The document provides instructions for disassembling and assembling the freewheel stator component of a 972H wheel loader torque converter. The disassembly procedure involves using tools to remove over 20 individual parts from the torque converter housing. The assembly procedure lists similar steps to reinstall the parts in reverse order, noting required tools and proper torque specifications for fasteners. Cleanliness is emphasized throughout to prevent dirt from entering internal mechanisms.
2. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 972H WHEEL LOADER WXZ
Configuration: 972H Wheel Loader WXZ00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
966H and 972H Wheel Loaders PowerTrain
Media Number -UENR3301-01 Publication Date -01/06/2014 Date Updated -23/06/2014
i03894983
Torque Converter (Freewheel Stator) - Disassemble
SMCS - 3101-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 1P-0510 Driver Gp 1
C 2P-8312 Retaining Ring Pliers 1
Start By:
A. Separate the torque converter from the transmission and from output transfer gears.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
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3. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Illustration 1 g02139353
1. Use Tooling (A) and a suitable lifting device to position torque converter assembly (1) on
suitable blocking, as shown. The weight of torque converter assembly (1) is approximately
186 kg (410 lb).
Illustration 2 g02139359
2. Remove torque converter speed sensor (2), the seal, and the washer.
3. Remove gear (3) from torque converter assembly (1) .
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4. Illustration 3 g02139369
4. Remove bolts (4) and washers that hold the torque converter to the torque converter
housing.
5. Remove O-ring seal (5) .
Illustration 4 g02139386
6. Remove pump drive flange (6) .
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5. Illustration 5 g02139389
7. Remove bolt (7) and the washer that holds drive gear shaft (8) to the torque converter
housing.
8. Remove drive gear shaft (8) from pump drive gear (9) .
Illustration 6 g02139394
9. Use Tooling (A) and a suitable lifting device to remove the torque converter housing. The
weight of torque converter housing is approximately 100 kg (220 lb).
Illustration 7 g02139401
10. Remove pump drive gear (9) from the torque converter housing.
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6. Illustration 8 g02139410
11. Remove bearing (10) from pump drive gear (9). Use Tooling (B) in order to remove bearing
(10) .
Illustration 9 g02139413
Note: For disassembly of carrier shaft (14), refer to Steps 30 through 34.
12. Remove bolts (11) and washers. Use a suitable lifting device to remove impeller (12) from
rotating housing (13). The weight of impeller assembly (12) is approximately 36 kg (80 lb).
Note: If the torque converter is equipped with a freewheel stator, continue with Steps 13
through 19.
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7. Illustration 10 g02139426
13. Turn impeller (12) to opposite side.
14. Remove retaining ring (15) and spacer (16) from carrier shaft (14) .
15. Remove stator (17) .
Illustration 11 g02139419
16. Remove retaining ring (18) and washer (19) from stator (17). Repeat the procedure for
opposite side of stator (17) .
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9. 19. Use a suitable press to remove carrier shaft (14) from impeller (12) .
Illustration 15 g02140004
20. Remove drive gear (25) .
Illustration 16 g02140200
21. Remove bearing (26) from impeller (12) .
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10. Illustration 17 g02140461
22. Remove retaining ring (27) and end cover (28) from rotating housing (13) .
Illustration 18 g02140469
23. Remove O-ring seal (29) .
24. Use Tooling (C) in order to remove retaining ring (30) .
25. Remove bearing spacer (31) from rotating housing (13) .
Illustration 19 g02140484
26. Turn rotating housing (13) onto opposite side. Remove turbine (32) .
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11. Illustration 20 g02140487
27. Remove bolts (33) and washers. Separate turbine (34) from turbine hub assembly (35) .
28. If necessary, remove locating dowel (36) .
Illustration 21 g02140488
29. Remove bearing (37) and ring (38) from rotating housing (13) .
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12. Illustration 22 g02140513
30. Remove retaining ring (44) and plate (43) .
31. Use a soft faced hammer to remove shaft assembly (39) from carrier shaft (14) .
32. Remove outer bearing (42) .
33. Use a suitable press to remove inner race (41) from shaft (39) .
34. Remove ring (40) from shaft (39) .
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Apr 22 19:23:16 UTC+0800 2021
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13. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 972H WHEEL LOADER WXZ
Configuration: 972H Wheel Loader WXZ00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
966H and 972H Wheel Loaders PowerTrain
Media Number -UENR3301-01 Publication Date -01/06/2014 Date Updated -23/06/2014
i05418115
Torque Converter (Freewheel Stator) - Assemble
SMCS - 3101-016
Specifications
Illustration 1 g03355587
Typical example
Table 1
Specification for 266-9232 Torque Converter and Housing Gp and 266-9231 Torque
Converter and Housing Gp
Item Qty Part Specification Description
1 1 193-2550 Speed Sensor Gp Final installation torque to
25 ± 5 N·m (221 ± 44 lb in).
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14. 2 8 6V-4248 Bolt
Torque to
60 ± 12 N·m (44 ± 9 lb ft).
3 1 8T-0281 Bolt
Torque to
240 ± 40 N·m (177 ± 30 lb ft).
4 8 0S-1590 Bolt
Torque to
50 ± 10 N·m (37 ± 7 lb ft).
5 1 0S-1579 Bolt
Torque to
120 ± 20 N·m (89 ± 15 lb ft).
Illustration 2 g03359336
Table 2
Specification for 193-2550 Speed Sensor Gp
Item Qty Part Specification Description
1 - -
Final installation torque is
25 ± 5 N·m (221 ± 44 lb in).
- - - Output type is passive.
- - - Output frequency is 15 KHz.
Illustration 3 g03090957
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15. Table 3
Specification for 264-4297 Temperature Sensor
Item Qty Part Specification Description
1 1 -
Final installation torque is
20 ± 3 N·m (177 ± 27 lb in).
- - - Output type is Passive.
Illustration 4 g03356518
Table 4
Specification for 266-9230 Torque Converter Gp
Item Qty Part Specification Description
1 34 6V-1820 Bolt
Torque to
60 ± 7 N·m (44 ± 5 lb ft).
2 8 6V-3823 Bolt
Torque to
105 ± 15 N·m (77 ± 11 lb ft).
Assembly Procedure
Table 5
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 1P-0510 Driver Gp 1
C 2P-8312 Retaining Ring Pliers 1
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16. D 7F-6068 Sleeve 1
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in
cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint
may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn
or damaged, use new parts for replacement.
Illustration 5 g02140488
1. Install bearing (37) and ring (38) on rotating housing (13) .
Illustration 6 g02140487
1. Install locating dowel (36) in turbine hub assembly (35) .
2. Install turbine hub assembly (35) to turbine (34). Install bolts (33) and the washers. The torque
for bolts (33) is 60 ± 7 N·m (44 ± 5 lb ft).
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17. Illustration 7 g02140484
3. Turn rotating housing (13) onto opposite side. Install turbine (32) .
Illustration 8 g02140469
4. Install bearing spacer (31) .
5. Use Tooling (C) in order to install retaining ring (30) on turbine hub assembly (13). Retaining
ring (30) must be securely seated in the groove.
6. Install O-ring seal (29) .
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18. Illustration 9 g02140461
7. Install end cover (28) and retaining ring (27) in rotating housing (13) .
Illustration 10 g02140200
8. Lower the temperature of bearing (26) .
9. Install bearing (26) in impeller (12) .
Illustration 11 g02143664
10. Install drive gear (25). The torque for bolts (25A) is 105 ± 15 N·m (75 ± 11 lb ft).
Note: If the torque converter is equipped with a freewheel stator, continue with Steps 11
through 16.
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19. Illustration 12 g02143667
11. Use a suitable press to install carrier shaft (14) in impeller (12) .
12. Install spacer (24) over shaft (14) .
Illustration 13 g02139427
13. Install freewheel cam (23), freewheel springs (22), freewheel rollers (21), and bearing race (20)
in stator (17) .
Note: If necessary, raise the temperature of stator (17) to a maximum temperature of 135 °C
(275 °F). Install the cam with the IMPELLER SIDE facing downward. Continue with the
installation until freewheel cam (23) contacts the retaining ring (not shown).
Note: Install freewheel springs (22) with the maximum number of loops toward the outside
diameter of freewheel cam (23) .
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20. Illustration 14 g02139419
14. Install washer (19) and retaining ring (18) on stator (17). Repeat the procedure for the opposite
side of stator (17) .
Illustration 15 g02139426
15. Install stator (17) on impeller (12) .
16. Install spacer (16) and retaining ring (15) on carrier shaft (14) .
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21. Illustration 16 g02140513
17. Assemble carrier shaft (14), as follows.
18. Install ring (40) on shaft (39) .
19. Use a suitable press in order to install inner race (41) onto shaft (39) .
20. Install outer bearing (42) .
21. Use Tooling (B), Tooling (D), and a suitable press to install shaft assembly (39) and outer
bearing (42) into carrier shaft (14) .
22. Install plate (43) and retaining ring (44) .
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22. Illustration 17 g02139413
23. Install impeller (12) on rotating housing (13). The weight of the impeller assembly (12) is
approximately 36 kg (80 lb).
24. Install bolts (11) and washers. The torque for bolts (11) is 60 ± 7 N·m (44 ± 5 lb ft).
Illustration 18 g02139410
25. Use Tooling (B) to install bearing (10) in pump drive gear (9) .
Illustration 19 g02139394
26. Use Tooling (A) and a suitable lifting device to install the torque converter housing over the
torque converter. The weight of the torque converter housing is approximately 100 kg (220 lb).
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23. Illustration 20 g02139389
27. Install pump drive gear (9) and drive gear shaft (8) .
28. Install bolt (7) and the washer that holds drive gear shaft (8) to the torque converter housing.
The torque for bolt (7) is 240 ± 40 N·m (180 ± 30 lb ft).
Illustration 21 g02143681
29. Install pump drive flange (6) and bolts (6A). The torque for bolts (6A) is 60 ± 12 N·m (44 ± 9
lb ft).
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24. Illustration 22 g02139369
30. Install bolts (4) and the washers that hold the torque converter to the torque converter housing.
The torque for bolts (4) is 50 ± 10 N·m (37 ± 7 lb ft).
31. Install O-ring seal (5) .
Illustration 23 g02143713
32. Install gear (3). The torque for bolt (3A) is 120 ± 20 N·m (90 ± 15 lb ft).
33. Install torque converter speed sensor (2), the seal, and the washer. Adjust torque converter
speed sensor (2) in order to maintain an air gap of 0.71 ± 0.18 mm (0.028 ± 0.007 inch). The
torque for torque converter speed sensor (4) is 25 ± 5 N·m (18 ± 4 lb ft).
End By: Connect the torque converter to the transmission and to the output transfer gears.
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Apr 22 19:24:12 UTC+0800 2021
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25. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 972H WHEEL LOADER WXZ
Configuration: 972H Wheel Loader WXZ00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
966H and 972H Wheel Loaders PowerTrain
Media Number -UENR3301-01 Publication Date -01/06/2014 Date Updated -23/06/2014
i03965720
Transmission from Output Transfer Gears - Separate
SMCS - 3002-076
Separation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7573 Link Bracket 3
B 154-6181 Forcing Screw 3
Start By:
A. Separate the torque converter from the transmission.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be cleaned thoroughly. This will help to prevent dirt from entering the internal
mechanism.
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26. Illustration 1 g02161616
1. Remove bolts (1) and tube assembly (2) .
Illustration 2 g02161918
2. Disconnect harness assembly (3) .
Illustration 3 g02161923
3. Attach Tooling (A) and a suitable lifting device to transmission (4).
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27. Illustration 4 g02161929
Illustration 5 g02162314
4. Remove bolts (5) and (6) that connect transmission (4) to transfer gears (7) .
Illustration 6 g02162331
5. Use Tooling (B) in order to separate transmission (4) from output transfer gears (7) .
6. Remove transmission (4). The weight of transmission (4) is approximately 425 kg (936 lb).
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28. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 972H WHEEL LOADER WXZ
Configuration: 972H Wheel Loader WXZ00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
966H and 972H Wheel Loaders PowerTrain
Media Number -UENR3301-01 Publication Date -01/06/2014 Date Updated -23/06/2014
i06125079
Transmission Planetary - Disassemble
SMCS - 3160-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number
Part Description
Qty
A 439-3940 Link Bracket 3
B -
Steel Rods (3.175 mm (0.1250 inch) diameter and one
pointed tip)
6
C 1P-0520 Driver Gp 1
D 8B-7551 Bearing Puller 1
Start By:
A. Separate the transmission from the output transfer gears.
Note: Cleanliness is an important factor. Before the disassembly procedure, clean the exterior of
the component to prevent dirt from entering the internal mechanism.
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29. Illustration 1 g03421798
1. Remove O-ring seal (1) from the housing.
2. Remove bolt (2) and the retainer. Remove drive gear (3) from the end of the input shaft.
Illustration 2 g02146314
3. Remove plate (4) .
Illustration 3 g02146315
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30. 4. Attach Tooling (A) and a suitable lifting device to the transmission, as shown. The weight
of the transmission is approximately 425 kg (936 lb).
5. Carefully position the planetary group on the opposite end so that No. 6 clutch housing (5)
is facing upward, as shown.
Illustration 4 g03420239
Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
6. Remove retaining ring (6) from output shaft assembly (7) . Remove bolts (8) , the washers,
and No. 6 clutch housing (5) . Mark the location of the long bolts.
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31. Illustration 5 g03420296
7. Remove clutch piston (9) from No. 6 clutch housing (5) .
8. Remove seal rings (10) and (11) from clutch piston (9) .
Illustration 6 g02146333
9. Remove plate (12) and springs (13) .
Illustration 7 g02146353
10. Remove plates (12) and discs (14) . Remove dowels (15) .
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32. Illustration 8 g02146354
11. Remove ring gear (16) .
Illustration 9 g02146356
12. Remove carrier assembly (17) . Remove bolts (18) and the washers.
Illustration 10 g02146358
13. Remove metal seal ring (19) from carrier assembly (17) .
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33. Illustration 11 g03420356
14. Push spring pins (20) through carrier assembly (17) and into planetary shafts (21) . Remove
planetary shafts (21) from carrier assembly (17) .
Illustration 12 g02146362
15. Remove thrust discs (22) , planetary gears (23) , and bearings (24) from the carrier
assembly. Remove spring pins (20) from planetary shafts (21) .
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34. Illustration 13 g03420438
16. Disconnect harness assemblies (25) which are attached to transmission modulating valves
(26) . Remove transmission modulating valves (26) from the transmission housing.
Illustration 14 g02146368
17. Remove retaining ring (27) and (28) .
Illustration 15 g02146401
18. Use Tooling (A) and a suitable lifting device in order to remove housing assembly (29) .
The weight of housing assembly (29) is approximately 88 kg (195 lb).
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36. Illustration 16 g02146402
19. Remove bearing (30) from housing assembly (29) .
Illustration 17 g03685199
20. Remove retaining ring (31) and clutch housing (32) . Remove springs (33) and rods (34) .
Illustration 18 g03685201
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37. Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
21. Use steel spacers and a suitable press to lower retainer plate (35) . Remove retaining ring
(37) from sun gear (36) .
Illustration 19 g03685246
Illustration 20 g03685249
22. Separate retaining ring (37) , retainer plate (35) , and five coned disc springs (38) from sun
gear (36) . Remove seal rings (41) from clutch piston (39) . Remove seal rings (42) from
clutch housing (40) .
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38. Illustration 21 g03685253
23. Remove discs (44) and plates (43) .
Illustration 22 g03685264
24. Remove retaining ring (45) from the output shaft assembly (7) . Remove hub (46) .
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