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

Service Repair Manual
Models
637G Wheel Tractor

Shutdown SIS
Previous Screen
Product: WHEEL SCRAPER
Model: 637G WHEEL SCRAPER CEM
Configuration: 637G Wheel Scraper Coal Bowl CEM00001-UP (MACHINE) POWERED BY C-9 Engine
Disassembly and Assembly
637G Wheel Tractor-Scraper Wheel Tractor Power Train
Media Number -RENR5733-00 Publication Date -01/09/2004 Date Updated -30/09/2004
i02156910
Torque Converter - Assemble
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7574 Link Bracket 3
B 1P-1861 Retaining Ring Pliers 1
C 1P-0510 Driver Gp 1
D 7X-0290 Bolt 2
NOTICE
Keep all parts clean from contaminants.
Contamination of the hydraulic system with foreign material will
reduce the service life of the hydraulic system components.
To prevent contaminants from entering the hydraulic system, always
plug or cap the lines, fittings, or hoses as they are disconnected. Cover
any disassembled components and clean them properly before
assembly.
Clean the hydraulic system properly after any major component
exchange or especially after a component failure, to remove any
contamination.
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

Illustration 1 g01094391
1. Lower the temperature of bearing (50). Install bearing (49) into housing (21) .
2. Install the seals onto piston (49) and housing (21). Use Tooling (D) in order to install piston
(49) into housing (21) .
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3. Position housing (21), as shown. Install inner bearing race (48) .
4. Install disc assembly (47) .
5. Install plate (46). Install ring (45) .
6. Install rings (43) onto shaft (44) .
7. Lower the temperature of bearing (42). Install bearing (42) onto shaft (44) .
8. Install carrier (41). Install gear assembly (40) .
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9. Install impeller (39). Install carrier (38) .
10. Install race (37). Install bearing (36) .
11. Position stator (33), as shown. Install race (35). Install ring (34) .
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12. Install stator (33). Install ring (32) .
13. Install turbine (31). Install race (30). Install ring (29). Install bearing (28) .
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14. Position hub (24), as shown. Install retainer (27) .
15. Install carrier (26). Install ring (25) .
16. Install hub (24). Install the shaft. Raise the temperature of bearing race (23). Install bearing
race (23) on the shaft.
17. Install bolts (22). Tighten bolts (22) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
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18. Install Tooling (A). Position the torque converter, as shown. Install bolts (20). Tighten bolts
(20) to a torque of 50 ± 7 N·m (37 ± 5 lb ft). Install bolts (19). Tighten bolts (19) to a torque
of 50 ± 7 N·m (37 ± 5 lb ft).
19. Install torque converter assembly (18) into housing (21). The weight of torque converter
assembly (18) is approximately 82 kg (180 lb).
20. Install outer bearing race (17) .
21. Position retainer (16). Install bolts (15). Tighten bolts (15) to a torque of 50 ± 7 N·m (37 ± 5
lb ft).
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22. Position torque converter (14), as shown. Position flywheel pilot (13). Install bolts (12).
Tighten bolts (12) to a torque of 50 ± 7 N·m (37 ± 5 lb ft).
23. Use Tooling (C) and a suitable press to install the bearing into gear (8) .
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24. Install shaft (11) .
25. Use Tooling (B) in order to install retaining ring (10) to each side of gear (8) .
26. Position housing assembly (7), as shown.
27. Install bolts (9). Position gear (8) .
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28. Attach Tooling (A) and a suitable lifting device onto housing assembly (7) .
29. Position housing assembly (7). The weight of housing assembly (7) is approximately 118 kg
(260 lb).
30. Install retainer (6). Install bolts (5) .
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31. Install carrier (3) .
32. Install ring (4) to carrier (3) on each side of retarder (2) .
33. Install retarder (2). Install retaining ring (1) .
End By: Connect the torque converter to the transmission. Refer to Disassembly and Assembly,
"Torque Converter - Connect".
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Jul 19 00:34:13 UTC+0800 2021
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Shutdown SIS
Previous Screen
i02156912
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 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 from
Transmission - Separate".
NOTICE
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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) .
2. Remove bolt (5). Remove retainer (6). Remove the O-ring seal. Remove yoke (4) .
3. Remove bolts (2). Remove cage assembly (3) .
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4. Remove seal (7) from cage assembly (3) .
5. Position cage assembly (3), as shown. Remove bolts (8). Remove plate (9). Remove O-ring
seal (10) .
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6. Use Tooling (A) and a suitable press in order to remove bearing (11) from cage assembly
(3) .
Note: If shaft (14) is not supported, the shaft will fall when bolt (13) is removed.
7. Position transfer case (12), as shown. 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) .
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10. Remove bolts (17) .
11. Attach Tooling (C) and a suitable lifting device onto cage (18). Remove cage (18) and the
pinion as a unit. The unit weighs approximately 34 kg (76 lb).
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12. Remove bolts (19). Remove plate (20). Remove bearing (21) .
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) .
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15. Remove retaining ring (25) in order to remove bearing race (26) from cage (18) .
16. Use Tooling (A) and a suitable press in order to remove the bearing race from cage (18) .
17. Remove plug (27). Remove the dowel that holds the race in position.
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18. Remove bearing race (28). Remove bearing race (29) .
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Shutdown SIS
Previous Screen
i05263976
Transfer Gears - Assemble
SMCS - 3159-016
Assembly Procedure
Table 1
Required Tools
C 138-7573 Link Bracket 2
F 6V-2012 Depth Micrometer 1
G 8T-5096 Dial Indicator Gp 1
NOTICE
Keep all parts clean from contaminants.
Contamination of the hydraulic system with foreign material will
reduce the service life of the hydraulic system components.
To prevent contaminants from entering the hydraulic system, always
plug or cap the lines, fittings, or hoses as they are disconnected. Cover
any disassembled components and clean them properly before
assembly.
Clean the hydraulic system properly after any major component
exchange or especially after a component failure, to remove any
contamination.
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1. Lower the temperature of bearing race (28) and race (29) . Install bearing race (28) and race
(29) into case assembly. Align the hole in bearing race (29) to the case assembly.
2. Install the dowel. Install plug (27) .
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3. Raise the temperature of cage (18) . Lower the temperature of bearing race (26) . Install
bearing race (26) into cage (18) .
4. Install retaining ring (25) into cage (18) .
5. Raise the temperature of bearing (23) . Install bearing (23) onto pinion (22) . Install the
bearing spacer.
6. Raise the temperature of bearing (21) . Install bearing (21) . Install plate (20) . Install bolts
(19) .
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7. Use Tooling (F) to measure dimension Y and dimension Z record results. Use a micrometer
to measure dimension X record results. Add measured results. X + Z = dimension B.
Subtract dimension B from dimension Y. This is dimension W. Add shims (24a) to
dimension W to achieve a measurement of 135.35 ± 0.08 mm (5.328 ± 0.003 inch).
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8. Install bearing (24) .
9. Attach Tooling (C) and a suitable lifting device. Position cage (18) and the pinion as a unit.
The weight of the unit is approximately 34 kg (75 lb).
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10. Install bolts (17) .
11. Raise the temperature of bearing (16) . Install bearing (16) onto shaft (14) .
12. Position gear (15) in transfer case (12) . Install shaft (14) . Support shaft (14) . Install the
retainer and install bolt (13) . Tighten bolt (13) to a torque of 115 ± 7 N·m (85 ± 5 lb ft).
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13. Install races and bearings (11) and (11a) into cage assembly (3) .
14. Position cage assembly (3) , as shown. Install O-ring seal (10) . Position plate (9) . Install
bolts (8) .
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15. Install seal (7) into cage assembly (3) .
16. Install cage assembly (3) . Install Tooling (G) in order to check the backlash. Backlash must
be maintained. Use the shims (not shown) in order to obtain a backlash of 0.15 to 0.33 mm
(0.006 to 0.013 inch) between the gear and the pinion.
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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17. Install yoke (4) . Install the O-ring seal. Install retainer (6) . Install bolt (5) . Tighten bolt (5)
to a torque of 115 ± 7 N·m (85 ± 5 lb ft).
18. Install cover (1) .
End By: Install the transmission. Refer to Disassembly and Assembly, "Torque Converter to
Transmission - Connect".
Mon Jul 19 00:36:05 UTC+0800 2021
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Shutdown SIS
Previous Screen
i02156915
Transmission Planetary - Disassemble
SMCS - 3030-015
Disassembly Procedure
Table 1
Required Tools
A
138-7574 Link Bracket 4
1U-9200 Lever Puller Hoist 1
B 138-7575 Link Bracket 3
C 1P-0510 Driver Gp 1
D 1P-7407 Eyebolt 1
E 0S-1591 Bolt 2
F 1P-0520 Driver Gp 1
G -
Forcing Bolt
1/2 - 13 by 3 inch
2
Start By:
a. Separate the torque converter and the retarder from the transmission. Refer to Disassembly
and Assembly, "Torque Converter from Transmission - Separate".
b. Remove the transmission hydraulic control valve. Refer to Disassembly and Assembly,
"Transmission Hydraulic Control Valve - Disassemble".
c. Remove the transmission lubrication relief valve. Refer to Disassembly and Assembly,
"Relief Valve (Transmission Lubrication) - Remove".
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d. Remove the transmission position sensor. Refer to Disassembly and Assembly, "Position
Sensor (Transmission Gear) - Remove".
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, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat products.
Dispose of all fluids according to local regulations and mandates.
1. Install Tooling (A) and a suitable lifting device onto transmission (1).
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2. Remove six of bolts (2). Leave two of bolts (2) in place.
3. Lift transmission (1) onto suitable cribbing. The weight of transmission (1) is approximately
570 kg (1250 lb).
4. Remove cover (3).
5. Install Tooling (B) and a suitable lifting device.
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6. Remove the remaining two bolts from Step 2. Remove transfer gear case (4) from the
transmission planetary. The weight of transfer gear case (4) is approximately 205 kg
(450 lb).
7. Place transfer gear case (4) onto suitable cribbing.
8. Remove ring (5). Remove bolts (6).
9. Remove cage (7).
10. Remove retaining ring (8).
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11. Remove bolts (9).
12. Install Tooling (G). Remove plate (12), hub (11), and bearing (10) as a unit.
13. Use Tooling (C) and a hammer in order to drive hub (11) from bearing (10).
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14. Remove friction discs (13) and the clutch plates (not shown).
15. Install Tooling (E) in plate (14). Tighten Tooling (E) evenly in order to compress spring
discs (15).
16. Remove ring (16).
17. Slowly loosen Tooling (E). Remove plate (14). Remove spring discs (15).
18. Remove housing assembly (17).
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Caterpillar Cat 637G Wheel Scraper (Prefix CEM) Service Repair Manual Instant Download.pdf

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