damage.

(c) Inspect the bolts.

(d) Check the blade for cracks or damage.

6 - 22
Section 6
Lubrication & Maintenance

6.10 Disc Saw Blade Installation

1. With saw blade on supports, clean blade mounting
surface.

2. Lubricate the bottom surface of the drive shaft with

anti-seize compound and install two dowel pins in
two drive shaft bolt holes.

3. Using the chain hoist lift the saw blade into position
on the drive shaft.

4. The socket head bolts should be installed lubricated

with anti-seize compound.
Position the bottom flange and install the bolts hand
tight. Remove the dowel pins and install the
remaining two bolts.

6 - 23
 Section 6
Lubrication & Maintenance

6.10 Disc Saw Blade Installation

5. Install the saw guard and locking bolt and nut to
prevent the saw blade from turning.

6. Torque the bolts evenly in three steps to seat the

blade on the shaft.

Final torque should be 280 - 320 ft. lbs (1240 - 1420

Nm).

7. Slowly rotate the blade by hand. Make sure that there

is no interference with the saw blade guard or butt
plate.

CAUTION
Wear work gloves and keep fingers clear of rotating
blade. The blade is heavy and can easily crush or
injure unprotected hands.

Failure to follow this safety precaution can lead to

serious injury.

6 - 24
Section 6
Lubrication & Maintenance

6.11 Driveshaft Components

Item Qty Description
1 1 Splinded Coupling
2 1 Lock Nut
3 1 Upper Bearing Cone
4 1 Upper Bearing Cup
5 1 Lower Bearing Cup
6 1 Lower Bearing Cone
7 1 Metal Ring
8 1 Lip Seal
9 1 Lower Seal
10 1 Driveshaft
11 3 Grease fitting
12 1 Relief Fitting
13 1 Flange Plate

11

2 1

3&4

10

12

11

5&6
8

7 9

13

11

6 - 25
 Section 6
Lubrication & Maintenance

6.12 Driveshaft Removal

1. Remove the saw blade. (See page 6 - 21).

2. Remove the saw motor guard and thoroughly clean

the area.Disconnect and plug the hoses from the
hydraulic motor. Label the hoses for reassembly.

Plug all of the ports and lines to prevent hydraulic

system contamination.

CAUTION:
The hydraulic motor is heavy. Use a suitable lifting
device to support the motor.

3. Remove the four bolts and lift off the hydraulic drive

motor.

4. Remove the adapter plate and the splined adapter.

6 - 26
Section 6
Lubrication & Maintenance

6.12 Driveshaft Removal

5. Loosen the lock nut two or three turns.

CAUTION:
Avoid hammering directly on the shaft.
This could damage the splines or upper bearing
assembly.

6. Using a soft steel punch, carefully drive the shaft

down until the bearing cone bottoms against the lock
nut.
Alternate between loosening the lock nut and driving
the shaft down until the lock nut is backed off about
half way up the threaded part of the driveshaft.

Note:
If the driveshaft cannot be hammered down, then
the upper bearing cone will have to be carefully
removed using a cutting torch. Be careful not to
damage the driveshaft.

CAUTION
The drive shaft is heavy. Make sure that it is
supported to prevent it from falling and being
damaged when the motor is removed.

Failure to follow these safety recommendations

could lead to risk of personal injury.

7. Place a hydraulic floor jack under the driveshaft.

Once the weight of the driveshaft in resting on the
jack, remove the lock nut.

6 - 27
 Section 6
Lubrication & Maintenance

6.12 Driveshaft Removal

8. Remove the upper bearing cone (3). The bearing cup
will usually remain in the housing.

9. Re-install the lock nut hand tight to protect the threads

on the driveshaft.

10. Lower the driveshaft and remove it from the housing.

The seal and lower spacer will still be on the
driveshaft. The upper spacer may also be sitting on
top of the seal.

11.Remove the lower bearing cone (6) using a bearing

puller.

6 - 28
Section 6
Lubrication & Maintenance

6.12 Driveshaft Removal

12. Remove the seal (8) and bottom spacer (9).

13.Inspect the driveshaft for cracks, damaged splines, or

threads.

14.If necessary, use a fine emery cloth to clean up the

bearing contact surfaces. Remove only scores or
burrs. Avoid excessive sanding.

The new bearing cone must fit tight on the shaft.

15.Remove the upper (4) and lower bearing cups (5)

from the housing.

16.Inspect the housing for signs of wear or damage.

Remove all of the old grease from the housing
cavity.

6 - 29
 Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

1. Slide the driveshaft spacer onto the driveshaft.
The spacer must be installed with the tapered side
down.

Tap the spacer into place using a mild steel punch.

2. Thread the lock nut (2) onto the driveshaft (10) hand
tight to protect the threads. It will be removed later.

3. Lubricate the edge of the lip seal (8), then slide it down
the driveshaft and over the spacer (9).

The seal must be installed with the lip section facing

up.

6 - 30
Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

4. Thoroughly pack the lower bearing cone (6) with EP
grease and then install the bearing cone onto the
driveshaft.

The bearing cone will have to be tapped into

position. The tool used must be made of soft, mild
steel.

Important!
Do not tap the outer cage of the bearing.

CAUTION
Failure to pack the lower bearing cone with grease
before installation could result in premature bearing
failure.

5. Install the lower bearing cup into the saw housing.

6. Install the seal spacer (7) next to the bearing cup (5).
Coat the spacer with grease to hold it in position.

6 - 31
 Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

7. Install the upper bearing cup (4) into the housing.

8. Check that the seal spacer is still in position.

Set the driveshaft on a floor jack, then raise the

jack until the seal touches the housing.

9. Using a blunt 5/8" diameter drift, gently tap

the seal part way into the housing.
Place the drift in several holes, tapping the seal
each time so that it goes into the housing evenly.

10. Alternate between tapping the seal and raising the

floor jack until the driveshaft bottoms against the
lower bearing.

Be careful not to lift the seal above the driveshaft

spacer.

6 - 32
Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

11.Remove the lock nut from the driveshaft and fill the
housing cavity with grease to the bottom of the
bearing cup.

12. Pack the upper bearing cone with grease. Slide the
bearing cone onto the driveshaft.

13.As soon as the bearing cone has cleared the first part
of the threads, install the lock nut onto the shaft.

Use the nut to protect the threads back alternately

tapping the bearing cone (3) and tightening the nut
(2) until the beaing cone bottoms on the bearing cup.

6 - 33
 Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

14. Mark one spline on the lock nut and the matching
spline one the shaft with soapstone. This step is
critical since it will be used to obtain the correct
preload on the bearings.

15. Loosen the lock nut by two splines.

16.Grease both the inside and outside of the splined

coupling adapter (1) and then insert the coupling into
the driveshaft.

6 - 34
Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

17.Insert a wedge between the driveshaft flange and the
saw head housing. Lightly tap on the wedge until
the upper bearing cone is tight against the lock nut.

18.Use a dial indicator to assure end play is between

.004" to .006" . If the end play is outside of this
tolerance, refer to page 6 - 37 for end play
adjustment.

19. Install the motor adapter ring.

6 - 35
 Section 6
Lubrication & Maintenance

6.13 Driveshaft Assembly

20.Install the hydraulic motor. Torque the mounting bolts
to 200 - 220 ft. lbs. (270 - 300 Nm).

21. Connect the hydraulic hoses to the motor.

22.Using a hand grease gun pump grease into the

bearing cavity through the grease fitting until it
comes out of the breather.

6 - 36
Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play
Note If excessive end play is found, adjust the bearings
as described below.

Remove the saw motor guard and thoroughly clean the

area.

Disconnect and plug the hydraulic hoses.

Label the hoses for reassembly.

Plug the ports on the hydraulic motor to prevent

contamination.

Remove the hydraulic motor making sure the splined

adapter stays in place.

CAUTION
The hydraulic motor is heavy. Use a suitable lifting
device.

Failure to follow these safety precautions can lead

to risk of serious injury.

6 - 37
 Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play
Remove the motor adapter ring.

Set the saw head on saw horses.

Raise the floor jack to remove all clearance from the

lower bearing.

If a tree stump is being used, push down on the saw

head by using the vehicle hydraulic system.

Use a dial indicator with a magnetic base.

Place the indicator probe on top of the adjusting nut (2)
and set the indicator to "0".

6 - 38
Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play
Release the upward pressure on the saw drive shaft
either by lowering the jack or, if a stump is being used,
lift the saw head slightly with the feller buncher.

The drive shaft should drop by the amount of end play

between the bearings. This end play will show on the
dial indicator.

If the drive shaft does not move, use a pry bar between
the blade and the housing to lower the shaft.

DANGER
Wear work gloves and keep your fingers clear.

Failure to follow these safety precautions can lead

to risk of serious injury.

Rotate the blade back and forth slowly by hand to get a

correct dial indicator reading.

Correct bearing end play range is .004" to .006".

If the indicator reading is less than .004", or more than
.006", adjustment is required (See page 6 - 37).

6 - 39
 Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play
Adjustment Procedure:

Push shaft upwards and remove the splined adapter.

Using a soapstone, mark the position of the nut (2)

relative to one of the splines on the drive shaft.

The soapstone mark must be on both the nut and the

spline.

Tightening the nut so that the soapstone mark moves.

One spline will reduce the end play approximately .003".

Calculate how much end play must be removed. Using

a punch, alternately drive bearing (3) down on shaft and
tighten locknut (2) to remove excess end play.

6 - 40
Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play

Install the splined adapter (1).

Install the motor adapter ring.

Install the hydraulic motor.

Torque the mounting bolts to 200 - 220 ft. lbs.
(270 - 300 Nm)

CAUTION
The hydraulic motor is heavy. Use a suitable lifting
device.

Failure to follow these safety precautions can lead

to risk of serious injury.

6 - 41
 Section 6
Lubrication & Maintenance

6.14 Unscheduled Maintenance

6.14.1 Adjust Saw Shaft End Play
Connect the hydraulic hoses to the motor.

6.14.2 Check Hoses and Fittings

Inspect the hoses and fittings for signs of damage or

leaks.

6 - 42
Section 7
Hydraulic System

7. Hydraulic System

7.1 Start Up Procedure 7-2

7.2 Pressure Setting 7-3
7.3 Saw Motor Cross Section & Schematic 7-6

7-1
 Section 7
Hydraulic System

7.1 Start-Up Procedure

7.1.1 Initial Pump & Motor Start-up

1. Fill pump and motor case through highest case drain
plug. Rotate saw blade by hand as you fill the motor
case. This will ensure bearings are submerged in
fluid and assist in removing air from lower bearing
area.

2. Where possible fill high pressure lines and then

check hose connections and tighten as required.

3. With the tracks of the carrier blocked and the saw

guard installed on the felling head, start engine and
operate saw at low engine idle for 10 minutes.
Occasionally crack open case drain connection on
motor to allow air to escape.

11615

7-2
Section 7
Hydraulic System

7.2 Pressure Setting

7.2.1 Saw Circuit Pressure Setting

This procedure applies to initial installation of a New or
Serviced Saw Motor. Refer to section 6, page 6-10 for
periodic Quick Saw Circuit Pressure Check.

1. Install a 5000 p.s.i. gauge in the carrier saw control

valve test port or "G" port on the saw motor and also
in the "M" port (test fitting) of the saw motor.

2. Install saw blade guard and block the saw rotation

using the locking bolt provided.

3. Have an assistant start the engine, engage the saw

drive and move the throttle to half speed.

7-3
 Section 7
Hydraulic System

7.2 Pressure Setting

7.2.2 Begin Of Stroke Adjustment

4. Adjust the saw pump Main Regulating Pressure or
P.O.R. to Begin of Stroke pressure setting.

5. Loosen the jam nut and turn the Begin of Stroke

adjusting screw out until the gauge in the motor "M"
port reads 0 p.s.i. Then slowly turn the adjusting
screw in until the pressure on the gauge starts to
rise (500-800 p.s.i.). Lock the jam nut on the
adjusting screw.

6. Adjust the saw pump Main Regulating Pressure or

P.O.R. up to specifications (see specifications
section 10) and then turn the adjusting screw one
additional turn.

7. Turn saw control off and throttle engine back to idle.

Shut engine off.

8. Remove locking bolt from saw blade guard.

7-4
Section 7
Hydraulic System

7.2 Pressure Setting

7.2.3 Saw Speed Adjustment

1. Remove the shield on the front of the saw motor and
ensure the saw speed adjusting screw is protruding
only 17 mm (.687") beyond the jam nut.

17 mm
.687"

2. With the tracks of the carrier blocked, the saw guard

installed on the felling head and the saw free to
rotate, start the engine and engage the saw drive.
Move the engine throttle to full speed.

3. Using a tachometer check saw speed, refer to

specifications for applicable saw speed. Turn
adjusting screw out (counter clockwise) to increase
speed or in (clockwise) to decrease speed.

7-5
 Section 7
Hydraulic System

7.3 Saw Motor Cross Section & Schematic

1. Saw speed adjusting screw.
2. Begin of Stroke adjusting screw
3. "M" port, install 5,000 psi gauge here for Begin of Stroke adjustment.
4. Saw Motor Hydraulic Schematic

7-6
 Section 8
Electrical System

8. Electrical System

8.1 Saw Speed Sense Equipment 8-2

8.2 Saw Speed Tachometer 8-4

8-1
 Section 8
Electrical System

8.1 Saw Speed Speed Sense Equipment

*1. Connector
*2. Coupling
*3. Bracket
*4. Connector
*5. Tachometer 12 Volt
*6. Bracket
*7. Display Mount
*8. Voltage Regulator (24 volt to 12 volt)
*9. Heat Sink
10 Speed Sensor
11 Wiring Harness
12 Hose Assembly

*Items included in Tachometer Kit 701538300.

Item 10 is factory installed.
Items 11 & 12 are customer supplied.

8-2
 Section 8
Electrical System

8.1 Saw Speed Speed Sense Equipment

12 11

12 11 10

8-3
 Section 8
Electrical System

8.2 Saw Speed Tachometer

An optional tachometer kit part number 701538300 is

available for monitoring saw speed. The kit can be
purchased from your dealer. Installation and assembly
instructions are included in the kit.

The speed sensor is factory installed on the felling head.

The gap is set at .040" - .060". This is achieved by
threading the sensor (2) in until the sensor bottoms
against the nut (1), then thread the sensor out 2/3 to one
full turn.

This adjustment is based on the nut being undamaged

or new.

The tachometer requires a 12 volt supply to operate,

included in the kit is a voltage regulator and heat sink for
converting 24 volt supply to 12 volt. The tachometer is
calibrated at 4 pulses per revolution.

Typical 12 Volt Supply

1. 12 Volt to Light
2. Ground for Light Circuit
3. Ground for Tachometer Circuit
4. Harness to Speed Sensor
5. 12 Volt Supply

Typical 24 Volt Supply

1. 12 Volt to Light
2. Ground for Light Circuit
3. Ground for Tachometer Circuit
4. Harness to Speed Sensor
5. 12 Volt Supply
6. Ground for Voltage Regulator
7. 24 Volt to Voltage Regulator
8. Voltage Regulator (24V to 12V)
9. Heat Sink

Refer to section 10 (Equipment Specifications) for

applicable saw speed.

8-4
Section 11
Specifications & Troubleshooting

9. Troubleshooting

9.1 Saw Blade Stalling 9-2

9.1.1 Operator Technique 9-2
9.1.2 Blade Maintenance 9-2
9.1.3 Hydraulic 9-3
9.1.4 Can’t Obtain Maximum Blade Speed 9-4

9-1
 Section 9
Troubleshooting

9.1 Saw Blade Stalling

9.1.1 Operator Technique

Speed of cut. Review operating procedures in manual with

operator.

Accumulating too many trees.

Consult experienced operators and dealer service
reps. for operating techniques.
Cutting or clamping sequence.

Saw head cutting position - low or high approach

angle.

9.1.2 Blade Maintenance

Tooth carbides damaged/worn.
Cutting tips/carbides must be wider than the tooth.

Tooth cutting edge damaged/worn.

Tooth cutting edge must be larger than remaining
part of tooth. replace teeth in pairs.
Missing teeth, loose hardware.
Check tooth mounting and replace teeth in pairs.

Broken tooth mounting lugs.

Replace teeth in pairs. check and review operator
technique.
Bent blade.
Check and review operator technique. replace blade
if run out exceeds .100".
Butt plate position, cracks.
Re-position and weld/tighten bolts. Repair cracks.

Saw housing plugging.

Clean out debris, check operator technique.

9-2
Section 11
Specifications & Troubleshooting

9.1 Saw Blade Stalling

9.1.3 Hydraulic

Saw pressures out of adjustment. Review specifications and adjustment

procedure.

Low saw blade speed. Check blade speed, review service manual for
procedure and specs. See also Can’t Obtain Maximum
Blade Speed.

Blade speed recovery slow. Incorrect begin of stroke pressure. Swivel time orifice
seized, plugged or installed wrong.

618, CASE 1187- 6 mm tapered plug missing from saw

Saw circuit shuts off when tree clamps are used, control valve, and or saw relief valve.
and or hose failure occurs at saw motor.

618, CASE 1187- Relief valve cartridge loose in housing... tighten

Loss in saw circuit maximum pressure as hydraulic cartridge & check maximum pressure.
oil temp. increases.

Saw motor shaft seal failure. Check case drain hose installation and routing or
motor for excessive by-passing.

9-3
 Section 9
Troubleshooting

9.1 Saw Blade Stalling

9.1.4 Can’t Obtain Maximum Blade

Speed
Begin of Stroke pressure is lower than the pressure Readjust Begin of Stroke pressure.
required to maintain saw speed.

Saw circuit check valve by-passing. Replace check valve assembly.

Motor stroking piston seized in max. displacement Repair/replace motor.

position.

Loss of pump flow. Repair/replace pump.

Excessive motor case drain. Repair/replace motor.

9-4
 Section 10
Specifications

10. Specifications

10.1 General Specifications 10 - 2

10.2 Service Specifications By Model 10 - 3

10.3 Dimensions 10 - 6

10 - 1
 Section 10
Specifications

10.1 General Specifications

BOLT TORQUES (ft. lbs. lubricated)

Saw Blade 280-320 (3/4" 16 UNF)
Lower Guard Plate 165 (locknut end) (3/4" 10 UNC)
Saw Tooth 85 (1/2" 20 UNF) 165 (5/8")
Saw Drive Motor 200-220 (3/4" 10 UNC)
Clamp Arm Pin Retainers 150-180
Butt Plate 165 (locknut end) (3/4" 10 UNC)

CLAMP CYLINDERS
No. Cylinders 2
Bore Diameter 4.0 in. (101.6mm)
Rod Diameter 2.0 in. (50.8mm)
Stroke 8.5 in. (215mm)
Operating Pressure 3000 psi

HYDRAULIC REQUIREMENTS
Saw Blade 30 gpm @ 3500 psi
25 gpm @ 4000 psi
Clamp Cylinders 30 gpm @ 3200 psi

MISCELLANEOUS
Cutting Capacity 22" (430 mm) dia.
Weight 8000 LB. (2363 kg.)

SAW BLADE
Series 4000B
No. Teeth 18 rotatable
Type Carbide/Non Carbide Options
Saw Speed 1100 rpm +/- 50 rpm

10 - 2
 Section 10
Specifications

10.2 Service Specifications By Model

Caterpillar 300
Motor Displacement 160 Cm3
Blade Speed 1100 +/- 50
Main Regulating Pressure 3100
Begin of Stroke 2800 psi
Upper Clamp Port Relief 3600
Upper Clamp Main Relief 2800
Lower Clamp Port Relief 3600
Lower Clamp Main Relief 2800
Clamp Open Pressures 2000
Wrist Main Relief 2800 psi
Wrist Port Relief 3600 psi

Caterpillar 325
Motor Displacement 160 Cm3
Blade Speed 1100 +/- 50
Main Regulating Pressure 3450
Begin of Stroke 3150 psi
Upper Clamp Port Relief 3200
Upper Clamp Main Relief 2800
Lower Clamp Port Relief 3200
Lower Clamp Main Relief 2800
Clamp Open Pressures 2000
Wrist Main Relief 2800 psi
Wrist Port Relief 3200 psi

10 - 3
 Section 10
Specifications

10.2 Service Specifications By Model

Caterpillar 330

Motor Displacement 160 Cm3

Blade Speed 1100 +/- 50
Main Regulating Pressure 3450 ps
Begin of Stroke 3150 psi
Upper Clamp Port Relief 3200 ps
Upper Clamp Main Relief 2800 ps
Lower Clamp Port Relief 3200 ps
Lower Clamp Main Relief 2800 ps
Clamp Open Pressures 2000 ps
Wrist Main Relief 2800 psi
Wrist Port Relief 3200 psi

John Deere 793

Motor Displacement 160 Cm3

Blade Speed 1100 +/- 50
Main Regulating Pressure 3500 ps
Begin of Stroke 3000 psi
Upper Clamp Port Relief 3200 ps
Upper Clamp Main Relief 2700 ps
Lower Clamp Port Relief 3200 ps
Lower Clamp Main Relief 2700 ps
Clamp Open Pressures 2000 ps
Wrist Main Relief 2800 psi
Wrist Port Relief 3200 psi

S.Madill 3200

Motor Displacement 160 Cm3

Blade Speed 1100 +/- 50
Main Regulating Pressure 4000 ps
Begin of Stroke 3500 psi
Upper Clamp Port Relief 3200 ps
Upper Clamp Main Relief 2500 ps
Lower Clamp Port Relief 3200 ps
Lower Clamp Main Relief 2500 ps
Clamp Open Pressures 2000 ps
Wrist Main Relief 3200 psi
Wrist Port Relief 2500 psi

10 - 4
 Section 10
Specifications

10.2 Service Specifications By Model

S.Madill 3200B

Motor Displacement 160 Cm3

Blade Speed 1100 +/- 50
Main Regulating Pressure 4000
Begin of Stroke 3500 psi
Upper Clamp Port Relief 3200
Upper Clamp Main Relief 2500
Lower Clamp Port Relief 3200
Lower Clamp Main Relief 2500
Clamp Open Pressures 2000
Wrist Main Relief 3200 psi
Wrist Port Relief 2500 psi

Timberjack 628FB

Motor Displacement 160 Cm3

Blade Speed 1100 +/- 50
Main Regulating Pressure 4000
Begin of Stroke 3500 psi
Upper Clamp Port Relief 3200
Upper Clamp Main Relief 2500
Lower Clamp Port Relief 3200
Lower Clamp Main Relief 2500
Clamp Open Pressures 2000
Wrist Main Relief 3200 psi
Wrist Port Relief 3400 psi

10 - 5
 Section 10
Specifications

10.3 Dimensions

10 - 6
Section 11
Miscellaneous 11/1996

11. Miscellaneous

11.1 Metric & Imperial Unit Expressions 11 - 2

11.2 Measurement Conversions 11 - 2
11.3 Miscellaneous Conversions 11 - 3
11.4 Wood Measurement Equivalents 11 - 4
11.5 Weights of Commercially Important Woods 11 - 5
11.6 General Bolt Torque Values 11 - 6

11 - 1 O10011A1
 Section 11
11/1996 Miscellaneous

11.1 Metric & Imperial Unit 11.2 Measurement

Expressions Conversions

Quantity Unit Symbol Length

Length miles x 1.6093 = km
millimeter mm yards x 0.9144 =m
centimeter cm feet x 0.3048 =m
metre m feet x 30.480 = cm
kilometer km inches x 2.540 = cm
inch in. inches x 25.40 = mm
foot ft. km x 0.621 = miles
yard yd. km x 1093.6 = yards
mile mi. km x 3280.9 = feet
m x 1.094 = yards
Area m x 3.281 = feet
square millimeter mm2 m x 39.37 = inches
square centimeter cm2 cm x 0.3937 = inches
square meter m2 mm x 0.03937 = inches
square inch in2
square foot ft2
hectare ha Volume
acre ac
cu. yards x 0.765 = cu. m
Volume cu. feet x 0.283 = cu. m
cubic millilitre mm3 cu. inches x 16.383 = cu. cm.
cubic metre cm3 cu. m x 1.308 = cu. yard
cubic inch in3 cu. m x 35.3145 = cu. feet
millilitre ml cu. cm x 0.06102 = cu. inches
litre l
pint pt. Weight
quart qt.
gallon gal.
kg x 0.453 = pounds
metric ton x 1.1023 = short ton
Mass
metric ton x 0.9842 = long ton
gramme g
pounds x 2.2046 = kg
kilogram kg
short ton x 0.9072 = metric ton
tonne t
long ton x 1.0161 = metric ton
ton ton
pound lb.
Liquid
Pressure
pound per sq. in. lb/in2 U.S. gallons x 0.8333 = Imp. gal.
bar bar U.S. gallons x 3.785 = litres
U.S. quarts x 0.946 = litres
Torque Imp. gallons x 1.2009 = U.S. gal.
newton metre Nm litres x 0.2642 = U.S. gal.
foot-pound-force ft.lb. litres x 1.057 = U.S. qt.

O10011A1 11 - 2
Section 11
Miscellaneous 11/1996

11.2 Measurement 11.3 Miscellaneous

Conversions Conversions

Area
sq. mile x 2.59 = sq. km acre x 43.560 = sq.ft.
acres x 0.00405 = sq. km board feet x 144.0 = cu. in.
acres x 0.4047 = hectares BTU x 778.0 = ft. lb.
sq. yard x 0.8361 = sq. m bushel x 1.244 = cu. ft.
sq. feet x 0.0929 = sq. m cu. ft. x 17280 = cu. in.
sq. inches x 6.452 = sq. cm cu. ft. x 7.481 = U.S. gal.
sq. inches x 645.2 = sq. mm
sq. km x 0.3861 = sq. miles U.S. gallon x 231.0 = cu. in.
sq. km x 247.11 = acres HP x 33.000 = lb ft/min
hectares x 2.471 = acres HP x 0.7457 = kilowatt
sq. m x 1.196 = sq. yards
sq. m x 10.764 = sq. feet kilowatt x 1.341 = HP
sq. cm x 0.155 = sq. inches knot x 1.152 = miles/hr.
sq. mm x 0.00155 = sq. inches radian x 57.30 = degrees
rod x 16.50 = feet
lb. (force) x 4.440 = Newton
Flow
U.S. gpm x 3.790 = litres/min
U.S. gpm x 0.063 = litres/sec
cu. ft./min x 0.472 = litres/sec
litres/min x 0.264 = U.S. gpm
litres/sec x 15.873 = U.S. gpm
litres/sec x 2.119 = cu. ft./min

Pressure
lb/sq.in. x 6.89476 = kPa
lb/sq.in. x 0.068 = atm
lb/sq.in x 0.069 = bar
inch of Hg. x 0.3.37411 = kPa
kPa x 0.145 = lb/sq. in.
kPa x 0.2964 = in. of Hg.
atm x 14.70 = lb/sq. in.
bar x 14.50 = lb/sq. in.

11 - 3 O10011A1
 Section 11
11/1996 Miscellaneous

11.4 Wood Measurement Equivalents

Cubic Metre Stacked Cubic Metre Solid Board Foot

Cord Cunit

1Cord = 128 1 Cunit = 100 1 m3 stacked = 1 m3 solid = 1 board foot =

apparent cu.ft cu.ft of solid wood the apparent solid wood only 1/12 solid cubic
volume in 1 m3 in 1m3 foot. *FBM

A B C D E

1 0.85 3.625 2.407 500

1.176 1 4.264 2.832 600

0.276 0.234 1 0.664 138

0.415 0.353 1.506 1 208

2 1.67 7.25 4.81 1000

The cord (column A) and cubic meters stacked (column C) measure "apparent" volume.
The cunit (column B) and cubic meter solid (column D) measure "solid" volume.

Accurate conversions are possible between columns A and C, and between B and D only.
Any other conversions are approximate and wood volume will vary with tree species, size, etc.

Example:

1 cunit (column B) = exactly 2.832 solid meters (Column D)

1 cord (column A) = approximately 2.407 solid cubic meters (Column D)

*FBM is the abbreviation of 1 Board Ft. (Foot Board Measure).

One thousand board feet is referred to as "MFBM"

O10011A1 11 - 4
Section 11
Miscellaneous 11/1996

11.5 Weights of Commercially Important Woods

Species kg./m3 lb./ft3 Species kg.m3 lb./ft3

Alder, Red 737 46 Magnolia, Cucumber 785 49

Ash, White 769 48 Maple, Big Leaf 753 47
Aspen, Quaking 689 43 Black 865 54
Red 801 50
Baldcypress 817 51 Silver 721 45
Basswood, American 673 42 Sugar 897 56
Beech, American 865 54
Birch, Paper 801 50 Oak, Black 1009 63
Yellow 929 58 Chestnut 977 61
Red 1009 63
Cedar, Alaska 577 36 Red, Swamp 1073 67
Incense 721 45 Swamp Chestnut 1041 65
Northern White 449 28 White 993 62
Port-Orford 897 36 White, Swamp 1105 69
Western Red 433 57
Cherry, Black 721 45 Pine, Jack 801 50
Cottonwood, Eastern 785 49 Loblolly 993 62
Lodgepole 625 39
Douglas Fit, Coast 881 55 Long Leaf 993 62
Inland North 577 36 Norway (Red) 673 42
Elm, American 865 54 Short Leaf 993 62
Slash 993 62
Fir, Alpine 449 28 Sugar 817 51
Balsam 721 45 Western Yellow 721 45
Nobel 481 30 White - Western 561 35
Red 769 48 White - Eastern 577 36
Silver 577 36 Poplar, Yellow 609 38
White 753 47
Redwood 801 50
Gum, Black 721 45
Blue 1121 70 Spruce, Black 513 32
Red 801 50 Engleman 625 39
Tupelo 897 56 Red 545 34
Sitka 529 33
Hemlock, Eastern 801 50 White 545 34
Western 657 41 Sweetgum 801 50
Hickory, Pecan 993 62 Sycamore, American 833 52
True 1009 63
Tamarack 753 47
Larch, Western 769 48
Locust, Black 929 58 Walnut, Black 929 58
Willow, Black 801 50

Notes!
1. The values shown in this chart are green weights.
2. The chart is to be used as a reference only.
If a weight table exists for the region you are in, use it in place of this one.

11 - 5 O10011A1
 Section 11
11/1996 Miscellaneous

11.6 General Bolt Torque Values

Thread SAE Grade 8 UNC Thread Notes!

Size Lb ft Nm 1. Use these torque values when specific torques are

not available.
1/4 9 - 10 12 - 14
5/16 18 - 20 24 - 27 2. Do not use these torques when other torque values
3/8 34 - 40 50 - 55 are specified either in this manual or other manuals
pertaining to this equipment.
7/16 60 - 65 80 - 90
1/2 90 - 100 125 - 135 3. Torque values shown are for fasteners coated with
9/16 125 - 140 170 - 190 phosphate and oil, and used with hardened washers.

5/8 175 - 190 240 - 255

3/4 300 - 330 405 - 455
7/8 475 - 525 645 - 710

1 in. 725 - 800 985 - 1085

1-1/8 1050 - 1175 1425 - 1595
1-1/4 1475 - 1625 2000 - 2205
1-3/8 2000 - 2200 2710 - 2980
1-1/2 2600 - 2850 3525 - 3865
1-5/8 3450 - 3800 4680 - 5150

1-3/4 4300 - 4800 5850 - 6510

1-7/8 5500 - 6100 7460 - 8270
2 in. 6500 - 7200 8810 - 9760

Metric ISO Grade 10.9

Thread
Size Lb ft Nm

M6 10 14
M7 15 20
M8 25 34

M10 50 68
M12 87 118
M14 137 185

M16 213 289

M18 289 392
M20 420 471

M22 564 765

M24 724 981
M27 1085 1471
M30 1447 1982

O10011A1 11 - 6
Section 12
Index

Index
B

5-2 Basic Operation

7-4 Begin of Stroke Adjustment
11-6 Bolt Torque Values - General
4-4 Bypass Check Valve

C
6-17 Carbide Tip Replacement

10-6 Dimensions
6-14 Disc Blade Description
6-15 Disc Blade Inspection
6-23 Disc Blade Installation
6-21 Disc Blade Removal
6-19 Disc Blade & Tooth Data
6-30 Drive Shaft Assembly
6-25 Drive Shaft Components
6-26 Drive Shaft Removal

E
8-1 Electrical System

F
3-10 Fire Prevention
1-2 Forward

12 - 1
 Section 12
Index

Index
G
11-6 General Bolt Torque Values
3-3 General Safety Precautions
10-2 General Specifications

H
7-1 Hydraulic System

6-1 Lubrication and Maintenance

6-3 Maintenance Procedures

6-2 Maintenance Schedule
11-2 Measurement Conversions
11-3 Metric and Imperial Unit Expressions
1-3 Model and Serial Number Record
4-4 Motor

4-2 Nomenclature
1-4 Non-approved Field Product Changes

5-5 Operating Instructions

3-6 Operating Safety Precautions
9-2 Operating Technique

P
7-3 Pressure Setting

12 - 2
Section 12
Index

Index
S
3-1 Safety Rules
3-2 Safety Symbol
7-3 Saw Circuit Pressure Setting
10-6 Saw Head Dimensions
4-3 Saw Drive Components
4-4 Saw Drive Description
7-6 Saw Motor Cross Section & Schematic
6-37 Saw Shaft End Play
7-5 Saw Speed Adjustment
8-2 Saw Speed Sense Equipment
8-4 Saw Speed Tachometer
3-7 Servicing Safety Precautions
10-2 Specifications
7-2 Start-up Procedure

i Table of Contents
6-16 Tooth Assembly
6-16 Tooth Removal
9-1 Trouble Shooting

3-2 Understanding Signal Words

6-37 Unscheduled Maintenance

2-2 Warranty Certificate

11-5 Weights of Commercially Important Woods
11-4 Wood Measurement Equivalents
6-7 Wrist Attachment Torques

12 - 3
Section 12
Index

12 - 4