Caterpillar Cat 637G Wheel Scraper (Prefix DEX) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
637G Wheel Tractor

Shutdown SIS
Previous Screen
Product: WHEEL SCRAPER
Model: 637G WHEEL SCRAPER DEX
Configuration: 637G Wheel Scraper DEX00001-UP (MACHINE) POWERED BY C9 Engine
Disassembly and Assembly
637G Wheel Tractor-Scraper
Wheel Scraper Power Train
Media Number -RENR8606-00 Publication Date -01/04/2006 Date Updated -21/04/2006
i02322407
Torque Converter - Assemble
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 3
B 1P-1861 Retaining Ring Pliers 1
C 1P-0520 Driver Gp 1
D 2P-8312
Retaining Ring Pliers
(External)
1
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

Illustration 1 g01160861
1. Lower the temperature of shaft (22). Use Tooling (D) to install ring (38). Install shaft (22) in
the turbine until ring (38) rests on the turbine. Install rings (37).
2. Install the spacer. Raise the temperature of bearing race (40). Install bearing race (40) to
turbine (39) and shaft (22).
3. Install seal ring (36).
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4. Install gear (33) to carrier assembly (28).
5. Raise the temperature of bearing (35). Install bearing (35) on carrier assembly (28).
6. Lower the temperature of carrier (34). Install carrier (34) into impeller (30).
Note: Make sure that the bolt holes are aligned.
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7. Position gear (33). Install bolts (32). Tighten bolts (32) to a torque of 50 ± 7 N·m
(37 ± 5 lb ft).
8. Position stator assembly (31) on impeller (30) and on carrier assembly (28). Install bolts
(29). Tighten bolts (29) to a torque of 40 ± 5 N·m (30 ± 4 lb ft).
9. Install carrier assembly (28) on impeller (39).
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10. Raise the temperature of the bearing. Install the bearing on shaft (22).
11. Lower the temperature of the bearing. Install the bearing. Install retaining ring (27).
12. Use Tooling (A) and a suitable lifting device to install impeller assembly (25) to housing
(26). The weight of impeller assembly (25) is approximately 41 kg (90 lb).
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13. Position the torque converter, as shown. Install bolts (24). Tighten bolts (24) to a torque of
30 ± 5 N·m (22 ± 4 lb ft).
14. Use Tooling (D) to install retaining ring (23). Position retainer (21). Install bolts (20).
Tighten bolts (20) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
15. Install gear (19) on shaft (22).
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16. Install ring seals (18). Install retainer (17) on shaft (22).
17. Install disc assembly (16).
18. Install seals (15). Install piston (14) into housing assembly (13).
19. Install housing assembly (13).
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20. Install bolts (12). Tighten bolts (12) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
21. Use a suitable press and Tooling (C) to install the bearing to gear (8).
22. Install shaft (11).
23. Use Tooling (B) to install retaining ring (10) on each side of gear (8).
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24. Position housing assembly (7), as shown.
25. Position gear (8). Install bolts (9).
26. Attach Tooling (A) and a suitable lifting device to housing assembly (7). The weight of
housing assembly (7) is approximately 73 kg (160 lb).
27. Install housing assembly (7) onto the torque converter.
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28. Install race (6). Install bolts (5).
29. Install carrier (3).
30. Install seal ring (4) to carrier (3) on each side of retarder rotor (2).
31. Install retarder rotor (2). Install retaining ring (1).
End By:
a. Connect the torque converter to the transmission. Refer to Disassembly and Assembly,
"Torque Converter, Transmission and Transfer Gear - Connect".
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Aug 23 00:42:12 UTC+0800 2021
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Shutdown SIS
Previous Screen
i02331325
Transfer Gears - Disassemble
SMCS - 3159-015
Disassembly Procedure
Table 1
Required Tools
A 1P-0520 Driver Gp 1
B
1P-0820 Hydraulic Puller 1
3H-0465 Push-Puller Plate 4
8B-7549 Puller Leg 2
8B-7551 Bearing Puller Gp 1
C 138-7573 Link Bracket 2
D
5F-7343
Bearing Puller Gp
(Twenty Ton Capacity)
1
1P-0520 Driver Gp 1
E
8B-7551 Bearing Puller Gp 1
1P-0520 Driver Gp 1
Start By:
A. Remove the transmission. Refer to Disassembly and Assembly, "Torque Converter,
Transmission, and Transfer Gear - Separate".
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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.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
1. Remove cover (1) .
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2. Remove bolt (5). Remove retainer (6). Remove the O-ring seal. Remove yoke (4) .
3. Remove bolts (2). Remove cage assembly (3) .
4. Remove seal (7) from cage assembly (3) .
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5. Position cage assembly (3). Remove bolts (8). Remove plate (9). Remove O-ring seal (10) .
6. Use Tooling (A) and a suitable press in order to remove bearings (11) from cage assembly
(3) .
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Note: If the shaft is not supported, the shaft will fall when bolt (13) is removed.
7. Position transfer case (12). Support shaft (14). Remove bolt (13). Remove the retainer.
Remove shaft (14) .
8. Remove gear (15) from transfer case (12) .
9. Use Tooling (B) in order to remove bearing (16) from shaft (14) .
10. Remove bolts (17) .
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11. Attach Tooling (C) and a suitable lifting device to cage (18). Remove cage (18) and the
pinion as a unit. The weight of cage (18) and the pinion is approximately 34 kg (76 lb).
12. Remove bolts (19). Remove plate (20). Remove bearing cone (21) .
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13. Use Tooling (D) and a suitable press in order to remove cage (18) from pinion (22) .
14. If necessary, use Tooling (E) in order to remove bearing cone (23) from pinion (22). If
necessary, use Tooling (E) in order to remove bearing cone (24) from pinion (22) .
15. Remove retaining ring (25) in order to remove bearing cup (26) from cage (18) .
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16. Use Tooling (A) and a suitable press in order to remove the bearing cup from cage (18) .
17. Remove plug (27). Remove the dowel that holds the race in position.
18. Remove bearing race (28). Remove bearing race (29) .
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Shutdown SIS
Previous Screen
i06887518
Transfer Gears - Assemble
SMCS - 3159-016
Assembly Procedure
Table 1
Required Tools
C 439-3938 Link Bracket 2
F 8T-5096 Dial Indicator Gp 1
G 6V-2012 Depth Micrometer 1
K 525-7951 Plate 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.
Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the
components, if necessary.
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1. Lower the temperature of bearing race (28). Lower the temperature of bearing race (29).
Install the bearing races into case assembly. Align the hole in bearing race (29) to the case
assembly.
2. Install the dowel. Install plug (27).
3. Raise the temperature of cage (18). Lower the temperature of bearing cup (26). Install
bearing cup (26).
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4. Install retaining ring (25) into cage (18).
5. Raise the temperature of bearing (24). Install bearing (24). Raise the temperature of bearing
cone (23). Install bearing cone (23). Install the bearing spacer.
6. Install cage (18). Raise the temperature of bearing cone (21). Install bearing cone (21).
Install plate (20). Install bolts (19).
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7. Place gear (22) onto Tooling (K).
8. Use Tooling (G) to measure Dimension (Y). Add or remove the shims until Dimension (Y)
is achieved. Dimension (Y) is 135.35 ± 0.08 mm (5.329 ± 0.003 inch).
a. Install bearing (24)(not shown).
9. Install the thickness of shims calculated in step 8 onto the case assembly.
10. Attach Tooling (C) and a suitable lifting device. Position cage (18) and the pinion as a unit.
The weight of cage (18) and the pinion is 34 kg (75 lb).
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11. Install bolts (17).
12. Raise the temperature of bearing (16). Install bearing (16) on shaft (14).
13. Position gear (15) in transfer case (12). Install shaft (14). Support shaft (14). Install the
retainer and install bolt (13). For the correct torque, refer to Specifications, "Transfer Gears
(Transmission)" for the Power Train.
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14. Install bearings (11) to cage assembly (3). Install the bearing cup.
15. Position cage assembly (3). Install O-ring seal (10). Position plate (9). Install bolts (8).
16. Install seal (7) to cage assembly (3).
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17. Install cage assembly (3). If necessary, install shims to set the backlash. For the correct
adjustment procedure, refer to Specifications, "Transfer Gears (Transmission)" for the
power train. Install bolts (2).
18. Install Tooling (F) to check the backlash. For the correct backlash setting, refer to
Specifications, "Transfer Gears (Transmission)" for the power train.
Note: When you adjust the backlash, change the shim thickness by the same amount in both
shim packs so that the top surfaces of gear (15) and pinion (22) remain equal.
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Caterpillar Cat 637G Wheel Scraper (Prefix DEX) Service Repair Manual Instant Download.pdf

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Caterpillar Cat 637G Wheel Scraper (Prefix DEX) Service Repair Manual Instant Download.pdf