The document provides instructions for disassembling and assembling the free wheel components of a torque converter. It lists the required tools and gives step-by-step instructions with accompanying illustrations. The instructions cover removing components like the cover, impeller and carrier assembly, springs, and bearings. Reassembly involves lowering component temperatures and installing bearings, seals, gears, and other parts in the reverse order of removal. Torque specifications are provided for tightening bolts.
2. Shutdown SIS
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Product: WHEEL LOADER
Model: 938G II WHEEL LOADER B9Y
Configuration: 938G SERIES II WHEEL LOADER B9Y00001-UP (MACHINE) POWERED BY 3126B ENGINE
Disassembly and Assembly
938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Power
Train
Media Number -RENR6068-03 Publication Date -01/12/2008 Date Updated -19/12/2008
i01886319
Torque Converter - Disassemble - Fixed
SMCS - 3101-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 154-6181 Forcing Screw 2
C 2P-8312 Retaining Ring Pliers 1
D 1P-0520 Driver Gp 1
Start By:
A. Separate the torque converter from the transmission. Refer to Disassembly and Assembly,
"Torque Converter - Separate".
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3. Illustration 1 g00978219
1. Install Tooling (A) and a suitable lifting device onto cover (2). The weight of cover (2) is
approximately 159 kg (350 lb). Remove bolts (1) and remove cover (2) .
Illustration 2 g00978237
2. Attach Tooling (A) and a suitable lifting device onto the torque converter assembly. The
weight of the torque converter assembly is approximately 75 kg (165 lb). Place torque
converter assembly on a bench and remove bolts (3) .
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4. Illustration 3 g00978253
3. Install Tooling (B) and remove the impeller and carrier assembly (4). The weight of
impeller and carrier assembly (4) is approximately 36 kg (80 lb).
Illustration 4 g00978993
4. Use Tooling (C) and remove retaining ring (6). Remove retaining ring (5) and stator (7) .
Illustration 5 g00978994
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5. 5. If necessary, use a suitable press and Tooling (D) in order to remove adapter (8) from stator
(7) .
Illustration 6 g00978996
6. Use Tooling (C) in order to remove retaining ring (11) from carrier assembly (12). Remove
spacer (10) .
Illustration 7 g00978998
7. Use a soft faced hammer in order to remove carrier assembly (12) from impeller (9) .
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6. Illustration 8 g00979011
8. Remove retaining ring (13) from carrier assembly (12) .
Illustration 9 g00979012
9. Remove bolts (14) and remove gear (15) from impeller (16) .
Illustration 10 g00979015
10. Use a suitable press and Tooling (D) in order to remove bearing (17) from impeller (16) .
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7. Illustration 11 g00979023
11. Remove retaining ring (18) and cover (19) .
Illustration 12 g00979026
12. Remove O-ring seal (20). Use Tooling (C) and remove retaining ring (21) .
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8. Illustration 13 g00979029
13. Remove spacer (22) .
Illustration 14 g00979030
14. Use a suitable press and Tooling (D) in order to remove bearing (24) from housing (23) .
Illustration 15 g00979033
15. Remove bolts (25) and hub assembly (26) from turbine (27) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri May 1 18:20:55 UTC+0800 2020
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9. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 938G II WHEEL LOADER B9Y
Configuration: 938G SERIES II WHEEL LOADER B9Y00001-UP (MACHINE) POWERED BY 3126B ENGINE
Disassembly and Assembly
938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Power
Train
Media Number -RENR6068-03 Publication Date -01/12/2008 Date Updated -19/12/2008
i01885710
Torque Converter - Disassemble - Free Wheel
SMCS - 3101-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 154-6181 Forcing Screw 2
C 2P-8312 Retaining Ring Pliers 1
D 1P-0520 Driver Gp 1
Start By:
A. Separate the torque converter from the transmission. Refer to Disassembly and Assembly,
"Torque Converter - Separate".
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10. Illustration 1 g00978219
1. Install Tooling (A) and a suitable lifting device onto cover (2). The weight of cover (2) is
approximately 159 kg (350 lb). Remove bolts (1) and remove cover (2) .
Illustration 2 g00978237
2. Attach Tooling (A) and a suitable lifting device onto the torque converter assembly. The
weight of the torque converter assembly is approximately 75 kg (165 lb). Place torque
converter assembly on a bench and remove bolts (3) .
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11. Illustration 3 g00978253
3. Install Tooling (B) and remove the impeller and carrier assembly (4). The weight of
impeller and carrier assembly (4) is approximately 36 kg (80 lb).
Illustration 4 g00978315
4. Use Tooling (C) in order to remove retaining ring (5). Remove stator (14) .
Illustration 5 g00978321
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12. 5. Remove retaining ring (6) and plate (7) .
Illustration 6 g00978328
6. Remove washer (8) .
Illustration 7 g00978338
7. Remove race (9) .
Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
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13. Illustration 8 g00978386
8. Remove springs (10) and rollers (11) .
Illustration 9 g00978401
9. Remove retaining ring (12) and washer (13) .
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14. Illustration 10 g00978407
Illustration 11 g00978755
10. If necessary, raise the temperature of stator (14) and cam (15). Use a suitable press and
Tooling (D) in order to remove cam (15) .
Illustration 12 g00978759
11. Remove spacer (16) .
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15. Illustration 13 g00978760
12. Use a soft faced hammer in order to remove carrier assembly (17) from impeller (18) .
Illustration 14 g00978763
13. Remove retaining ring (19) from carrier assembly (17) .
Illustration 15 g00978766
14. Remove bolts (20). Remove gear (21) from impeller (18) .
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16. Illustration 16 g00978776
15. Use a suitable press and Tooling (D) in order to remove bearing (22) .
Illustration 17 g00978779
16. Remove retaining ring (23) and cover (24) .
Illustration 18 g00978780
17. Use Tooling (C) and remove retaining ring (25). Remove O-ring seal (26) .
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17. Illustration 19 g00978792
18. Remove spacer (27) .
Illustration 20 g00978794
19. Use a suitable press and Tooling (D) in order to remove bearing (28) from housing (29) .
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18. Illustration 21 g00978797
20. Remove bolts (30). Remove hub (31) from turbine (32) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri May 1 18:21:52 UTC+0800 2020
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19. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 938G II WHEEL LOADER B9Y
Configuration: 938G SERIES II WHEEL LOADER B9Y00001-UP (MACHINE) POWERED BY 3126B ENGINE
Disassembly and Assembly
938G Series II Wheel Loader and IT38G Series II Integrated Toolcarrier Power
Train
Media Number -RENR6068-03 Publication Date -01/12/2008 Date Updated -19/12/2008
i01885788
Torque Converter - Assemble - Free Wheel
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
C 2P-8312 Retaining Ring Pliers 1
Illustration 1 g00978839
1. Lower the temperature of bearing (28) and install bearing (28) into housing (29) .
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20. Illustration 2 g00978842
2. Install bolts (30). Tighten bolts (30) to a torque of 60 ± 7 N·m (44 ± 5 lb ft).
Illustration 3 g00978837
3. Lower the temperature of hub assembly (31) and install hub (31) into housing (29) .
Illustration 4 g00983541
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21. Note: Check the O-ring seal for wear or for damage. If necessary, replace the O-ring seal.
4. Install a new O-ring seal (26). Install spacer (27). Use Tooling (C) and install retaining ring
(25) .
Illustration 5 g00978779
5. Position cover (24) and install retaining ring (23) .
Illustration 6 g00978885
6. Lower the temperature of bearing (22) and install bearing (22) .
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22. Illustration 7 g00978766
7. Install gear (21) onto impeller (18). Install bolts (20). Tighten bolts (20) to a torque of 105 ±
15 N·m (77 ± 11 lb ft).
Illustration 8 g00978763
8. Install retaining ring (19) onto carrier assembly (17) .
Illustration 9 g00978886
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24. 9. Use a soft faced hammer and install carrier assembly (17) .
Illustration 10 g00978759
10. Install spacer (16) .
Illustration 11 g00978905
11. Install race (9) .
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25. Illustration 12 g00978906
Improper assembly of parts that are spring loaded can cause bodily
injury.
To prevent possible injury, follow the established assembly procedure
and wear protective equipment.
12. Install rollers (11) and springs (10). Install springs (10) with the maximum number of loops
toward the outside diameter of the cam.
Illustration 13 g00978908
13. Install washer (13) and retaining ring (12) .
Illustration 14 g00978328
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26. 14. Install washer (8) .
Illustration 15 g00978321
15. Install plate (7) and install retaining ring (6) .
Illustration 16 g00983544
16. Install stator (14) onto carrier assembly (17). Use Tooling (C) and install retaining ring (5) .
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