Skip to main content

966M Caterpillar Wheel Loader Service Manual

Page 1


Note: Use Bookmarks panel to navigate





Product: WHEEL LOADER

Model: 966M WHEEL LOADER LMM

Configuration: 966M Wheel Loader LMM00001-UP (MACHINE) POWERED BY C9.3 Engine

Disassembly and Assembly

966M, 966M Series XE, 972M and 972M Series XE Wheel Loaders

Accumulator (Steering, Pilot) - Remove and Install

SMCS - 4331-010; 5077-010

S/N - A8P1-UP

S/N - B8P1-UP

S/N - DYC1-UP

S/N - EDW1-UP

S/N - EJA1-UP

S/N - FL21-UP

S/N - GGN1-UP

S/N - JPR1-UP

S/N - KJP1-UP

S/N - L9S1-UP

S/N - LMM1-UP

S/N - LSJ1-UP

S/N - M5S1-UP

S/N - P6C1-UP

Removal Procedure

Start By:

i05224851

a. Connect the steering frame lock

b. release the system hydraulic pressure.

c. Retain the hydraulic tank oil.

Illustration 1

1. Remove the bolts and open door (1).

Illustration 2

2. Remove steering and pilot oil accumulator (2).

g03337982
g03338708

This is the sample of the manual

Click on the download link for complete manual

3. Remove O-ring seal (3) from steering and pilot oil accumulator (2).

Installation Procedure

1. Install steering and pilot oil accumulator (2) in the reverse order of removal.

Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Wed May 7 09:54:48 UTC+0530 2025

Product: WHEEL LOADER

Model: 966M WHEEL LOADER LMM

Configuration: 966M Wheel Loader LMM00001-UP (MACHINE) POWERED BY C9.3 Engine

Disassembly and Assembly

966M, 966M Series XE, 972M and 972M Series XE Wheel Loaders Media

Blower Motor (Air Conditioner and Heater) - Remove and Install

SMCS - 7304-010-FM; 7309-010-FM; 7309-011-FM; 7311-010-FM; 7320-010-FM

S/N - A8P1-UP

S/N - B8P1-UP

S/N - DYC1-UP

S/N - EDW1-UP

S/N - EJA1-UP

S/N - FL21-UP

S/N - GGN1-UP

S/N - JPR1-UP

S/N - KJP1-UP

S/N - L9S1-UP

S/N - LMM1-UP

S/N - LSJ1-UP

S/N - M5S1-UP

S/N - P6C1-UP

Removal Procedure

i05667489

Start By:

a. Remove the seat.

1

1. Remove four screws (1) and lower display assembly (2) out of the way.

2

2. Remove eight screws (3) and air duct (4).

3

Illustration
g03615078
Illustration
g03615118
Illustration
g03615544

3. Remove screw (5).

4. Remove holder (10). Remove four screws (8). Fold floor mat (9) out of the way. Carefully remove panel (6). There are three locking tabs (X) at the top on the opposite side of panel (6). Disconnect the harness assembly for auxiliary power port (7).

Illustration 4
g03615658
Illustration 5
g03615757
Illustration 6
g03615796

5. Remove two screws (12). Fold floor mat (9) back and slide duct (11) out in order to disconnect harness assemblies (13). Remove air duct (11).

8

6. Remove six screws (14) and lower blower motor support bracket (15).

9

7. Disconnect harness assemblies (17). Separate blower motor (16) from blower motor support bracket (15).

Illustration 7
g03615817
Illustration
g03615838
Illustration
g03615876

Installation Procedure

1. Install blower motor (16) in the reverse order of the removal.

Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Wed May 7 10:41:42 UTC+0530 2025

Product: WHEEL LOADER

Model: 966M WHEEL LOADER LMM

Configuration: 966M Wheel Loader LMM00001-UP (MACHINE) POWERED BY C9.3 Engine

Disassembly and Assembly

966M, 966M Series XE, 972M and 972M Series XE Wheel Loaders

Media Number -UENR5562-07

Brake Accumulator - Assemble

SMCS - 4263-016

S/N - A8P1-UP

S/N - B8P1-UP

S/N - DYC1-UP

S/N - EDW1-UP

S/N - EJA1-UP

S/N - FL21-UP

S/N - GGN1-UP

S/N - JPR1-UP

S/N - KJP1-UP

S/N - L9S1-UP

S/N - LMM1-UP

S/N - LSJ1-UP

S/N - M5S1-UP

S/N - P6C1-UP

Assembly Procedure

Table 1

-23/02/2018

i05223496

1

1. Install seals (21), (20), (19), (18), (17), (16), and (15) to piston (14).

2

Install piston (14).

Illustration
g03338263
Illustration
g03338262
2.

Illustration 3

g03338249

3. Install backup ring (13) and O-ring seal (12) to end cap (11).

Illustration 4

g03338241

4. Use Tooling (B) in order to install end cap (11). Tighten end cap (11) to a torque of 122 ± 10 N·m (90 ± 7 lb ft).

Illustration 5

5. Install the O-ring seal and fitting (10).

g03338209

Illustration 6

6. Install backup ring (8) and O-ring seal (9) to end cap (7).

Illustration 7

g03338126

7. Use Tooling (A) in order to install end cap (7). Tighten end cap (7) to a torque of 122 ± 10 N·m (90 ± 7 lb ft).

Illustration 8

8. Install O-ring seal (6) to valve (5).

g03338202
g03338105

Illustration 9

g03338102

9. Install valve (5). Tighten valve (5) to a torque of 35.0 ± 1.5 N·m (25.81 ± 1.11 lb ft).

Illustration 10

10. Install schrader valve (4).

g03338090

11. Charge the accumulator. Refer to Special Instruction, "Accumulator Discharging and Charging Procedures" for the proper procedure.

Illustration 11

g03338088

12. Install valve cap (3). Tighten valve cap (3) to a torque of 1.6 ± 1.0 N·m (14.16 ± 8.85 lb in).

Illustration 12 g03338076

13. Install protector (2) to brake accumulator (1).

14. Repeat Steps 1 through 13 for the remaining brake accumulator.

End By:

a. Install the brake accumulator.

Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Wed May 7 10:09:37 UTC+0530 2025

Product: WHEEL LOADER

Model: 966M WHEEL LOADER LMM

Configuration: 966M Wheel Loader LMM00001-UP (MACHINE) POWERED BY C9.3 Engine

Disassembly and Assembly

966M, 966M Series XE, 972M and 972M Series XE Wheel Loaders

Brake Accumulator - Disassemble

SMCS - 4263-015

S/N - A8P1-UP

S/N - B8P1-UP

S/N - DYC1-UP

S/N - EDW1-UP

S/N - EJA1-UP

S/N - FL21-UP

S/N - GGN1-UP

S/N - JPR1-UP

S/N - KJP1-UP

S/N - L9S1-UP

S/N - LMM1-UP

S/N - LSJ1-UP

S/N - M5S1-UP

S/N - P6C1-UP

Disassembly Procedure

Table 1

i05221999

Required Tools

Start By:

a. Remove the brake accumulator.

The accumulator is filled with dry nitrogen. Sudden release of nitrogen pressure can cause personal injury.

To avoid personal injury, release the nitrogen pressure from the accumulator before disassembly.

Illustration 1

1. Remove protector (2) from brake accumulator (1).

g03338076

2

2. Remove valve cap (3).

3. Discharge the accumulator. Refer to Special Instruction, "Accumulator Discharging and Charging Procedures" for the proper procedure.

Illustration 3

4. Remove schrader valve (4).

g03338090

Illustration 4

5. Remove valve (5).

g03338102

Illustration
g03338088

Illustration 5

6. Remove O-ring seal (6) from valve (5).

Illustration 6

g03338126

7. Use Tooling (A) in order to remove end cap (7).

Illustration 7

g03338202

8. Remove O-ring seal (9) and backup ring (8) from end cap (7).

g03338105

Illustration 8

9. Remove fitting (10) and the O-ring seal.

g03338209

Illustration 9

g03338241

10. Use Tooling (B) in order to remove end cap (11).

Illustration 10

g03338249

11. Remove O-ring seal (12) and backup ring (13) from end cap (11).

Illustration 11

12. Remove piston (14).

g03338262

Illustration 12

g03338263

13. Remove seals (15), (16), (17), (18), (19), (20), and (21) from piston (14).

14. Repeat Steps 1 through 13 for the remaining brake accumulator.

Copyright 1993 - 2025 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Wed May 7 10:09:19 UTC+0530 2025

Product: WHEEL LOADER

Model: 966M WHEEL LOADER LMM

Configuration: 966M Wheel Loader LMM00001-UP (MACHINE) POWERED BY C9.3 Engine

Disassembly and Assembly

966M, 966M Series XE, 972M and 972M Series XE Wheel Loaders

Brake Accumulator - Remove and Install

SMCS - 4263-010

S/N - A8P1-UP

S/N - B8P1-UP

S/N - DYC1-UP

S/N - EDW1-UP

S/N - EJA1-UP

S/N - FL21-UP

S/N - GGN1-UP

S/N - JPR1-UP

S/N - KJP1-UP

S/N - L9S1-UP

S/N - LMM1-UP

S/N - LSJ1-UP

S/N - M5S1-UP

S/N - P6C1-UP

Removal Procedure

Start By:

i05221803

a. Connect the steering frame lock.

b. Release the system hydraulic pressure.

c. Retain the hydraulic tank oil.

1

1. Remove the bolts and open door (1).

2

2. Remove platform (2).

Illustration
g03337982
Illustration
g03337987

This is the sample of the manual

Click on the download link for complete manual

Illustration 3

3. Disconnect hose assembly (3).

g03337991

Illustration 4

4. Remove bolts (4).

Illustration 5

g03338003

5. Remove clamp (5) and remove brake accumulator (6).

6

g03338028

g03337997
Illustration

Turn static files into dynamic content formats.

Create a flipbook