Torque Converter (Lockup) - Disassemble - Type 2
`
988G Wheel Loader Power Train
[RENR3096]
988G Wheel Loader Power Train
Output Transfer Gears - Assemble
988G Wheel Loader Power Train
Torque Converter (Lockup) - Assemble - Type 2
POWER TRAIN
TORQUE CONVERTER GP
988G Wheel Loader Power Train
Torque Converter - Remove
988G Wheel Loader Power Train
Torque Converter - Disassemble
988G Wheel Loader Power Train
Torque Converter - Assemble
988G Wheel Loader Power Train
Torque Converter - Install
988G Wheel Loader Power Train
Torque Converter (Lockup) - Disassemble
988G Wheel Loader Power Train
Torque Converter (Lockup) - Assemble
988H and 988K Wheel Loaders Power Train
Torque Converter - Assemble
1.1. Disassembly Procedure
Show/hide table
Required Tools | |||
---|---|---|---|
Tool | Part Number | Part Description | Qty |
A | 138-7573 | Link Bracket | 1 |
138-7575 | Link Bracket | 2 | |
B | 5F-7366 | Screw | 1 |
3H-0465 | Plate | 2 | |
1P-5546 | Crossblock | 1 | |
5H-7369 | Puller Leg | 2 | |
6B-6682 | 3/4" - 16 NF Nut | 2 | |
1P-0520 | Driver Gp | 1 | |
4C-5653 | Threaded Adapter | 2 | |
C | 188-1456 | Metric Eyebolt | 1 |
D | 138-7575 | Link Bracket | 2 |
E | 138-7575 | Link Bracket | 3 |
F | 5F-7366 | Screw | 1 |
3H-0465 | Plate | 2 | |
1P-5546 | Crossblock | 1 | |
5H-7369 | Puller Leg | 2 | |
8B-7551 | Bearing Puller | 1 | |
6B-6682 | 3/4" - 16 NF Nut | 2 | |
1P-0520 | Driver Gp | 1 | |
G | 5F-7366 | Screw | 1 |
3H-0465 | Plate | 2 | |
1P-5546 | Crossblock | 1 | |
8B-7549 | Puller Leg | 2 | |
5F-7343 | Bearing Puller | 1 | |
6B-6682 | 3/4" - 16 NF Nut | 2 | |
1P-0520 | Driver Gp | 1 | |
5F-7342 | Adapter | 2 | |
H | 1P-0520 | Driver Gp | 1 |
J | 138-7574 | Link Bracket | 2 |
Start By:
- Remove the torque converter. Refer to Disassembly and Assembly, "Torque Converter - Remove" for the machine that is being serviced.
- Remove the transmission oil pump. Refer to Disassembly and Assembly, "Transmission Oil Pump - Remove" for the machine that is being serviced.
- Remove the torque converter outlet relief valve. Refer to Disassembly and Assembly, "Relief Valve (Torque Converter Outlet) - Remove" for the machine that is being serviced.
- Remove the modulating valve for the torque converter impeller clutch. Refer to Disassembly and Assembly, "Modulating Valve (Torque Converter Impeller Clutch) - Remove" for the machine that is being serviced.
- Remove the modulating valve for the torque converter lockup clutch. Refer to Disassembly and Assembly, "Modulating Valve (Torque Converter Lockup Clutch) - Remove" for the machine that is being serviced.
- Place the torque converter assembly on cribbing. The weight of the torque converter assembly is
545 kg (1200 lb) .Show/hide tableIllustration 2 g00660841 - Remove speed sensor (1).
Show/hide table
Illustration 3 g00665406 - Remove bolt (2) and retainer (3).
Show/hide table
Illustration 4 g00665411 - Remove O-ring seal (4) and yoke (5).
Show/hide table
Illustration 5 g00665412 - Remove eleven bolts (6) and the washers.
Show/hide table
Illustration 6 g00665414 - Install Tooling (A) to housing assembly.
- Attach a suitable lifting device and lifting chains to Tooling (A).
- Use M12 x 1.75 forcing screws in order to separate housing assembly from the torque converter.
- Use the suitable lifting device in order to remove housing assembly. The weight of the housing assembly is
285 kg (630 lb) .Show/hide tableIllustration 7 g00660846 - Remove eight bolts (7) and retainer (8).
Show/hide table
Illustration 8 g00660847 - Remove seal (9) from retainer (8).
Show/hide table
Illustration 9 g00660849 - Remove gasket (10).
- Remove O-ring seal (11) and (12).
Show/hide table
Illustration 10 g00673879 Show/hide tableIllustration 11 g00673880 - Position torque converter assembly onto the side, as shown.
- Remove six bolts (13) and cover (14).
Show/hide table
Illustration 12 g00673881 - Remove two bolts (15), retainer (16), and washer (17).
Show/hide table
Illustration 13 g00673882 - Use Tooling (B) in order to push the shaft out of the bearing.
Show/hide table
Illustration 14 g00673883 - Position torque converter assembly upright, as shown.
- Install Tooling (C) to shaft assembly (18).
- Attach a suitable lifting device and a sling to Tooling (C).
- Use the suitable lifting device in order to remove shaft assembly (18). The weight of shaft assembly (18) is
17 kg (38 lb) .Show/hide tableIllustration 15 g00673886 - Use a suitable press in order to remove bearing (19) and seal carrier (20) from inner shaft (18).
Show/hide table
Illustration 16 g01061064 Show/hide tableIllustration 17 g01061071 - Remove 36 bolts (21), and washers (22). Do not remove two bolts (25) at this time.
Show/hide table
Illustration 18 g00673887 - Install Tooling (D).
- Attach a suitable lifting device and lifting slings to Tooling (D).
- Use the suitable lifting device in order to remove carrier assembly (23). The weight of carrier assembly (23) is
132 kg (290 lb) .Show/hide tableIllustration 19 g00673888 - Place carrier assembly (23), as shown.
- Remove stator (24).
Show/hide table
Illustration 20 g01060995 Show/hide tableIllustration 21 g01061000 - Remove retaining ring (29) and plate (28) from stator (24). Remove ring (26) (not shown), and plate (27) (not shown) from the other side of stator (24).
- Use a suitable press in order to remove adapter (30) from stator (24).
Show/hide table
Illustration 22 g00674499 - Remove spacer (33).
Show/hide table
Illustration 23 g00674501 - Remove bearing (34).
- Remove the plate and the ring below bearing (34).
Show/hide table
Illustration 24 g00674503 - Remove retaining ring (35).
Show/hide table
Illustration 25 g00674504 - Use two persons in order to remove impeller (36). The weight of impeller (36) is
29 kg (65 lb) .Show/hide tableIllustration 26 g00674505 - Remove race (37) from impeller (36).
Show/hide table
Illustration 27 g00674506 - Remove twelve bolts (38) and the washers.
- Remove impeller (36) from adapter assembly (39).
Show/hide table
Illustration 28 g03389759 - Remove plate (40a), bearing (40b), plate (40c), and ring (40d).
Show/hide table
Illustration 29 g01061078 - Remove two bolts (25) and plate (41).
Note: Bolts (25) are on the underside of plate (41).
Show/hide tableIllustration 30 g00674510 - Remove two friction discs (42) and one wear plate.
Show/hide table
Illustration 31 g00674512 - Remove piston (43).
Show/hide table
Illustration 32 g00674516 - Remove seal (44) from piston (43).
Show/hide table
Illustration 33 g00674514 - Install Tooling (E) to housing assembly (45).
- Attach a suitable lifting device and slings to housing assembly (45).
- Use the suitable lifting device in order to remove housing assembly (45). The weight of housing assembly (45) is
45 kg (100 lb) .Show/hide tableIllustration 34 g00674519 - Remove twelve bolts (46) and gear (47) from housing assembly (45).
Show/hide table
Illustration 35 g00674520 - Remove race (48) from gear (47).
Show/hide table
Illustration 36 g00674521 - Remove eight bolts (49) and sleeve (50).
Show/hide table
Illustration 37 g00674522 - Remove seal (51) from sleeve (50).
Show/hide table
Illustration 38 g00674523 - Remove seal (52).
- Remove two seals (53).
- Remove retaining ring (54).
Show/hide table
Illustration 39 g00674524 - Use a hammer and a punch in order to remove pin (55).
Show/hide table
Illustration 40 g00674721 - Use Tooling (F) in order to remove ring carrier (56).
Show/hide table
Illustration 41 g00674722 - Use Tooling (G) in order to remove bearing (57).
Show/hide table
Illustration 42 g00674723 - Remove bearing (58).
- Remove the plate and the ring below bearing (58).
Show/hide table
Illustration 43 g00674725 - Use appropriate equipment to turn the housing onto the opposite side.
- Remove O-ring seal (59) and two plugs (60).
Show/hide table
Illustration 44 g00674726 - Use suitable cribbing in order to support the turbine and hub assembly. Place the cribbing inside the housing assembly.
- Use Tooling (H) in order to remove the hub from bearing (61).
Show/hide table
Illustration 45 g00674727 - Remove bearing (61).
Show/hide table
Illustration 46 g00674744 Show/hide tableIllustration 47 g00674747 - Remove 24 bolts (62) and hub (63) from turbine (64).
- Remove clutch adapter (65).
Show/hide table
Illustration 48 g01924533 - Remove plate (66) and bearing (67).
- Remove the plate and the ring below bearing (67).
Show/hide table
Illustration 49 g01924775 - Remove retaining ring (68) and plate (69).
Show/hide table
Illustration 50 g01924777 Show/hide tableIllustration 51 g01924895 - Remove two wear plates (70) and two friction discs (71).
Show/hide table
Illustration 52 g01924913 - Remove piston (72).
Note: It may be necessary to use shop air under pressure of
621 kPa (90 psi) to remove piston (72).Show/hide tableIllustration 53 g01925054 - Remove seal (73) from piston (72).
Note: The following steps are used for the removal and disassembly of the pump drives.
Show/hide tableIllustration 54 g01925096 - Remove seven bolts (74).
Show/hide table
Illustration 55 g01925106 - Install two forcing screws and Tooling (J).
- Attach a suitable lifting device and lifting slings to Tooling (J).
- Use the suitable lifting device in order to remove adapter (75). The weight of adapter (75) is
30 kg (65 lb) .Note: If necessary, use forcing screws to separate adapter (75) from the housing.
Show/hide tableIllustration 56 g01925114 - Remove two O-ring seals (76) from adapter (75).
Show/hide table
Illustration 57 g01925125 - Remove race (77) and seal (78) from adapter (75).
Show/hide table
Illustration 58 g01925633 - Remove gear assembly (79).
Show/hide table
Illustration 59 g01925655 - Use Tooling (F) in order to remove bearing (80) from gear assembly (79).
Show/hide table
Illustration 60 g01925696 - Remove retaining ring (81) and adapter (82) from gear assembly (79).
Show/hide table
Illustration 61 g01925716 - Remove retaining ring (83) from adapter (82). Remove plate (84).
Show/hide table
Illustration 62 g01925721 - Use Tooling (F) in order to remove bearing (85) from gear assembly (79).
Show/hide table
Illustration 63 g01925744 - Remove shim pack (86) and race (87).
Show/hide table
Illustration 64 g01925815 - Remove three bolts (88) and cover (89).
Show/hide table
Illustration 65 g01926035 - Remove O-ring seal (90) from cover (89).
Show/hide table
Illustration 66 g01926053 - Remove bolt (91) and the washer.
- Remove idler gear shaft (92).
Show/hide table
Illustration 67 g03410576 If equipped with this style lube adapter. Show/hide tableIllustration 68 g03410578 If equipped with this style lube adapter. - Remove lube adapter (91a), (92b).
Show/hide table
Illustration 69 g01926061 - Remove idler gear assembly (93).
Show/hide table
Illustration 70 g01926133 - Remove two bearings (94) and ring (95) from idler gear assembly (93).
Show/hide table
Illustration 71 g01926157 - Remove four bolts (96) and block (97).
Show/hide table
Illustration 72 g01926163 - Remove five O-rings (98) and three plugs (99).
- Repeat steps 72 through 92 in order to remove the remaining pump adapter.
Show/hide table
![]() | |
Illustration 1 | g00673844 |
Information System:
613G Wheel Tractor-Scraper
Declaration of Conformity
657G Wheel Tractor-Scraper
Declaration of Conformity
637G Wheel Tractor-Scraper
Declaration of Conformity
631G Wheel Tractor-Scraper
Declaration of Conformity
627G Wheel Tractor-Scraper
Declaration of Conformity
623G Wheel Tractor-Scraper
Declaration of Conformity
621G Wheel Tractor-Scraper
Declaration of Conformity
2009/06/29
Fuel Injection Pump Latch Valve for 3054C Engines {1251}
2009/05/25
Correction to the Disassembly and Assembly , "Tailgate - Install" {7250, 7271}
2009/05/25
Correction to the Disassembly and Assembly , "Tailgate - Remove" {7250, 7271}
3516B Engine for 994F and 994H Wheel Loaders
Power Is Intermittently Low or Power Cutout Is Intermittent
AccuGrade</SUP> GPS / Single UTS / Site and Laser Reference v11 for Excavators
Excavator Arm Sensors - Calibrate - PSC System
2009/06/22
Improvements Have Been Made to the Lift Cylinder {5102}
D6T Track-Type Tractor Systems
Hydraulic Tank and Filter
988G Wheel Loader Electrohydraulic System
MID 082 - CID 1964 - FMI 08
973D Track-Type Loader Machine Systems
Fuel Tank
3500B Engines for Caterpillar Built Power Modules
Fuel Injector Mechanism
D6T Track-Type Tractor Hydraulic System
Piston Pump (Implement)
C9.3 Engines for Caterpillar Built Machines
Fuel Manifold (Rail) - Remove and Install
C9.3 Engines for Caterpillar Built Machines
Relief Valve (Fuel) - Remove and Install
D6T Track-Type Tractor Hydraulic System
Piston Pump (Steering)
988G Wheel Loader Power Train
Torque Converter (Lockup) - Assemble - Type 2
D7E Track-Type Tractor
Lifting and Tying Down the Machine
973D Track-Type Loader Hydraulic System
General Information