Caterpillar Cat 631K WHEEL TRACTOR (Prefix WT4) Service Repair Manual Instant Download.pdf

Shutdown SIS
Previous Screen
Product: WHEEL TRACTOR
Model: 631K WHEEL TRACTOR WT4
Configuration: 631K OEM Wheel-Tractor Sctraper WT400001-UP (MACHINE) POWERED BY C18 Engine
Disassembly and Assembly
631K OEM Power Train
Media Number -M0087696-00 Publication Date -01/11/2017 Date Updated -01/11/2017
i04351575
Torque Converter - Disassemble - Scraper
SMCS - 3101-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Brackets 3
B 1P-2420 Transmission Repair Stand 1
C 1P-0520 Driver Gp 1
D 8H-0663 Bearing Puller Gp 1
E
1P-2322 Combination Puller 1
1P-0546 Puller Jaw 1
1P-0510 Driver Gp 1
F 1P-0074 Slide Hammer Puller Gp 1
Start By:
a. Separate Torque Converter, Transmission, and Transfer Gear.
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

Illustration 1 g02477139
1. Attach Tooling (A) and a suitable lifting device to housing assembly (2) . Reposition
housing assembly (2) onto Tooling (B). The weight of housing assembly (2) is
approximately 73 kg (160 lb).
2. Remove bolts (1) and lift housing assembly (2) from torque converter assembly (3).
3. Reposition torque converter assembly (3) on Tooling (B) as shown. The weight of torque
converter assembly (3) is approximately 34 kg (76 lb).
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4. Remove bolts (4).
5. Attach Tooling (A) and a suitable lifting device to cover assembly (5). Remove cover
assembly (5) from torque converter assembly (3).
6. Remove clutch piston (6).
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7. Remove friction disk (7). Remove bolts (10) and shaft retainer (8). Remove hub (9) and seal
rings.
8. Remove bolts (12). Remove bearing retainer (11). Remove retaining ring (13). Remove
upper bearing race (16). Remove retaining ring (14). Remove bearing (15).
9. Reposition torque converter assembly (3) on Tooling (B) as shown. The weight of torque
converter assembly (3) is approximately 34 kg (76 lb).
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10. Remove bolts (17).
11. Attach Tooling (A) to impeller wheel assembly (18). Remove impeller wheel assembly (18).
The weight of impeller wheel assembly (18) is approximately 34 kg (76 lb).
12. Remove retaining ring (19) from bearing (20).
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13. Use Tooling (E) to separate shaft assembly (21) from bearing assembly (20) and carrier
assembly (22).
14. Remove bolts (23). Use Tooling (F) to remove stator assembly (24) from carrier assembly
(22) and impeller wheel assembly (18).
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15. Remove bolts (25). Use Tooling (C) to remove carrier assembly (22) from impeller wheel
assembly (18).
16. Using Tooling (C) and a suitable press to remove bearing (26) and gear (27) from carrier
assembly (22).
17. Remove seal ring (28).
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18. Remove seal rings (29). Remove retaining ring (30) from shaft assembly (21).
19. Install Tooling (D).
Note: Tooling (D) must be seated on the shoulder of turbine (31) in order to support turbine
and prevent damage. Tooling (D) must not contact the splines on shaft (21).
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20. Use a suitable press to remove shaft assembly (21) from turbine (31). Remove bearing race
(32) and the spacer from turbine (31).
21. Position housing assembly (2) as shown.
22. Remove bolts (33) and gear (34).
23. Remove retaining rings (35) from gear (34).
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24. Use a suitable press and Tooling (C) in order to remove bearing (36) and shaft from gear
(34).
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Jun 19 10:58:57 UTC+0800 2021
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Shutdown SIS
Previous Screen
i04578058
Torque Converter - Assemble - Scraper
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
A 138-7575 Link Brackets 3
B 1P-2420 Transmission Repair Stand 1
C 1P-0520 Driver Gp 1
G -
Threaded Rod
3/8-16 by 4.00
1
H - Locktite 242 1
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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1. Use a suitable press and Tooling (C) to install bearing (36) and shaft into gear (34).
2. Install retaining ring (35) on each side of gear (34) .
3. Position housing assembly (2) as shown.
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4. Install gear (34). Install bolts (33) .
5. Lower the temperature of shaft assembly (21). Install retaining ring (30). Install shaft
assembly (21) in the turbine (31) until ring (30) rests on the turbine (31). Install seal rings
(29) .
6. Install the spacer. Raise the temperature of bearing race (32). Install bearing race (32) on
shaft assembly (21) .
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7. Install seal ring (28) .
8. Install gear (27) to carrier assembly (22) .
9. Raise the temperature of bearing (26). Install bearing (26) on carrier assembly (22) .
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10. Position lower part of carrier assembly (22) under impeller wheel assembly (18) .
11. Install Tooling (G) to align carrier assembly (22) with impeller wheel assembly (18) .
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12. Install bolts (25). Tighten bolts (25) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
13. Position stator assembly (24) on carrier assembly (22). Apply Tooling (H) to bolts (23).
Install bolts (23). Tighten bolts (23) to a torque of 40 ± 5 N·m (30 ± 4 lb ft).
14. Install carrier assembly (22) and impeller wheel assembly (18) on turbine (31) and shaft
assembly (21) .
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Note: Install bearing (20) with Radius Side (X) facing down, toward carrier assembly (22).
15. Raise the temperature of bearing (20). Install bearing. Install retaining ring (19) .
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16. Attach Tooling (A) and a suitable lifting device to impeller wheel assembly (18). The
weight of impeller wheel assembly (18) is approximately 34 kg (76 lb). Install impeller
wheel assembly (18) into torque converter assembly (3) .
18. Reposition torque converter assembly (3) on Tooling (B). The weight of torque converter
assembly (3) is approximately 64 kg (142 lb).
19. Lower the temperature of bearing (15) and install bearing. Install retaining ring (14). Install
upper bearing race (16) and retaining ring (13) .
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20. Install bearing retainer (11). Install bolts (12). Tighten bolts (12) to a torque of 50 ± 7 N·m
(37 ± 5 ft).
21. Install hub (9). Install shaft retainer (8) and the seal rings. Install bolts (10). Tighten bolts
(10) to a torque of 50 ± 7 N·m (37 ± 5 lb ft). Install friction disk (7) .
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22. Install clutch piston (6) .
Note: When lowering cover assembly (5) down over clutch piston (6), align pins in cover
assembly (5) into notch on clutch piston (6).
23. Attach Tooling (A) and a suitable lifting device to cover assembly (5). Install cover
assembly (5) into torque converter assembly (3) .
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25. Attach Tooling (A) and a suitable lifting device to housing assembly (2). The weight of
housing assembly (2) is approximately 119 kg (263 lb). Lower housing assembly (2) onto
torque converter assembly (3). Install bolts (1) .
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End By: Connect the torque converter, transmission, and transfer gear.
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Jun 19 11:00:00 UTC+0800 2021
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Shutdown SIS
Previous Screen
i06636123
Torque Converter - Assemble
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
A 2P-8312 Retaining Ring Pliers 1
B 1P-0510 Driver Group 1
1. Use Tooling (B) and a suitable hydraulic press to install sleeve bearing (33) into flange (32).
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2. Position flange (32) and install bolts (31) onto housing (9). Tighten bolts (31) to a torque of
120 ± 15 N·m (89 ± 11 lb ft).
3. Install thrust bearing (29) and thrust race (30) into housing (9).
4. Install turbine (23) and clamp ring (28) onto hub (3).
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5. Install bolts (27) into turbine (23). Tighten bolts (27) to a torque of 50 ± 7 N·m
(37 ± 5 lb ft). Install thrust race (26) onto hub (3).
6. Install thrust race (25) and thrust bearing (24) onto hub (3).
7. Install turbine (23) and hub (3) as a unit into housing (9).
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8. Use Tooling (B) and a suitable press to install sleeve bearing (22) into carrier assembly (12).
Install thrust bearing (21) onto carrier assembly (12).
9. Install side plate (20) to stator (13). Use Tooling (A) to install retaining ring (19) to stator
(13).
10. Use Tooling (B) and a suitable hydraulic press to install freewheel cam (18) into stator (13).
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11. Install stator (13) to carrier assembly (12). Install freewheel springs (16) and freewheel
rollers (17) to freewheel cam (18). Always install new freewheel springs (16) and freewheel
rollers (17). Install freewheel springs (16) with the maximum number of loops in freewheel
springs (16) to the outside of freewheel cam (18). Stator (13) should turn freely in the
clockwise direction. Stator (13) should not turn freely in the counterclockwise direction.
12. Install thrust race (15) to stator (13). Use Tooling (A) to install retaining ring (14) onto
stator (13).
13. Install carrier assembly (12) and stator (13) as a unit into housing (9).
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14. Install thrust bearing (11) and seal ring (12A) onto carrier assembly (12).
15. Install impeller hub (8) to impeller (5). Install thrust race (10) onto impeller (5).
16. Install clamp plate (7) and bolts (6) onto impeller hub (8). Tighten bolts (6) to a torque of
50 ± 7 N·m (37 ± 5 lb ft).
17. Install bolts (4) into impeller (5). Tighten bolts (4) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
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