Caterpillar Cat 637G Wheel Scraper (Prefix DEY) Service Repair Manual (DEY00001 and up)

1
Service Repair Manual
Models 637G Wheel Tractor
2
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Product WHEEL SCRAPER Model 637G WHEEL SCRAPER
DEY Configuration 637G Wheel Scraper Coal Bowl
DEY00001-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
i04332691
Torque Converter - Disassemble SMCS -
3101-015 Disassembly Procedure Table 1
Required Tools Required Tools Required Tools 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
E 8H-0663 Bearing Puller Gp (Nine Ton Capacity) 1
F 1P-2322 Combination Puller (Two Jaw or Three Jaw) 1
F 1P-0546 Puller Jaw 1
F 1P-0510 Driver Gp 1
Start By a. Separate the torque converter from
the transmission. Refer to Disassembly and
Assembly, "Torque Converter, Transmission and
Transfer Gear - Separate".
3
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.
Illustration 1 g00833596 1. Remove retaining
ring (1). Remove retarder rotor (2).

• Illustration 2 g00833624
• Remove seal ring (4) from carrier (3) on each
  side of retarder rotor (2).
• Remove carrier (3).

4
Note The carrier will be destroyed when the
carrier is removed from the retarder.
Illustration 3
g00833629
4. Remove bolts (5). Remove race (6).

• Illustration 4 g00833647
• Attach Tooling (A) and a suitable lifting device
  to housing assembly (7). The weight of housing
  assembly (7) is approximately 73 kg (160 lb).
• Remove housing assembly (7) from the torque
  converter.

5
Illustration 5
g00833655

1. Position housing assembly (7), as shown.
2. Remove bolts (9). Remove gear (8).

Illustration 6 g00833666 9. Use Tooling (B) to
remove retaining ring (10) from each side of gear
(8).
Illustration 7
g00833676
10. Remove shaft (11).
6
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Illustration 8 g00833678 11. Use a suitable
press and Tooling (C) to remove the bearing from
gear (8).
Illustration 9
g01160856

• Illustration 10 g00837275
• Remove bolts (12). Remove housing assembly (13).
• Remove piston (14) from housing assembly (13).
  Remove seals (15).

Illustration 11
g00837277
8
14. Remove disc assembly (16).
Illustration 12
g00837274
Illustration 13
g00837280

• Illustration 14 g01160859
• Remove retainer (17) from shaft (22). Remove ring
  seals (18).
• Remove gear (19) from shaft (22).
• Remove bolts (20) and retainer (21). Use Tooling
  (D) to remove retaining ring (23).

9
Illustration 15 g01160895 18. Position the
torque converter, as shown. Remove bolts (24).

• Illustration 16 g01160896
• Attach Tooling (A) and a suitable lifting device
  to impeller assembly (25). The weight of
  impeller assembly (25) is approximately 41 kg (90
  lb).
• Remove impeller assembly (25) from housing (26).

Illustration 17 g01160897 21. Remove retaining
ring (27) and the bearing.
10
Illustration 18 g01160860 22. Use Tooling (F) to
separate shaft (22) from carrier assembly (28)
and the bearing. Remove the bearing.
Illustration 19 g00837179 23. Remove bolts (29).
Remove stator assembly (31) from impeller (30).
Illustration 20
g01160933
11
Illustration 21
g01160931

1. Remove bolts (32) from gear (33).
2. Use Tooling (B) to drive carrier assembly (28)
   and gear (33) out of impeller (30).

Illustration 22 g00837205 26. Use Tooling (B) to
drive carrier (34) out of impeller (30).
Illustration 23 g01054015 27. Use Tooling (B) to
drive carrier assembly (28) out of bearing (35).
12
Illustration 24 g01054017 28. Remove gear (33)
from carrier assembly (28).
Illustration 25
g01054020
29. Remove seal ring (36).
Illustration 26 g01160861 30. Remove rings (37).
Use Tooling (D) to remove ring (38) from shaft
(22).
13
Illustration 27 g01160862 31. Install Tooling
(E). Tooling (E) must be seated on the shoulders
of turbine (39). Tooling (E) must not contact
the splines on shaft (22). Note Tooling (E)
must be used in order to support turbine (39) or
damage to turbine (39) will result.
Illustration 28 g01160863 32. Use a suitable
press to remove shaft (22) from turbine (39).
Remove bearing race (40) and the spacer from
turbine (39).
Copyright 1993 - 2021 Caterpillar Inc. All
Rights Reserved. Private Network For SIS
Licensees.
Sat Jun 26 161710 UTC0800 2021
14
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Product WHEEL SCRAPER Model 637G WHEEL SCRAPER
DEY Configuration 637G Wheel Scraper Coal Bowl
DEY00001-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 Required Tools Required Tools 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.
15
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).
Illustration 2 g01160941 2. Install the spacer.
Raise the temperature of bearing race (40).
Install bearing race (40) to turbine (39) and
shaft (22).
Illustration 3
g01054020
3. Install seal ring (36).
16
Illustration 4
g01054017
4. Install gear (33) to carrier assembly (28).
Illustration 5 g01054015 5. Raise the
temperature of bearing (35). Install bearing (35)
on carrier assembly (28).
Illustration 6 g00837205 6. Lower the
temperature of carrier (34). Install carrier (34)
into impeller (30). Note Make sure that the bolt
holes are aligned.
17
Illustration 7 g00837194 7. Position gear (33).
Install bolts (32). Tighten bolts (32) to a
torque of 50 7 Nm (37 5 lb ft).
Illustration 8 g00837179 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 Nm (30 4 lb ft).
Illustration 9 g01160943 9. Install carrier
assembly (28) on impeller (39).
18
10. Raise the temperature of the bearing. Install
the bearing on shaft (22).
Illustration 10 g01160897 11. Lower the
temperature of the bearing. Install the bearing.
Install retaining ring (27).
Illustration 11 g01160896 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).
Illustration 12
g01160895
19
13. Position the torque converter, as shown.
Install bolts (24). Tighten bolts (24) to a
torque of 30 5 Nm (22 4 lb ft).
Illustration 13
g01160859
Illustration 14
g00837280

• Illustration 15 g00837274
• Use Tooling (D) to install retaining ring (23).
  Position retainer (21). Install bolts (20).
  Tighten bolts (20) to a torque of 50 7 Nm (37
  5 lb ft).
• Install gear (19) on shaft (22).

20
16. Install ring seals (18). Install retainer
(17) on shaft (22).
Illustration 16
g00837277
17. Install disc assembly (16).
Illustration 17
g00837275

• Illustration 18 g01160856
• Install seals (15). Install piston (14) into
  housing assembly (13).
• Install housing assembly (13).

21
20. Install bolts (12). Tighten bolts (12) to a
torque of 50 7 Nm (37 5 lb ft).
Illustration 19 g00833678 21. Use a suitable
press and Tooling (C) to install the bearing to
gear (8).
Illustration 20
g00833676
22. Install shaft (11).
Illustration 21 g00833666 23. Use Tooling (B) to
install retaining ring (10) on each side of gear
(8).
22
Illustration 22
g00833655

1. Position housing assembly (7), as shown.
2. Position gear (8). Install bolts (9).

• Illustration 23 g00833647
• Attach Tooling (A) and a suitable lifting device
  to housing assembly (7). The weight of housing
  assembly (7) is approximately 73 kg (160 lb).
• Install housing assembly (7) onto the torque
  converter.

Illustration 24
g00833629
23
28. Install race (6). Install bolts (5).
Illustration 25
g00833624

1. Install carrier (3).
2. Install seal ring (4) to carrier (3) on each side
   of retarder rotor (2).

• Illustration 26 g00833596
• 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.
Sat Jun 26 161806 UTC0800 2021
24
Shutdown SIS
Previous Screen
Product WHEEL SCRAPER Model 637G WHEEL SCRAPER
DEY Configuration 637G Wheel Scraper Coal Bowl
DEY00001-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
i02331325
Transfer Gears - Disassemble SMCS -
3159-015 Disassembly Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
A 1P-0520 Driver Gp 1
B 1P-0820 Hydraulic Puller 1
B 3H-0465 Push-Puller Plate 4
B 8B-7549 Puller Leg 2
B 8B-7551 Bearing Puller Gp 1
C 138-7573 Link Bracket 2
D 5F-7343 Bearing Puller Gp (Twenty Ton Capacity) 1
D 1P-0520 Driver Gp 1
E 8B-7551 Bearing Puller Gp 1
E 1P-0520 Driver Gp 1
Start By A. Remove the transmission. Refer to
Disassembly and Assembly, "Torque Converter,
Transmission, and Transfer Gear - Separate".
25
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.
Illustration 1
g00834630
1. Remove cover (1) .
26

• Illustration 2 g00834574
• Remove bolt (5). Remove retainer (6). Remove the
  O-ring seal. Remove yoke (4) .
• Remove bolts (2). Remove cage assembly (3) .

Illustration 3
g00834584
4. Remove seal (7) from cage assembly (3) .
Illustration 4
g00834586
27
5. Position cage assembly (3). Remove bolts (8).
Remove plate (9). Remove O-ring seal (10) .
Illustration 5
g00834589
Illustration 6 g00834834 6. Use Tooling (A) and
a suitable press in order to remove bearings (11)
from cage assembly (3) .
28

• Illustration 7 g00834594
• Note If the shaft is not supported, the shaft
  will fall when bolt (13) is removed.
• Position transfer case (12). Support shaft (14).
  Remove bolt (13). Remove the retainer. Remove
  shaft (14) .
• Remove gear (15) from transfer case (12) .

Illustration 8 g00834598 9. Use Tooling (B) in
order to remove bearing (16) from shaft (14) .
Illustration 9
g00834608
10. Remove bolts (17) .
29
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Illustration 10 g00834615 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).
Illustration 11 g00834620 12. Remove bolts (19).
Remove plate (20). Remove bearing cone (21) .
Illustration 12
g00834621
31
13. Use Tooling (D) and a suitable press in order
to remove cage (18) from pinion (22) .
Illustration 13 g00834623 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) .
Illustration 14 g00834625 15. Remove retaining
ring (25) in order to remove bearing cup (26)
from cage (18) .
32
Illustration 15 g00834626 16. Use Tooling (A)
and a suitable press in order to remove the
bearing cup from cage (18) .
Illustration 16 g00834628 17. Remove plug (27).
Remove the dowel that holds the race in position.
Illustration 17 g00834629 18. Remove bearing
race (28). Remove bearing race (29) .
33
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Friend! Thank you very much for visiting. Full
manual if required, please enter the following
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