0% found this document useful (0 votes)
95 views100 pages

Concrete Mixer 6990042 enUS SM

Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
0% found this document useful (0 votes)
95 views100 pages

Concrete Mixer 6990042 enUS SM

Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 100

Service Manual

Concrete Mixer

(Concrete Mixer) S/N AK7400101 & Above

Dealer Copy -- Not for Resale

6990042 (6-11) Printed in U.S.A. © Bobcat Company 2011

1 of 100
2 of 100
Dealer Copy -- Not for Resale
MAINTENANCE SAFETY
Instructions are necessary before operating or servicing machine. Read and
understand the Operation & Maintenance Manual, Operator’s Handbook and
WARNING
WARNING signs (decals) on machine. Follow warnings and instructions in the manuals
when making repairs, adjustments or servicing. Check for correct function after
adjustments, repairs or service. Untrained operators and failure to follow
instructions can cause injury or death. W-2003-0807

Safety Alert Symbol: This symbol with a warning statement, means: “Warning, be alert! Your safety is
involved!” Carefully read the message that follows.

CORRECT

Dealer Copy -- Not for Resale


P-90216

Never service attachments / implements without


instructions. See Operation & Maintenance Manual and
Attachment / Implement Service Manual.

Cleaning and maintenance are required daily.

Never service or adjust attachment / implement with the


engine running unless instructed to do so in manual.

Always lower the attachment / implement to the ground


before lubricating or servicing.

Avoid contact with leaking hydraulic fluid or diesel fuel


under pressure. It can penetrate skin or eyes.

Stop, cool and clean engine of flammable materials before


checking fluids.

Keep body, loose objects and clothing away from moving


parts, electrical contacts, hot parts and exhaust.

Safety glasses are needed for eye protection from electrical


arcs, battery acid, compressed springs, fluids under
pressure and flying debris or when tools are used. Use eye
protection approved for type of welding.

MSW30-0409

3 of 100 1-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

4 of 100 1-2 Concrete Mixer Service Manual


CONTENTS

SAFETY AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-01

HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-01

MAINFRAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-01

ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-01

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEC-01

ALPHABETICAL INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INDEX-01

Dealer Copy -- Not for Resale

5 of 100 1-3 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

6 of 100 1-4 Concrete Mixer Service Manual


FOREWORD

SERIAL NUMBER LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7


Attachment Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

DELIVERY REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

ATTACHMENT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

FEATURES AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9


Standard Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Dealer Copy -- Not for Resale

7 of 100 1-5 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

8 of 100 1-6 Concrete Mixer Service Manual


SAFETY
SERIAL NUMBER LOCATION DELIVERY REPORT
MAINTENANCE
Attachment Serial Number Figure 2

Figure 1
HYDRAULIC
SYSTEM

B-16315

P102693
The delivery report [Figure 2] must be completed by the
dealer and signed by the owner or operator when the
Always use the serial number of the concrete mixer when Bobcat concrete mixer is delivered. An explanation of the
requesting service information or when ordering parts. form must be given to the owner.

Dealer Copy -- Not for Resale


Early or later models (identification made by serial ELECTRICAL
number) may use different parts, or it may be necessary SYSTEM
to use a different procedure in doing a specific service
ANALYSIS
operation [Figure 1].

ENGINE
SERVICE

HVAC

SPECIFICATIONS

SPECIFICATIONS

9 of 100 1-7 Concrete Mixer Service Manual


ATTACHMENT IDENTIFICATION

REMOVABLE HOSE
GUIDE VIEWING
WINDOWS

HYDRAULIC HOSES

Dealer Copy -- Not for Resale


HYDRAULIC MOTOR
P102692
P102692

MIXING DRUM

REMOTE ATTACHMENT CONTROL


(RAC)

MOUNTING FRAME

P102702

10 of 100 1-8 Concrete Mixer Service Manual


FEATURES AND ACCESSORIES

Standard Items

The concrete mixer is equipped with the following


Standard Items:

• 0.20 m3 (6.9 ft3) Drum Capacity.

• Remote Attachment Control Kit.

Dealer Copy -- Not for Resale

11 of 100 1-9 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

12 of 100 1-10 Concrete Mixer Service Manual


SAFETY AND MAINTENANCE

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1
Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10-1

DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1


Attachment Mounting Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1
Bob-Tach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-1
Mixer Drive Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20-3

LUBRICATING THE CONCRETE MIXER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1


Lubrication Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1

REGULAR MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1


Mixer Drive Chain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-40-1

DIAGNOSTIC SERVICE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-41-1


Service Codes (RAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-41-1

ATTACHMENT STORAGE AND RETURN TO SERVICE . . . . . . . . . . . . . . . . . . . . . . . 10-50-1


Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-1

Dealer Copy -- Not for Resale


Return To Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50-1

13 of 100 10-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

14 of 100 10-02 Concrete Mixer Service Manual


TROUBLESHOOTING

Chart

Instructions are necessary before operating or servicing machine. Read and


understand the Operation & Maintenance Manual, Operator’s Handbook and
signs (decals) on machine. Follow warnings and instructions in the manuals
WARNING when making repairs, adjustments or servicing. Check for correct function
after adjustments, repairs or service. Untrained operators and failure to follow
instructions can cause injury or death. W-2003-0903

If the attachment is not working correctly, check the hydraulic system of the machine thoroughly before making any
repairs on the attachment. Attachment problems can be affected by a hydraulic system that is not operating to
specifications. Connect a flow meter to the machine to check the hydraulic pump output, relief valve setting and tube
lines to check flow and pressure. (See the machine’s Service Manual for the correct procedure to connect the flow
meter.)

Use the following troubleshooting chart to locate and correct problems which most often occur with the attachment.

PROBLEM CAUSE CORRECTION


Concrete mixer does not seat Bob-Tach pins are not fully retracted Retract Bob-Tach pins before installing.
properly on the Bob-Tach. before installation.

Dealer Copy -- Not for Resale


Mud, dirt or stones are lodged Remove debris between Bob-Tach and
between the Bob-Tach and the concrete mixer.
concrete mixer.
Loader will not start with loader Engine stop switch on Remote Turn the engine stop switch clockwise to reset
key switch with attachment Attachment Control engaged. the switch.
installed. Key switch on Remote Attachment Turn the key switch to the OFF position.
Control in the run position.
Loader will not start with the Engine stop switch on Remote Turn the engine stop switch clockwise to reset
Remote Attachment Control key Attachment Control engaged. the switch.
switch. Loader key switch in the run Turn the loader key switch to the OFF position.
position.
Mixer drum does not turn. No hydraulic flow. Check quick couplers connection. Check for
damaged hose ends and fittings.
Engage loader front auxiliary hydraulics.
Damaged sprockets and / or drive Repair or replace sprockets and drive chain.
chain.
Incorrect chain adjustment. Adjust drive chain.
Mixer drum vibrates excessively. Concrete mixer not correctly Check for correct mounting of the concrete
attached to Bob-Tach. mixer to the Bob-Tach.
Drum rollers worn. Replace drum rollers.
Rear spindle bent. Replace spindle.
Rear spindle bearing is worn or Replace rear spindle bearing.
damaged.
Machine will not turn on from Blown fuse. Check fuses.
mixer remote key.

15 of 100 10-10-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

16 of 100 10-10-2 Concrete Mixer Service Manual


DAILY INSPECTION Figure 10-20-2

Attachment Mounting Frame


Figure 10-20-1

P-41502A

2 2
1 Push down on the Bob-Tach levers until they are fully
engaged in the locked position [Figure 10-20-2] (wedges
fully extended through the attachment mounting frame
P102692
holes).

Inspect the Bob-Tach wedge mount (Item 1), mounting The levers and wedges must move freely [Figure 10-20-
flange (Item 2) [Figure 10-20-1] and all welds on the 2].
concrete mixer mount for wear and damage each time

Dealer Copy -- Not for Resale


the concrete mixer is removed from the loader. Figure 10-20-3

Frequently inspect the concrete mixer to ensure that all


components are secure and that all bolts and nuts are
thoroughly tightened.

Bob-Tach

Hand Lever Bob-Tach


Bob-Tach wedge must
contact the lower edge of
the attachment mounting
frame hole.
WARNING P-79780

AVOID INJURY OR DEATH The wedges must extend through the holes in the
The Bob-Tach wedges must extend through the holes attachment mounting frame, securely fastening the
in the attachment mounting frame. Levers must be attachment to the Bob-Tach [Figure 10-20-3].
fully down and locked. Failure to secure wedges can
allow attachment to come off. NOTE: If the wedge does not contact the lower edge
W-2715-0208
of the hole, the attachment will be loose and
can come off the Bob-Tach.

Inspect the mounting frame on the attachment. (See the


machine's Operation and Maintenance Manual for
inspecting the Bob-Tach). Replace any parts that are
damaged, bent or missing. Keep all fasteners tight. Look
for cracked welds. Contact your Bobcat dealer for repair
or replacement parts.

Lubricate the wedges. (See the machine’s Operation &


Maintenance Manual for the correct procedure.)

17 of 100 10-20-1 Concrete Mixer Service Manual


DAILY INSPECTION (CONT’D) Figure 10-20-6

Bob-Tach (Cont’d)

Power Bob-Tach

WARNING
AVOID INJURY OR DEATH
The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can P-41500A
allow attachment to come off.
W-2715-0208
Push (Item 1) [Figure 10-20-4] or [Figure 10-20-5] and
hold the BOB-TACH “WEDGES DOWN” switch until the
Figure 10-20-4
levers are fully engaged in the locked position [Figure
Loader Switch 10-20-6] (wedges fully extended through the attachment
mounting frame holes).

Figure 10-20-7

Dealer Copy -- Not for Resale


1
B-15993A
Bob-Tach wedge must
contact the lower edge of
Figure 10-20-5 the attachment mounting
frame hole.
P-94792
Work Machine Switch

The wedges must extend through the holes in the


attachment mounting frame, securely fastening the
attachment to the Bob-Tach [Figure 10-20-7].
1
NOTE: If the wedge does not contact the lower edge
of the hole, the attachment will be loose and
can come off the Bob-Tach.

Inspect the mounting frame on the attachment. (See the


machine's Operation & Maintenance Manual for
P-88124
inspecting the Bob-Tach). Replace any parts that are
damaged, bent or missing. Keep all fasteners tight. Look
for cracked welds. Contact your Bobcat dealer for repair
or replacement parts.

Lubricate the wedges. (See the machine’s Operation &


Maintenance Manual for the correct procedure.)

18 of 100 10-20-2 Concrete Mixer Service Manual


DAILY INSPECTION (CONT’D)

Mixer Drive Chain

Figure 10-20-8

P102695

Clean and inspect the drive chain (Item 1) [Figure 10-20-


8] after the first five hours of operation, then every fifty

Dealer Copy -- Not for Resale


hours of operation.

WARNING
AVOID INJURY OR DEATH
Never operate with covers or guards removed.
W-2121-0788

19 of 100 10-20-3 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

20 of 100 10-20-4 Concrete Mixer Service Manual


LUBRICATING THE CONCRETE MIXER Lubricate the following grease fittings. EVERY 8 - 10
HOURS:
Lubrication Locations
Figure 10-30-2
Always use a good quality lithium base grease when
lubricating the concrete mixer. Apply the lubricant until
extra grease shows. 1

IMPORTANT
Fluid such as engine oil, hydraulic fluid, coolants,
grease, etc. must be disposed of in an
environmentally safe manner. Some regulations
require that certain spills and leaks on the ground
1
must be cleaned in a specific manner. See local, state
and federal regulations for the correct disposal. P102730
I-2067-0499

Figure 10-30-3
Lubricate the following grease fitting. EVERY 50
HOURS:

Dealer Copy -- Not for Resale


Figure 10-30-1

1
P102731

1 Drum rollers (Item 1) [Figure 10-30-2] and [Figure 10-


P102728 30-3].

Rear drum spindle (Item 1) [Figure 10-30-1].

21 of 100 10-30-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

22 of 100 10-30-2 Concrete Mixer Service Manual


REGULAR MAINTENANCE Figure 10-40-2

Mixer Drive Chain Adjustment

Clean and inspect the drive chain after the first five hours
of operation, then every 50 hours of operation.

WARNING
AVOID SERIOUS INJURY OR DEATH
Before loading, cleaning or inspecting mixed
material in the drum, stop the concrete mixer drum
and stop the machine engine. P102695
W-2331-0311

Open the cover and place a bolt (Item 1) [Figure 10-40-


2] through the hole to hold the cover open.

WARNING
AVOID INJURY OR DEATH

Dealer Copy -- Not for Resale


Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907

Figure 10-40-1

1
1

P102728

Remove the two bolts (Item 1) and nuts from the access
cover (Item 2) [Figure 10-40-1].

23 of 100 10-40-1 Concrete Mixer Service Manual


REGULAR MAINTENANCE (CONT’D) Figure 10-40-5

Mixer Drive Chain Adjustment (Cont’d)

Figure 10-40-3

1 2
2 2

1
P102728

1
Close the cover (Item 1), reinstall bolts (Item 2) [Figure
P102732 10-40-5] and nuts. Tighten the bolts.

Loosen the hydraulic motor mount bolts (Item 1) [Figure


10-40-3].

Move the motor (Item 2) [Figure 10-40-3] away from the

Dealer Copy -- Not for Resale


mixer to tighten the chain tension.

Figure 10-40-4

P102695

Adjust the drive chain (Item 1) [Figure 10-40-4] to 6,35


mm (0.250 in) movement.

When the chain tension is correct, tighten the motor


mount bolts (Item 1) [Figure 10-40-3].

24 of 100 10-40-2 Concrete Mixer Service Manual


DIAGNOSTIC SERVICE CODES Service codes may be either a word or a number.

Service Codes (RAC) [REPLY] One or both instrument panel(s) not


communicating with the main machine controller.
The Service Codes displayed on the RAC display will aid
in diagnosing conditions which can damage your [SHTDN] A shutdown condition exists.
machine.
CODE DESCRIPTION
NOTE: Machine software may need to be updated to
support some of the functionality of the RAC M7748 Key Switch This error is caused by both the
panel. Please see your authorized Bobcat Multiple machine key and RAC key being
Dealer for more information. set to “RUN”. Both keys must be
turned to OFF to clear this error
Figure 10-41-1 code.
A7701 Machine This error is caused by pressing
Key Active the “AUX” button on the RAC when
the machine key is set to “RUN”.
Pressing the “AUX” button in the
2 machine will clear this error code.
RAC Key This error is caused by pressing
Active the “AUX” button in the machine
when the RAC key is set to “RUN”.
Pressing the “AUX” button on the

Dealer Copy -- Not for Resale


RAC will clear this error code.
A7901 ESTOP This error is caused by the Engine
Active Stop switch being “Pressed”.
Releasing the Engine Stop switch
1 P-76455G will clear this error code.

NOTE: For additional information on Service Codes,


Press the INFORMATION button (Item 1) to cycle the see the machine’s Service Manual.
DATA DISPLAY (Item 2) [Figure 10-41-1] until the
service code screen is displayed. If more than one
SERVICE CODE is present, the codes will scroll on the
DATA DISPLAY.

NOTE: Corroded or loose grounds can cause


multiple service codes and / or abnormal
symptoms. All instrument panel lights
flashing, alarm sounding, headlights and
taillights flashing, could indicate a bad
ground. The same symptoms could apply if
the voltage is low, such as loose or corroded
battery cables. If you observe these
symptoms, check grounds and positive leads
first.

25 of 100 10-41-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

26 of 100 10-41-2 Concrete Mixer Service Manual


ATTACHMENT STORAGE AND RETURN TO SERVICE Return To Service

Storage After the Bobcat attachment has been in storage, it is


necessary to follow a list of items below to return the
Sometimes it may be necessary to store your Bobcat attachment to service.
attachment for an extended period of time. Below is a list
of items to perform before storage. • Be sure all shields and guards are in place.

• Thoroughly clean the attachment. • Lubricate the attachment.

• Lubricate the attachment. • Install and operate attachment, check for correct
function.
• Inspect the Bob-Tach wedge mounts, mounting flange
and all welds on the attachment for wear and damage. • Check for leaks. Repair as needed.

• Check for loose hardware, missing guards, or


damaged parts.

• Replace worn or damaged parts.

• Check for damaged or missing decals. Replace if


necessary.

• Place the attachment in a dry protected shelter.

Dealer Copy -- Not for Resale


• Place the attachment flat on the ground.

NOTE: In muddy conditions or to prevent the


attachment from freezing to the ground, put
the attachment on planks or blocks before
removing the attachment from the machine.

27 of 100 10-50-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

28 of 100 10-50-2 Concrete Mixer Service Manual


HYDRAULIC SYSTEM

HYDRAULIC MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-1


Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-1
Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-2
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-6
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-7
Timing The Hydraulic Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-11
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-10-12

HYDRAULIC CONTROL VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-1


Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-1
Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-2
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-3
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-20-8

Dealer Copy -- Not for Resale

29 of 100 20-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

30 of 100 20-02 Concrete Mixer Service Manual


HYDRAULIC MOTOR Figure 20-10-3

Removal

Remove the mixing drum drive chain. (See Removal on 2


Page 30-50-1.)

IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses, P102709
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
I-2003-0888 Loosen the two set screws (Item 1) [Figure 20-10-3].

Remove the gear (Item 2) [Figure 20-10-3] from the


Figure 20-10-1
hydraulic motor shaft.

Figure 20-10-4
1

Dealer Copy -- Not for Resale


2
3

P102733 1
2
4
Mark and remove the hydraulic hoses (Item 1) [Figure P102786

20-10-1].
Remove the key (Item 1) [Figure 20-10-4] from the
Install caps / plugs on fittings and hoses.
hydraulic motor shaft.
Figure 20-10-2
Remove the two bolts (Item 2), [Figure 20-10-4] and lock
nuts.

Remove the hydraulic motor (Item 3) and plate (Item 4)


[Figure 20-10-4].

P102734

Disconnect the wire harness (Item 1) [Figure 20-10-2].

31 of 100 20-10-1 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D)

Parts Identification

1. Seal
2. Bolt
3. Mounting Flange
4. Seal
5. Seal
6. Bearing Race
7. Thrust Bearing
8. Key
9. Shaft
10. Seal
11. Plug 19
17 18
12. Housing
13. Seal 13
16
14. Drive 15 13
15. Spacer
16. Gerotor
17. End Cap 12 13
18. Seal
19. Bolt 10 11
20
20. Spacer 8

Dealer Copy -- Not for Resale


14
7
3 6
5
4

1
9

2
P102784

32 of 100 20-10-2 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Put the motor mounting flange in a vise.

Disassembly Figure 20-10-7

NOTE: The following pictures may not show your


hydraulic motor exactly as it appears but the
procedure is the same.

Figure 20-10-5

B-10290

Loosen the end cap bolts [Figure 20-10-7].

1 Figure 20-10-8
P-12625
1

Dealer Copy -- Not for Resale


Remove the four bolts (Item 1) [Figure 20-10-5] from the
hydraulic valve. Remove the valve from the motor.

Figure 20-10-6

1 B-10555

Remove the bolts and sealing washers (Item 1) [Figure


20-10-8].

P-12626

Remove the O-rings (Item 1) [Figure 20-10-6] from the


motor.

IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
I-2003-0888

33 of 100 20-10-3 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-11

Disassembly (Cont'd)

Figure 20-10-9

B-10294

Remove the drive spacer [Figure 20-10-11].


B-10292
Figure 20-10-12

Remove the end cap [Figure 20-10-9].

Figure 20-10-10

Dealer Copy -- Not for Resale


B-10295

Remove the wear plate [Figure 20-10-12].


B-10293

Remove the gerotor [Figure 20-10-10].

34 of 100 20-10-4 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-15

Disassembly (Cont'd)

Figure 20-10-13

B-10298

Remove the four bolts from the mounting flange [Figure


B-10296 20-10-15].

NOTE: The bolts will require approximately 34 - 45


Remove the splined shaft [Figure 20-10-13]. N•m (300 - 400 in-lb) torque to loosen. If higher
torque is required, put a small amount of heat
Figure 20-10-14 on the housing near the bolts to loosen the
thread adhesive (Loctite®).

Dealer Copy -- Not for Resale


Figure 20-10-16

B-10297

Remove the output shaft [Figure 20-10-14].


B-10301

Remove the mounting flange [Figure 20-10-16].

35 of 100 20-10-5 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-19

Disassembly (Cont'd)

Figure 20-10-17

B-10302

Remove the hose fitting, then remove the plug [Figure


B-10300 20-10-19].

Inspection
Remove the bearing race and O-ring [Figure 20-10-17].
Clean all parts in solvent and use air pressure to dry
Figure 20-10-18 them. Do not use cloth or paper because small pieces of

Dealer Copy -- Not for Resale


material can get into the system and cause damage.
Flange Inner Side Pressure Seal
Inspect the gerotor for wear and scratches.

Inspect the wear plate.

Inspect the bearing and race.

Dust Seal
Flange Seal Removal Tool
Outer Side

Work From Outer Side of Both (Either) Seals


B-10486

Remove the pressure seal and dust seal from the


mounting flange [Figure 20-10-18].

36 of 100 20-10-6 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-22

Assembly

Always use new O-rings and seals when assembling the


hydraulic motor.

Figure 20-10-20

B-10300

Install the O-ring and bearing race [Figure 20-10-22].

Figure 20-10-23

B-10302

Install the plug [Figure 20-10-20], then install the hose

Dealer Copy -- Not for Resale


fitting.

Figure 20-10-21

B-10301

Install the mounting flange [Figure 20-10-23].

B-10333

Use the correct size driver tool. Install the pressure seal
and dust seal [Figure 20-10-21] into the mounting
flange.

37 of 100 20-10-7 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-26

Assembly (Cont'd)

Figure 20-10-24

B-10296

Install the splined shaft [Figure 20-10-26].


B-10299
Figure 20-10-27

Apply thread adhesive (Loctite® 242) on the bolts. Install


the bolts and alternately tighten each bolt to 28 N•m (250
in-lb) [Figure 20-10-24].

Dealer Copy -- Not for Resale


Figure 20-10-25

B-10295

Install the wear plate [Figure 20-10-27].

B-10297

Install the output shaft [Figure 20-10-25].

38 of 100 20-10-8 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-30

Assembly (Cont'd)

Figure 20-10-28

B-10292

Install the end cap [Figure 20-10-30].


B-10294
Figure 20-10-31

Install the drive spacer [Figure 20-10-28]. 1

Figure 20-10-29

Dealer Copy -- Not for Resale


B-10555

Install the bolts and sealing washers (Item 1) [Figure 20-


B-10293 10-31].

Install the gerotor [Figure 20-10-29].

NOTE: When installing the gerotor (See Timing The


Hydraulic Motor on Page 20-10-11.)

39 of 100 20-10-9 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D) Figure 20-10-33

Assembly (Cont'd)

Figure 20-10-32

P-12626

Install the O-rings (Item 1) [Figure 20-10-33] onto the


motor.
B-10290A B-10291
Figure 20-10-34

Tighten the bolts to 2,8 N•m (25 in-lb) torque. Check that
all seals are in position, then tighten the bolts to 23 N•m 1

Dealer Copy -- Not for Resale


(200 in-lb) torque in the correct sequence [Figure 20-10-
32].

1
P-12625

Install the valve onto the motor. Install the four bolts (Item
1) [Figure 20-10-34] into the hydraulic valve and tighten
bolts.

40 of 100 20-10-10 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT'D)

Assembly (Cont'd)

Timing The Hydraulic Motor

Figure 20-10-35

Gerotor

Star Point
Align With
Drive
Timing Dot

Timing Dot
(Mark Any Drive Tooth)
Align With Shaft
Timing Dot Prior to
Spacer Installing Wear Plate
Plate

Dealer Copy -- Not for Resale


Narrow Land

Timing
Dot - Shaft

Forward Wide Land


Valving
Slot

C-3384

The timing of the motor controls the direction of rotation


of the drive shaft. The timing parts are as follows [Figure
20-10-35].

1. Gerotor.

2. Splined Drive.

3. Output Shaft.

Locate the timing mark on the output shaft. Install the


splined drive and mark any tooth so aligns with the timing
mark.
Install the gerotor with any star point aligned with the
timing mark.
Turn the gerotor to align the holes for the bolts. Be careful
not to disengage the star from the drive or move the
gerotor seal.

41 of 100 20-10-11 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT”D) Figure 20-10-38

Installation
2
Figure 20-10-36 1

3
2

3
P102783

4
3 Using a straight edge (Item 1), align the gear (Item 2) on
1
P102786 the mixing drum with the gear on the hydraulic motor
(Item 3) [Figure 20-10-38]. Failure to align the gears
could cause premature gear and chain failure.
Install the plate (Item 1) and hydraulic motor (Item 2)
[Figure 20-10-36]. When the gears are aligned, tighten the two set screws
(Item 2) [Figure 20-10-37].
Install the two bolts (Item 3), [Figure 20-10-36] and lock

Dealer Copy -- Not for Resale


nuts. Tighten nuts and bolts. Figure 20-10-39

Install the key (Item 4) [Figure 20-10-36] onto the


hydraulic motor shaft.

Figure 20-10-37

1
1

1
2

P102734

Connect the wire harness (Item 1) [Figure 20-10-39].

P102709
P102709

Install the gear (Item 1) onto the hydraulic motor shaft.


Do not tighten set screws (Item 2) [Figure 20-10-37] at
this time.

42 of 100 20-10-12 Concrete Mixer Service Manual


HYDRAULIC MOTOR (CONT’D)

Installation (Cont’d)

Figure 20-10-40

P102733

Install and tighten the hydraulic hoses (Item 1) [Figure


20-10-40].

Install the mixing drum drive chain. (See Installation on

Dealer Copy -- Not for Resale


Page 30-50-2.)

43 of 100 20-10-13 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

44 of 100 20-10-14 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE

Removal

Remove the hydraulic motor. (See Removal on Page 20-


10-1.)

IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
I-2003-0888

Figure 20-20-1

Dealer Copy -- Not for Resale


1
P-12625

Remove the four bolts (Item 1) [Figure 20-20-1] from the


hydraulic valve. Remove the hydraulic valve from the
hydraulic motor.

Figure 20-20-2

P-12626

Remove the O-rings (Item 1) [Figure 20-20-2] from the


hydraulic motor.

45 of 100 20-20-1 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D)

Parts Identification

1. Nut
2. Coil
3. Spool
4. Body
5. Relief Valve
6. Bolt
7. Plug
8. O-ring

6 5

Dealer Copy -- Not for Resale


3

7
7
8 2
8
1

P102785

46 of 100 20-20-2 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D) Figure 20-20-5

Disassembly

1 1

IMPORTANT
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all
parts clean. Always use caps and plugs on hoses,
tubelines and ports to keep dirt out. Dirt can quickly
damage the system.
I-2003-0888 2 P-12635

Figure 20-20-3
Remove the O-rings (Item 1) and back-up rings (Item 2)
[Figure 20-20-5] from the spool.
1
Figure 20-20-6
2

Dealer Copy -- Not for Resale


1

P-12627

Remove the coil nut (Item 1) and coil (Item 2) [Figure 20-
20-3]. P-12629

Figure 20-20-4
Remove the plug (Item 1) [Figure 20-20-6].

P-12628

Remove the spool (Item 1) [Figure 20-20-4] from the


valve body.

47 of 100 20-20-3 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D) Figure 20-20-9

Disassembly (Cont'd)

Figure 20-20-7 1 1

2
P-12633

Remove the O-rings (Item 1) and back-up rings (Item 2)


P-12634 [Figure 20-20-9].

Figure 20-20-10
Remove the O-ring (Item 1) [Figure 20-20-7].

Figure 20-20-8

Dealer Copy -- Not for Resale


1
1

P-12631

P-12630 Remove the two plugs (Item 1) [Figure 20-20-10].

Figure 20-20-11
Remove the relief valve (Item 1) [Figure 20-20-8].

P-12632

Remove the O-ring (Item 1) [Figure 20-20-11] from both


plugs.

48 of 100 20-20-4 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D) Figure 20-20-14

Assembly

Clean all parts in solvent and dry with compressed air. 1 1

Figure 20-20-12

2
P-12633

Apply oil and install the O-rings (Item 1) and back-up


rings (Item 2) [Figure 20-20-14] on the relief valve.

P-12632 Figure 20-20-15

Apply oil to and install the O-ring (Item 1) [Figure 20-20-


1
12] on both plugs.

Dealer Copy -- Not for Resale


Figure 20-20-13

P-12630
1

Install the relief valve (Item 1) [Figure 20-20-15] in the


valve body.

P-12631 Installation: Tighten the relief valve to 41 - 47 N•m (30 -


35 ft-lb) torque.

Install both plugs (Item 1) [Figure 20-20-13] in the valve


body.

49 of 100 20-20-5 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D) Figure 20-20-18

Assembly (Cont'd)

Figure 20-20-16 1
1

2 P-12635

Apply oil to and install the O-rings (Item 1) and back-up


P-12634 rings (Item 2) [Figure 20-20-18] on the spool.

Figure 20-20-19
Apply oil to and install the O-ring (Item 1) [Figure 20-20-
16] on the plug.
1
Figure 20-20-17

Dealer Copy -- Not for Resale


1

P-12628

Install the spool (Item 1) [Figure 20-20-19] in the valve


P-12629 body.

Installation: Tighten the spool to 41 - 47 N•m (30 - 35 ft-


Install the plug (Item 1) [Figure 20-20-17] in the valve lb) torque.
body.

50 of 100 20-20-6 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D)

Assembly (Cont'd)

Figure 20-20-20

P-12627

Install the coil (Item 1) [Figure 20-20-20] on the spool.

Install the coil nut (Item 2) [Figure 20-20-20] on the


spool.

Dealer Copy -- Not for Resale


Installation: Tighten to 3 - 6 N•m (2 - 5 ft-lb) torque.

NOTE: Over tightening the coil nut (Item 2) [Figure 20-


20-20] may cause spool or coil failure.

51 of 100 20-20-7 Concrete Mixer Service Manual


HYDRAULIC CONTROL VALVE (CONT'D)

Installation

Figure 20-20-21

P-12626

Install the O-rings (Item 1) [Figure 20-20-21] onto the


hydraulic motor.

Figure 20-20-22

Dealer Copy -- Not for Resale


2

1
2
P-12625

Install the hydraulic valve (Item 1) [Figure 20-20-22] onto


the hydraulic motor.

Install and tighten the four bolts (Item 2) [Figure 20-20-


22].

Install the hydraulic motor. (See Installation on Page 20-


10-12.)

52 of 100 20-20-8 Concrete Mixer Service Manual


MAINFRAME

BEARING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-10-1
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-10-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-10-3

DRUM ROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-1


Drum Roller Removal And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-1
Disassembly And Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-20-2

GREASE SEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-30-1


Removal And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-30-1

DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-1
Removal And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-1
Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-4
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-6

MIXING DRUM DRIVE CHAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-50-1


Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-50-1

Dealer Copy -- Not for Resale


Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-50-2

SHAFT MOUNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-60-1


Removal And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-60-1

MIXING DRUM DRIVE SPROCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-70-1


Removal And Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-70-1

53 of 100 30-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

54 of 100 30-02 Concrete Mixer Service Manual


BEARING Figure 30-10-2

Removal
2
Remove the shaft mount. (See SHAFT MOUNT on Page
30-60-1.)
1

WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
P102737
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present. Remove the cotter pin (Item 1) and nut (Item 2) [Figure
• Engine is running. 30-10-2].
• Tools are being used.
W-2019-0907
Figure 30-10-3

NOTE: The following pictures may not show your


concrete mixer exactly as it appears but the 1
procedure is the same.

Dealer Copy -- Not for Resale


Figure 30-10-1 2

P102738

Remove the washer (Item 1) and bearing (Item 2)


[Figure 30-10-3].

P102705

Remove the dust cap (Item 1) [Figure 30-10-1].

55 of 100 30-10-1 Concrete Mixer Service Manual


BEARING (CONT'D) Figure 30-10-6

Removal (Cont'd)

Figure 30-10-4

P102880

Remove the bearing (Item 1) [Figure 30-10-6].


P102778
Figure 30-10-7

Remove the shaft (Item 1) [Figure 30-10-4].

Figure 30-10-5

Dealer Copy -- Not for Resale


1

1
P102890

Remove the bearing cup (Item 1) [Figure 30-10-7] from


P102879 both ends of the inner drum.

Remove the seal (Item 1) [Figure 30-10-5].

56 of 100 30-10-2 Concrete Mixer Service Manual


BEARING (CONT'D) Figure 30-10-10

Installation

Clean all parts in solvent and dry with compressed air.

Figure 30-10-8 1

2
P102879

Install the seal (Item 1) [Figure 30-10-10].

Lubricate the seal lip (Item 2) [Figure 30-10-10] with


1
P102890 grease.

Figure 30-10-11
Install the bearing cup (Item 1) [Figure 30-10-8] on both
ends of the inner drum.

Dealer Copy -- Not for Resale


Figure 30-10-9
1

P102778

Install the shaft (Item 1) [Figure 30-10-11].


P102880
NOTE: Apply a light coat of grease to the shaft before
installation.
Pack the bearing with grease and install the bearing
(Item 1) [Figure 30-10-9].

57 of 100 30-10-3 Concrete Mixer Service Manual


BEARING (CONT'D) Figure 30-10-14

Installation (Cont'd)

Figure 30-10-12

P102739

Install and tighten the nut (Item 1) [Figure 30-10-14] to


P102738 16 N•m (12 ft-lb) torque.

Spin the drum.


Pack the bearing with grease and install the bearing
(Item 1) [Figure 30-10-12]. Retorque the nut to 16 N•m (12 ft-lb).

Figure 30-10-13

Dealer Copy -- Not for Resale


Loosen the nut and retighten by hand.

Figure 30-10-15

P102738

P102737
Install the washer (Item 1) [Figure 30-10-13].

Install the cotter pin (Item 1) [Figure 30-10-15].

58 of 100 30-10-4 Concrete Mixer Service Manual


BEARING (CONT'D)

Installation (Cont'd)

Figure 30-10-16

P102705

Install the grease cap (Item 1) [Figure 30-10-16].

Dealer Copy -- Not for Resale

59 of 100 30-10-5 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

60 of 100 30-10-6 Concrete Mixer Service Manual


DRUM ROLLER Figure 30-20-2

Drum Roller Removal And Installation


1
Top Drum Roller

WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
P102711
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running. Remove the roller (Item 1) [Figure 30-20-2].
• Tools are being used.
W-2019-0907
Installation: Install the roller.

Figure 30-20-1 Left And Right Side Drum Roller


3 NOTE: The right side is shown. The procedure is the

Dealer Copy -- Not for Resale


2 same for the left side.

Figure 30-20-3
P102702

1
1
4 P102698

Remove the two bolts (Item 1) from the guard (Item 2) 1


[Figure 30-20-1] on the top drum roller. Remove the
guard. 2
P102757

Remove the lock nut (Item 3) and bolt (Item 4) [Figure


30-20-1]. Remove the lock nut and bolt (Item 1) on the right side
drum roller. Remove the roller (Item 2) [Figure 30-20-3].
Installation: Tighten the bolt until the nut and bolt head
contact the frame, and the roller spins freely. Install Installation: Install the roller, bolt and lock nut. Tighten
guard. the bolt until the nut and bolt head contact the frame, and
the roller spins freely.

61 of 100 30-20-1 Concrete Mixer Service Manual


DRUM ROLLER (CONT'D) Figure 30-20-6

Disassembly And Assembly

Figure 30-20-4

P12684

Remove the bearing (Item 1) [Figure 30-20-6] from the


P12682 roller.

Installation: Apply grease to the bearing. Install the


Remove the bushing (Item 1) [Figure 30-20-4]. bearing into the roller.

Installation: Install the bushing. Figure 30-20-7

Dealer Copy -- Not for Resale


Figure 30-20-5

P12685

P12683
Remove the sleeve (Item 1) [Figure 30-20-7] from the
roller.
Remove the bearing retainer (Item 1) [Figure 30-20-5]
from both sides of the roller. Installation: Install the sleeve into the roller.

Installation: Install the bearing retainer on both sides of


the roller.

62 of 100 30-20-2 Concrete Mixer Service Manual


GREASE SEAL

Removal And Installation

Remove the shaft mount. (See SHAFT MOUNT on Page


30-60-1.)

Figure 30-30-1

P102778

Remove the seal (Item 1) [Figure 30-30-1].

Dealer Copy -- Not for Resale


Installation: Lubricate the seal lip before installing the
seal over the shaft.

63 of 100 30-30-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

64 of 100 30-30-2 Concrete Mixer Service Manual


DRUM Figure 30-40-2

Removal And Installation

Remove the drum rollers. (See DRUM ROLLER on Page


30-20-1.)

Remove the mixing drum drive chain. (See MIXING


DRUM DRIVE CHAIN on Page 30-50-1.)

Figure 30-40-1
1

P102770

1 2 Raise the concrete mixer, allowing it to pivot on the


mounting frame. Place blocking (Item 1) [Figure 30-40-2]
under the concrete mixer. Lower the concrete mixer onto
1 2 the blocking.

NOTE: While raising and lower the concrete mixer,


the mounting frame should stay in contact

Dealer Copy -- Not for Resale


P102769 with the ground. This will keep the concrete
mixer stable as it is being placed onto the
blocking.
Reinstall the three drum roller bolts (Item 1) [Figure 30-
40-1] and nuts. Tighten the bolts until the nut and bolt
head contact the frame.

Install chains (Item 2) [Figure 30-40-1] to the three roller WARNING


bolts.
AVOID INJURY OR DEATH
NOTE: Use chains that are in good condition and of
Securely block up the attachment before working
adequate size to lift the attachment.
underneath.
W-2795-0409

WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-0907

65 of 100 30-40-1 Concrete Mixer Service Manual


DRUM (CONT'D) Figure 30-40-5

Removal And Installation (Cont’d)


1
Figure 30-40-3

P102738

Remove the washer (Item 1) and bearing (Item 2)


P102705 [Figure 30-40-5].

Installation: Pack bearing with grease, install the


Remove the dust cap (Item 1) [Figure 30-40-3]. bearing and washer.

Installation: Install the dust cap. Figure 30-40-6

Dealer Copy -- Not for Resale


Figure 30-40-4

1 1

1
P102986

P102737
Install chains (Item 1) to the mixing blades [Figure 30-
40-6].
Remove the cotter pin (Item 1) and nut (Item 2) [Figure
30-40-4].

Installation: Install nut and tighten nut. Install cotter pin.

66 of 100 30-40-2 Concrete Mixer Service Manual


DRUM (CONT'D)

Removal And Installation (Cont’d)

Figure 30-40-7

P102771

Remove the drum (Item 1) [Figure 30-40-7].

Installation: Install the drum.

Dealer Copy -- Not for Resale

67 of 100 30-40-3 Concrete Mixer Service Manual


DRUM (CONT'D)

Parts Identification

1. Dust Cap
2. Cotter Pin
3. Castle Nut
4. Washer
5. Bearing
6. Cup
7. Drum
8. Shaft
9. Seal

1
3

Dealer Copy -- Not for Resale


5
7

P102768

68 of 100 30-40-4 Concrete Mixer Service Manual


DRUM (CONT'D) Figure 30-40-9

Disassembly

NOTE: The following pictures may not show your


concrete mixer exactly as it appears but the
procedure is the same.
1

WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any P102773
of the following conditions exist:
• When fluids are under pressure.
• Flying debris or loose material is present. Remove the bearing (Item 1) [Figure 30-40-9].
• Engine is running.
• Tools are being used. Figure 30-40-10
W-2019-0907

Figure 30-40-8

Dealer Copy -- Not for Resale


1

P102774

Remove bearing cup (Item 1) [Figure 30-40-10] on both


P102772
sides of the drum.

Remove the seal (Item 1) [Figure 30-40-8].

69 of 100 30-40-5 Concrete Mixer Service Manual


DRUM (CONT'D) Figure 30-40-13

Assembly

Clean all parts in solvent and dry with compressed air.

Figure 30-40-11
1

1
P102772

Apply grease to the seal lip and install the seal (Item 1)
[Figure 30-40-13].

P102774 Figure 30-40-14

Install the bearing cup (Item 1) [Figure 30-40-11] on both


sides of the drum.

Dealer Copy -- Not for Resale


1

Figure 30-40-12

1
P102771

Install the drum (Item 1) [Figure 30-40-14] onto the


shaft.

P102773 NOTE: Apply grease to the shaft before installation of


the drum.

Pack the bearing with grease, and install the bearing


(Item 1) [Figure 30-40-12].

70 of 100 30-40-6 Concrete Mixer Service Manual


MIXING DRUM DRIVE CHAIN Figure 30-50-3

Removal

WARNING
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
• When fluids are under pressure. 2
• Flying debris or loose material is present. P102787
• Engine is running.
• Tools are being used.
W-2019-0907 Loosen the two lock nuts (Item 1) [Figure 30-50-3] and
bolts on the hydraulic motor mount (Item 2).
Figure 30-50-1
Figure 30-50-4

Dealer Copy -- Not for Resale


1 1 1

P102708
P102728

Remove the master link (Item 1) [Figure 30-50-4] from


Remove the two bolts (Item 1) and nuts from the access the drive chain.
cover (Item 2) [Figure 30-50-1].
Remove the drive chain.
Figure 30-50-2

P102695

Open the cover and place a bolt (Item 1) [Figure 30-50-


2] through the hole to hold the cover open.

71 of 100 30-50-1 Concrete Mixer Service Manual


MIXING DRUM DRIVE CHAIN (CONT’D) Figure 30-50-7

Installation

NOTE: Before installing the drive chain, check the


alignment of the drive gears.

Figure 30-50-5
2

2 1
1

P102708

Install the drive chain (Item 1) and master link (Item 2)


[Figure 30-50-7].

Figure 30-50-8
P102783
6,35 mm
(0.250 in)
Using a straight edge (Item 1), align the gear (Item 2)

Dealer Copy -- Not for Resale


[Figure 30-50-5] on the mixing drum with the gear on the
hydraulic motor. Failure to align the gears could cause 1
premature gear and chain failure.

Figure 30-50-6

2 2 P102695

1 Adjust the drive chain (Item 1) [Figure 30-50-8] to 6,35


mm (0.250 in) movement.

Move the hydraulic motor (Item 2) [Figure 30-50-8] away


from the mixer to tighten the chain tension.

When the chain tension is correct, tighten the hydraulic


P102709 motor mount bolts (Item 1) [Figure 30-50-6].

NOTE: If adjustment is required, loosen the two set


screws (Item 1) on the hydraulic motor drive
gear (Item 2) [Figure 30-50-6], adjust gear and
tighten set screws.

72 of 100 30-50-2 Concrete Mixer Service Manual


MIXING DRUM DRIVE CHAIN (CONT’D)

Installation (Cont’d)

Figure 30-50-9

2
2

1
P102728

Close the cover (Item 1), reinstall bolts (Item 2) [Figure


30-50-9] and nuts. Tighten the bolts.

Dealer Copy -- Not for Resale

73 of 100 30-50-3 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

74 of 100 30-50-4 Concrete Mixer Service Manual


SHAFT MOUNT Figure 30-60-2

Removal And Installation


Remove the mixing drum drive chain. (See MIXING 2
DRUM DRIVE CHAIN on Page 30-50-1.)

WARNING
1
AVOID INJURY OR DEATH
Wear safety glasses to prevent eye injury when any
of the following conditions exist: P102776

• When fluids are under pressure.


• Flying debris or loose material is present. Remove the lock nut (Item 1) and washer (Item 2)
• Engine is running. [Figure 30-60-2].
• Tools are being used.
W-2019-0907 Installation: Install the washer and lock nut.

Figure 30-60-3
Figure 30-60-1

Dealer Copy -- Not for Resale


1
1

P102713
P102710

Place blocks (Item 1) [Figure 30-60-3] under the mixer


Remove the grease fitting (Item 1) [Figure 30-60-1]. drum.
NOTE: Remove the grease fitting to prevent damage
to the fitting.

Installation: Install the grease fitting.


WARNING
AVOID INJURY OR DEATH
Securely block up the attachment before working
underneath.
W-2795-0409

75 of 100 30-60-1 Concrete Mixer Service Manual


SHAFT MOUNT (CONT’D) Figure 30-60-6

Removal And Installation (Cont’d)


2 1
Figure 30-60-4

1 1
P102714

Remove the shaft mount nuts (Item 1) and wire clamp


P102713 (Item 2) [Figure 30-60-6].

Remove the shaft mount bolts (Item 1) [Figure 30-60-5].


Loosen the set screw (Item 1) [Figure 30-60-4].
Installation: Install the bolts, wire clamp, nuts and
Installation: Tighten the set screw. tighten bolts.

Dealer Copy -- Not for Resale


Figure 30-60-5 Figure 30-60-7

1 1
1

P102713 P102777

Remove the shaft mount (Item 1) [Figure 30-60-7].

Installation: Install the shaft mount.

76 of 100 30-60-2 Concrete Mixer Service Manual


MIXING DRUM DRIVE SPROCKET

Removal And Installation

Remove the shaft mount. (See SHAFT MOUNT on Page


30-60-1.)

Figure 30-70-1

P102778

Remove the three bolts (Item 1) and the sprocket (Item 2)

Dealer Copy -- Not for Resale


[Figure 30-70-1].

Installation: Install sprocket and bolts. Tighten the bolts.

77 of 100 30-70-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

78 of 100 30-70-2 Concrete Mixer Service Manual


ELECTRICAL SYSTEM

REMOTE ATTACHMENT CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-10-1


Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-10-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-10-3

Dealer Copy -- Not for Resale

79 of 100 40-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

80 of 100 40-02 Concrete Mixer Service Manual


REMOTE ATTACHMENT CONTROL Figure 40-10-3

Removal

Figure 40-10-1

2 2 1

3 2
P102782

2
2
P102699

1 Remove the nut (Item 1) [Figure 40-10-3] from the key


P102701 switch.

Remove the key switch (Item 2) [Figure 40-10-3] from


Remove the key (Item 1) [Figure 40-10-1] from the key the back of the panel.
switch.
Figure 40-10-4
Remove the four screws (Item 2). Pull the remote

Dealer Copy -- Not for Resale


attachment control panel (Item 3) [Figure 40-10-1] away
from the attachment. 3

Figure 40-10-2

1 P102780
1
1
2 2
P102779

Loosen the two adjustment screws (Item 1) [Figure 40-


1 1 10-4].
P102700
Rotate the collar (Item 2) counterclockwise to remove the
collar from the engine stop switch (Item 3) [Figure 40-10-
Disconnect the wire harnesses (Item 1). Remove the 4].
remote attachment control panel (Item 2) [Figure 40-10-
2].

81 of 100 40-10-1 Concrete Mixer Service Manual


REMOTE ATTACHMENT CONTROL (CONT'D)

Removal (Cont’d)

Figure 40-10-5

P102699

Remove the engine stop switch (Item 1) from the front of


the panel (Item 2) [Figure 40-10-5].

Figure 40-10-6

Dealer Copy -- Not for Resale


1
1

1 3
1

P102781

Remove the screws (Item 1) and remove the attachment


control display (Item 2) from the panel (Item 3) [Figure
40-10-6].

82 of 100 40-10-2 Concrete Mixer Service Manual


REMOTE ATTACHMENT CONTROL (CONT'D) Figure 40-10-9

Installation
2
Figure 40-10-7

3
1
3

1 P102780

3
1
2 P102779
3
3
Place the collar (Item 1) onto the engine stop switch (Item
P102781 2) [Figure 40-10-9]. Rotate the collar clockwise to install
the collar onto the engine stop switch.

Install the attachment control display (Item 1) onto the Tighten the two adjustment screws (Item 3) [Figure 40-
panel (Item 2) [Figure 40-10-7]. 10-9] to prevent the switch from turning.

Install the four screws (Item 3) [Figure 40-10-7] and

Dealer Copy -- Not for Resale


Figure 40-10-10
tighten screws.

Figure 40-10-8

1
1
P102782

P102699

P102987 Install the key switch (Item 1) through the back panel.
Install nut (Item 2) [Figure 40-10-10] and tighten.

Install the engine stop switch (Item 1) [Figure 40-10-8]


through the front panel.

83 of 100 40-10-3 Concrete Mixer Service Manual


REMOTE ATTACHMENT CONTROL (CONT'D)

Installation (Cont’d)

Figure 40-10-11

1
2

1 1
P102700

Connect the wire connectors (Item 1) to the attachment


control panel (Item 2) [Figure 40-10-11].

Figure 40-10-12

Dealer Copy -- Not for Resale


2 2

2
2

3
P102701

Install the remote attachment control panel (Item 1) onto


the attachment. Install the four screws (Item 2) [Figure
40-10-12] and tighten screws.

Install the key (Item 3) [Figure 40-10-12].

84 of 100 40-10-4 Concrete Mixer Service Manual


SPECIFICATIONS

(CONCRETE MIXER) SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-1


Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-1
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-2
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-10-2

HYDRAULIC SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-20-1

ELECTRICAL SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-30-1

TORQUE SPECIFICATIONS FOR BOLTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1


Torque For General SAE Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-1
Torque For General Metric Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-40-2

HYDRAULIC CONNECTION SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-1


O-ring Face Seal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-1
Straight Thread O-ring Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-1
Tubelines And Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-1
Flare Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-2

Dealer Copy -- Not for Resale


Port Seal Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPEC-50-2

85 of 100 SPEC-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

86 of 100 SPEC-02 Concrete Mixer Service Manual


(CONCRETE MIXER) SPECIFICATIONS

Dimensions

• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by parentheses.

• Where applicable, specifications conform to SAE and ISO standards and are subject to change without notice.

Dealer Copy -- Not for Resale


B A

NA7008

DESCRIPTION CONCRETE MIXER


Width (A) 1148 mm (45.20 in)
Length (B) 1096 mm (43.16 in)
Height (C) 1019 mm (40.12 in)

Performance

DESCRIPTION CONCRETE MIXER


Weight 200 kg (440 lb)
Center of Gravity 335 mm (13.2 in)
Rotation Bi-rotational
Chain #50 STD Roller
Drum Speed 20 rpm @ 42 L/min (11 U.S. gpm)

87 of 100 SPEC-10-1 Concrete Mixer Service Manual


(CONCRETE MIXER) SPECIFICATIONS (CONT’D)

Hydraulic System

DESCRIPTION CONCRETE MIXER


Hydraulic Flow 34 - 76 L/min (9 - 20 U.S. gpm)
Maximum Hydraulic Flow 83 L/min (22 U.S. gpm)

Capacities

DESCRIPTION CONCRETE MIXER


Capacity 0.20 m3 (6.9 ft3)

Dealer Copy -- Not for Resale

88 of 100 SPEC-10-2 Concrete Mixer Service Manual


HYDRAULIC SCHEMATIC

Dealer Copy -- Not for Resale


SI

A B

MALE FEMALE
COUPLER COUPLER

TS-01697

89 of 100 SPEC-20-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

90 of 100 SPEC-20-2 Concrete Mixer Service Manual


ELECTRICAL SCHEMATIC

Dealer Copy -- Not for Resale

NA7026

91 of 100 SPEC-30-1 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

92 of 100 SPEC-30-2 Concrete Mixer Service Manual


TORQUE SPECIFICATIONS FOR BOLTS

Torque For General SAE Bolts

The following table shows standard torque specifications for bolts with zinc phosphate coating. Bolts purchased from
Bobcat Company that have zinc phosphate coating are specified by the letter H following the part number.

Thread
SAE Grade 5 SAE Grade 8
Size
N•m 0.250 9,0 - 10,2 12,4 - 13,6
(in-lb) (80 - 90) (110 - 120)
0.3125 20,3 - 22,6 24,2 - 27,1
(180 - 200) (215 - 240)
N•m 0.375 34 - 38 47 - 54
(ft-lb) (25 - 28) (35 - 40)
0.4375 54 - 61 81 - 88
(40 - 45) (60 - 65)
0.500 88 - 95 122 - 136
(65 - 70) (90 - 100)
0.5625 122 - 136 170 - 190
(90 - 100) (125 - 140)

Dealer Copy -- Not for Resale


0.625 170 - 190 240 - 260
(125 - 140) (175 - 190)
0.750 300 - 330 410 - 450
(220 - 245) (300 - 330)
0.875 450 - 490 645 - 710
(330 - 360) (475 - 525)
1.000 645 - 710 985 - 1085
(475 - 525) (725 - 800)
1.125 880 - 975 1425 - 1600
(650 - 720) (1050 - 1175)
1.250 1200 - 1360 2000 - 2200
(900 - 1000) (1475 - 1625)
1.375 1630 - 1830 2720 - 2980
(1200 - 1350) (2000 - 2200)
1.500 2040 - 2240 3530 - 3870
(1500 - 1650) (2600 - 2850)
1.625 2720 - 2980 4680 - 5150
(2000 - 2800) (3450 - 3800)
1.750 3390 - 3730 5830 - 6500
(2500 - 2750) (4300 - 4800)
1.875 4270 - 4750 7450 - 8300
(3150 - 3500) (5500 - 6100)
2.000 5150 - 5700 8800 - 9800
(3800 - 4200) (6500 - 7200)

93 of 100 SPEC-40-1 Concrete Mixer Service Manual


TORQUE SPECIFICATIONS FOR BOLTS (CONT'D)

Torque For General Metric Bolts

THREAD SIZE MATERIAL


(DIA. X PITCH) HEAD MARK 4 HEAD MARK 7 HEAD MARK 10
M 5 x 0.8 4 - 5 N•m
(3 - 4 ft-lb)
M 6 x 1.0 8 - 9 N•m 8 - 12 N•m
(6 - 7 ft-lb) (6 - 9 ft-lb)
M 8 x 1.25 8 - 12 N•m 15 - 22 N•m 24 - 34 N•m
(6 - 9 ft-lb) (11 - 16 ft-lb) (18 - 25 ft-lb)
M 10 x 1.25 18 - 24 N•m 30 - 41 N•m 49 - 68 N•m
(13 - 18 ft-lb) (22 - 30 ft-lb) (36 - 50 ft-lb)
M 12 x 1.25 30 - 41 N•m 54 - 73 N•m 94 - 118 N•m
(22 - 30 ft-lb) (40 - 54 ft-lb) (69 - 87 ft-lb)
M 14 x 1.25 49 - 68 N•m 79 - 108 N•m 157 - 186 N•m
(36 - 50 ft-lb) (58 - 80 ft-lb) (116 - 137 ft-lb)

Dealer Copy -- Not for Resale

94 of 100 SPEC-40-2 Concrete Mixer Service Manual


HYDRAULIC CONNECTION SPECIFICATIONS Straight Thread O-ring Fitting

O-ring Face Seal Connection Figure SPEC-50-2

IMPORTANT
Nut Nut
When repairing hydrostatic and hydraulic systems,
clean the work area before disassembly and keep all Washer
parts clean. Always use caps and plugs on hoses, Washer
tubelines and ports to keep dirt out. Dirt can quickly O-ring
damage the system.
I-2003-0888 O-ring

Figure SPEC-50-1
A-1852

Lubricate the O-ring before installing the fitting. Loosen


the jam nut and install the fitting. Tighten the jam nut until
the washer is tight against the surface [Figure SPEC-50-
2].

Dealer Copy -- Not for Resale


Tubelines And Hoses

Replace any tubelines that are bent or flattened. They will


restrict flow, which will slow hydraulic action and cause
heat.

B-7575 Replace hoses which show signs of wear, damage or


weather cracked rubber.

When the fitting is tightened, you can feel when the fitting Always use two wrenches when loosening and tightening
is tight to eliminate leakage caused by under or over hose or tubeline fittings.
torqued fittings. Use petroleum jelly to hold the O-ring in
position until the fittings are assembled [Figure SPEC-
50-1].

O-ring Face Seal Tightening Torque


xTubeline xx TORQUE
Outside x N•m
Diameter Thread Size (ft-lb)
1/4” 9/16” - 18 18 (13)
3/8” 11/16” - 16 30 (22)
1/2” 13/16” - 16 54 (40)
5/8” 1” - 14 81 (60)
3/4” 1-3/16” - 12 114 (84)
7/8” 1-3/16” - 12 133 (98)
1” 1-7/16” - 12 160 (118)
1-1/4” 1-11/16” - 12 209 (154)
1-1/2” 2” - 12 221 (163)

95 of 100 SPEC-50-1 Concrete Mixer Service Manual


HYDRAULIC CONNECTION SPECIFICATIONS Port Seal Fitting
(CONT’D)
Figure SPEC-50-4
Flare Fitting

Figure SPEC-50-3

1
Nut Seals
To Fitting

Nut Seals
2 To Port

P-79498

Secondary O-ring Seal P-13008


Use the following procedure to tighten the flare fitting:

Dealer Copy -- Not for Resale


Tighten the nut until it makes contact with the seat. Make The nut is the primary seal, the O-ring is the secondary
a mark across the flats of both the male and female parts seal and helps absorb vibration and pressure pulses at
of the connection (Item 1) [Figure SPEC-50-3] the connection [Figure SPEC-50-4].

Use the chart (below) to find the correct tightness needed The hex portion of the nut does not contact the surface of
(Item 2) [Figure SPEC-50-3]. If the fitting leaks after the component when the nut is tight.
tightening, disconnect it and inspect the seat area for
damage. Port Seal and O-ring Boss
Tightening Torque
Flare Fitting Tightening Torque x TORQUE
Tubeline x TORQUE x N•m
Outside x N•m Thread Size (ft-lb)
Diameter Thread Size (ft-lb) 7/16” - 20 18 (13)
1/4” 7/16” - 20 18 (13) 9/16” - 18 30 (22)
5/16” 1/2” - 20 23 (17) 3/4” -1 6 54 (40)
3/8” 9/16” - 18 30 (22) 7/8” - 14 81 (60)
1/2” 3/4” - 16 54 (40) 1-1/16” - 12 114 (84)
5/8” 7/8” - 14 81 (60) 1-3/16” - 12 133 (98)
3/4” 1-1/16” - 12 114 (84) 1-5/16” - 12 160 (118)
7/8” 1-3/16” - 12 133 (98) 1-7/16” - 12 209 (154)
1” 1-5/16” - 12 160 (118) 1-5/8” - 12 221 (163)
1-1/4” 1-5/8” - 12 209 (154)
1-1/2” 1-7/8” - 12 221 (163)
2” 2-1/2” - 12 342 (252)

96 of 100 SPEC-50-2 Concrete Mixer Service Manual


HYDRAULIC CONNECTION SPECIFICATIONS
(CONT’D)

Port Seal Fitting (Cont’d)

Use the following procedure to tighten the port seal


fitting:

Port seal and nut, washer and O-ring (O-ring Boss)


fittings use the same tightening torque valve chart.

If a torque wrench cannot be used, use the following


method.

Tighten the nut until it just makes metal to metal contact,


you can feel the resistance.

Tighten the nut with a wrench no more than one hex flat
maximum.

Do not over tighten the port seal fitting.

NOTE: If a torque wrench cannot be used, use the


hex flat tightening method as an approximate

Dealer Copy -- Not for Resale


guideline.

NOTE: Port seal fittings are not recommended in all


applications. Use O-ring boss fittings in these
applications.

97 of 100 SPEC-50-3 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

98 of 100 SPEC-50-4 Concrete Mixer Service Manual


ALPHABETICAL INDEX

(CONCRETE MIXER) SPECIFICATIONS


. . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEC-10-1
ATTACHMENT IDENTIFICATION . . . . . . . . 1-8
ATTACHMENT STORAGE AND RETURN TO
SERVICE . . . . . . . . . . . . . . . . . . . . . . . 10-50-1
BEARING . . . . . . . . . . . . . . . . . . . . . . . 30-10-1
DAILY INSPECTION . . . . . . . . . . . . . . . 10-20-1
DELIVERY REPORT . . . . . . . . . . . . . . . . . 1-7
DIAGNOSTIC SERVICE CODES . . . . . 10-41-1
DRUM ROLLER . . . . . . . . . . . . . . . . . . 30-20-1
DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . 30-40-1
ELECTRICAL SCHEMATIC . . . . . . SPEC-30-1
FEATURES AND ACCESSORIES . . . . . . . 1-9
GREASE SEAL . . . . . . . . . . . . . . . . . . 30-30-1
HYDRAULIC CONNECTION
SPECIFICATIONS . . . . . . . . . . . . . SPEC-50-1
HYDRAULIC CONTROL VALVE . . . . . 20-20-1

Dealer Copy -- Not for Resale


HYDRAULIC MOTOR . . . . . . . . . . . . . . 20-10-1
HYDRAULIC SCHEMATIC . . . . . . . SPEC-20-1
LUBRICATING THE CONCRETE MIXER
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-30-1
MAINTENANCE SAFETY . . . . . . . . . . . . . 1-1
MIXING DRUM DRIVE CHAIN . . . . . . . 30-50-1
MIXING DRUM DRIVE SPROCKET . . 30-70-1
REGULAR MAINTENANCE . . . . . . . . . 10-40-1
REMOTE ATTACHMENT CONTROL . . 40-10-1
SERIAL NUMBER LOCATION . . . . . . . . . . 1-7
SHAFT MOUNT . . . . . . . . . . . . . . . . . . 30-60-1
TORQUE SPECIFICATIONS FOR BOLTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . SPEC-40-1
TROUBLESHOOTING . . . . . . . . . . . . . 10-10-1

99 of 100 INDEX-01 Concrete Mixer Service Manual


Dealer Copy -- Not for Resale

100 of 100 INDEX-02 Concrete Mixer Service Manual

You might also like