Caterpillar Cat 980H Wheel Loader (Prefix MHG) Service Repair Manual (MHG00001 and up)

980H WHEEL LOADER

Service Repair Manual Models

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Product: WHEEL LOADER

Model: 980H WHEEL LOADER MHG

Configuration: 980H Wheel Loader MHG00001-UP (MACHINE) POWERED BY C-15 Engine

Disassembly and Assembly

980H Wheel Loader Power Train

Torque Converter (Freewheel Stator) - Disassemble

SMCS - 3101-015

Disassembly Procedure

Table 1

Required Tools

SIS

Shutdown

Number -RENR8667-08 Publication Date -01/09/2018 Date Updated -04/09/2018 i05903287

Media

Tool Part Number Part Description Qty A 138-7573 Link Bracket 3 B 8B-7548 Push-Puller 1 8B-7550 Leg 2 8H-0684 Ratchet Wrench 1 8B-7560 Step Plate 1 8H-0663 Bearing Puller Attachment 1 C 8B-7548 Push-Puller 1 8H-0684 Ratchet Wrench 1 8B-7549 Leg 2 5P-4808 Cap 2 8B-7554 Bearing Cup Puller Attachment 1 D 5F-7343 Bearing Puller Attachment 1 1P-0520 Driver Group 1 E 1P-0510 Driver Group 1 F 7

Forcing Screw

3/8 - 16 x 3 in

Start By:

A. Separate the torque converter from the transmission and from the output transfer gears. Refer to Disassembly and Assembly, "Torque Converter from Transmission, Output Transfer Gears - Separate" for the machine that is being serviced.

1. Place the torque converter housing assembly (2) on wood blocks.

Illustration 1 g00503225

2. Remove bolts (1) and the washers from torque converter housing assembly (2) .

Illustration 2 g01111329

3. Install Tooling (A) to torque converter housing assembly (2) , as shown. Attach a suitable lifting device to Tooling (A) . The weight of housing assembly (2) is approximately 120 kg (265 lb).

4. Use Tooling (F) to loosen housing assembly (2) from the torque converter.

5. Remove housing assembly (2) from the torque converter.

Illustration 3 g00871317 6. Remove O-ring seal (3) from torque converter housing assembly (2) . Illustration 4 g00871318 7. Remove bolts (4) and the washers from pump adapter (5) and torque converter housing assembly (2) .

Illustration 5 g00871264 8. Use Tooling (F) to remove pump adapter (5) from torque converter housing assembly (2) . Illustration 6 g00871319 9. Use tooling (C) to remove bearing cup (6) , O-ring seal (8) , and shims (7) from pump adapter (5) . See illustration 13 for Tooling (C) . Illustration 7 g00871326

10. Remove pump drive gear (9) from torque converter housing assembly (2) .

11. Use Tooling (B) to remove bearing cones (10) from each side to pump drive gear (9) .

9

12. Use Tooling (C) to remove bearing cup (11) from torque converter housing assembly (2) . See illustration 13 for Tooling (C) .

Illustration 8 g00871451 Illustration g00871333

Illustration 10

g01112900

13. Remove bolt (12) and the washer from torque converter housing assembly (2) .

14. Use Tooling (F) to push shaft assembly (14) out of torque converter housing assembly (2) .

15. Remove idler gear (13) from torque converter housing assembly (2) .

Illustration 11

g01112903

16. Remove O-ring seal (15) from shaft assembly (14) .

Illustration 12 g00871365

17. Remove bearing cone (16) , bearing cone spacer (17) , and bearing cone (18) from idler gear (13) .

Illustration 13 g00871366

18. Use Tooling (C) to remove bearing cup (19) from idler gear (13) .

14 g00871367

19. Remove bearing cup spacer (20) from idler gear (13) .

Illustration

Illustration 15 g00871368 20. Remove retaining ring (21) from idler gear (13) . Illustration 16 g00871369 21. Use Tooling (C) to remove bearing cups (22) from idler gear (13) .

Illustration 17 g00871370

22. Remove studs (23) from torque converter housing assembly (2) .

Illustration 18 g00871267

23. Remove retaining ring (24) and bearing carrier (25) from the carrier assembly.

Illustration 19 g01112906

24. Remove bearing carrier (25) .

25. Remove O-ring seal (26) from bearing carrier (25) .

26. Remove seal ring (27) from ring carrier (28) .

27. Use Tooling (D) and a press to remove ring carrier (28) from bearing carrier (25) .

Illustration 20 g00871269 Illustration 21 g00871273

Illustration 22

g00871274

28. Remove retaining ring (29) from bearing carrier (25) .

Illustration 23 g00871275

29. Use Tooling (D) and a press to remove inner bearing (30) from bearing carrier (25) .

Illustration 24

g01112907

30. Remove bolts (31) and the washers from drive gear (32) .

31. Remove drive gear (32) .

Illustration 25 g01112910 32. Use Tooling (E) and a press to remove the outer bearing race (32A) (not shown) from drive gear (32) . Illustration 26 g00871278 33. Remove retaining ring (33) from drive gear (32) . Illustration 27 g00871279

34. Remove bolts (34) and the washers from drive flange (35) and rotating housing (36) .

Illustration 28 g00871281 35. Use bolts (34) as forcing screws to remove drive flange (35) from rotating housing (36) . The weight of drive flange (35) is 23 kg (51 lb). Illustration 29 g00871282 36. Remove bolts (37) from drive flange (35) .

Illustration 30 g00871283

37. Remove drive flange (35) from impeller (38) .

Illustration 31

g00871284

38. Position impeller hub (39) on wood blocks.

39. Remove impeller (38) from impeller hub (39) . Illustration

32

g00870210

40. Remove thrust bearing (40) and race (40A) (not shown) from carrier assembly (41) .

41. Remove carrier assembly (41) and stator (42) as a unit from rotating housing (36) .

42. Remove snap ring (43) from stator (42) . Remove plate (44) from stator (42) .

Illustration 33 g00870211 Illustration 34 g00870212

Illustration 35

43. Remove 11 freewheel rollers (45) and 11 freewheel springs (46) from freewheel cam (47) . Remove stator (42) from carrier assembly (41) .

Illustration 36

44. Remove retaining ring (48) . Remove plate (49) .

45. Use Tooling (E) and a hydraulic press in order to remove freewheel cam (47) from stator (42) .

Note: If necessary, heat the stator to a maximum temperature of 135 °C (275 °F) for approximately 15 minutes.

Illustration 37

46. Remove thrust bearing (50) from carrier assembly (41) . Remove sleeve bearing (51) from carrier assembly (41) .

g01112913

g01112915

g01112917

Illustration 38

g01112919

47. Remove thrust bearing race (52) and the thrust bearing.

Illustration 39

g00870286

48. Remove turbine (53) and turbine hub (54) as a unit from rotating housing (36) .

Illustration 40

g01112920

49. Remove bolts (55) and the washers that hold turbine (53) to hub (54) .

Illustration 41 g00870755 50. Remove hub (54) from turbine (53) . Illustration 42 g00870288 51. Remove retaining ring (56) from turbine hub (54) .

Illustration 43 g01112924

52. Remove two races (57) and thrust bearing (58) .

Illustration 44 g00870291

53. Remove bolts (59) and the washers from cover assembly (60) .

54. Remove cover assembly (60) from rotating housing (36) .

55. Remove ring seal (61) from rotating housing (36) .

Illustration 45 g00870294

All

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Previous Screen

Product: WHEEL LOADER

Model: 980H WHEEL LOADER MHG

Configuration: 980H Wheel Loader MHG00001-UP (MACHINE) POWERED BY C-15 Engine

Disassembly and Assembly

980H Wheel Loader Power Train

Torque Converter (Freewheel Stator) - Assemble

SMCS - 3101-016

Assembly Procedure Table 1

Required Tools

Note: Cleanliness is an important factor. Before assembly, 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.

Note: Apply oil to all of the bearings before assembly.

SIS

Shutdown

Media Number -RENR8667-08 Publication Date -01/09/2018 Date Updated -04/09/2018 i05903427

Tool Part Number Part Description Qty A 138-7573 Link Bracket 3 G 8T-5096 Dial Indicator Test Group 1 5P-2390 Gauge Tool Group 1 H 1P-0520 Driver Group 1 JGuide Pin (3/8 - 16 by 8 in) 2 KGuide Pin (1/2 - 13 by 3 in) 3 L 2P-8312 Retaining Ring Pliers 1

g01112937

1. Use Tooling (H) to install sleeve bearing (62) in cover assembly (60) . Sleeve bearing (62) must be even with the outside surface of cover assembly (60) .

g03337064

2. Install ring seal (61) to rotating housing (36) .

3. Install cover assembly (60) to rotating housing (36) .

4. Install bolts (59) and the washers to cover assembly (60) . Tighten the bolts to a torque of 30 ± 5 N·m (22 ± 4 lb ft).

Illustration 1 Illustration 2

Illustration 3 g00870744 5. Install races (57) and thrust bearing (58) to cover assembly (60) . Illustration 4 g00870748 6. Install retaining ring (56) in turbine hub (54) . Illustration 5 g00870755 7. Install turbine (53) on hub (54) .

Illustration 6

g00870757

8. Install bolts (55) and the washers to turbine (53) . Tighten the bolts to a torque of 50 ± 7 N·m (37 ± 5 lb ft).

Illustration 7

g00870759

9. Install hub (54) and turbine (53) as a unit to rotating housing (36) .

Illustration 8

g00870760

10. Install thrust bearing race (52) and the bearing to the turbine hub (54) .

Illustration 9

g01112941

11. Use Tooling (H) and a hydraulic press in order to install sleeve bearing (51) to carrier assembly (41) . Install thrust bearing (50) to carrier assembly (41) .

Illustration 10

g01112915

Illustration 11

g01112913

12. Use Tooling (H) and a hydraulic press in order to install freewheel cam (47) to stator (42) .

13. Install plate (49) to stator (42) . Install retaining ring (48) to stator (42) .

Note: If necessary, heat stator (42) 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 (47) contacts the retaining ring (not shown).

14. Install stator (42) to carrier assembly (41) . Install freewheel springs (46) and freewheel rollers (45) to freewheel cam (47) . Always install new freewheel springs (46) and freewheel rollers (45) . Install freewheel springs (46) with the maximum number of loops in freewheel springs (46) to the outside of freewheel cam (47) . Use the orientation of stator (42) in Illustration 11 in reference to the following statement: Stator (42) should turn freely in the clockwise direction. Stator (42) should not turn freely in the counterclockwise direction.

Illustration 12

g00870421

15. Install plate (44) to stator (42) . Install snap ring (43) to stator (42) .

Illustration 13 g00870422 16. Install carrier assembly (41) and stator (42) as a unit to rotating housing (36) . Illustration 14 g00870762 17. Install thrust bearing (40) and race (40A) (not shown) to the carrier assembly (41) . Illustration 15 g00870994 18. Position impeller hub (39) on a wood block.

19. Install impeller (38) on impeller hub (39) . Illustration 16 g00870995 20. Install drive flange (35) on impeller (38) . Illustration 17 g00871000 21. Install bolts (37) on drive flange (35) . Tighten the bolts to a torque of 80 ± 10 N·m (60 ± 7 lb ft).

Illustration 18

g00871001

22. Install drive flange (35) on rotating housing (36) . The weight of drive flange (35) is approximately 23 kg (51 lb).

23. Install bolts (34) and the washers to drive flange (35) . Tighten the bolts to a torque of 30 ± 5 N·m (22 ± 4 lb ft).

g00871003

24. Install retaining ring (33) in the groove of drive gear (32) .

Illustration 19

Illustration 20 g00870829

25. Use the proper equipment to handle outer bearing race (32A) . Lower the temperature of outer bearing race (32A) .

26. Install outer bearing race (32A) in drive gear (32) . Make sure that outer bearing race (32A) contact retaining ring (33) .

Illustration 21 g00870763

27. Install drive gear (32) on drive flange (35) .

28. Install bolts (31) and the washers on drive gear (32) . Tighten the bolts to a torque of 50 ± 7 N·m (37 ± 5 lb ft).

Illustration 22 g00871006

29. Use the proper equipment to handle inner bearing (30) . Heat inner bearing (30) to a maximum temperature of 135 °C (275 °F). Install inner bearing (30) on bearing carrier (25) .

Illustration 23

g00871007

30. Install retaining ring (29) in the groove of bearing carrier (25) .

Illustration 24

g00871009

31. Use the proper equipment to handle ring carrier (28) . Heat ring carrier (28) to a maximum temperature of 135 °C (275 °F). Install ring carrier (28) on bearing carrier (25) .

Illustration 25

g00871012

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32. Install seal ring (27) on ring carrier (28) .

33. Install O-ring seal (26) on bearing carrier (25) .

Illustration 26

34. Install bearing carrier (25) in drive flange (35) .

Illustration 27

35. Install retaining ring (24) and bearing carrier (25) on carrier assembly (28) .

g00871014 g00871015

g00872709

36. Install studs (23) in torque converter housing assembly (2) . Tighten the studs to a torque of 100 ± 15 N·m (74 ± 11 lb ft).

g00872711

Illustration 28 Illustration 29 37. Install retaining ring (21) in the groove of idler gear (13) . Illustration 30 g00872713

38. Use the proper equipment to handle bearing cup (22) . Lower the temperature of bearing cup (22) . Install bearing cup (22) in idler gear (13) .

Illustration 31

39. Flip idler gear (13) to the opposite side. Install bearing cup spacer (20) in idler gear (13) . The notch in bearing cup spacer (20) must be aligned with retaining ring (21) .

Illustration 32

40. Use the proper equipment to handle bearing cup (19) . Lower the temperature of bearing cup (19) . Install bearing cup (19) in idler gear (13) .

g00872715 g00872716

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