Caterpillar Cat 725C Articulated Truck (Prefix LFB) Service Repair Manual (LFB00001 and up).pdf

Service Repair Manual
Models
725C Articulated Truck

Shutdown SIS
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Product: ARTICULATED TRUCK
Model: 725C ARTICULATED TRUCK LFB
Configuration: 725C Articulated Truck LFB00001-UP (MACHINE) POWERED BY C9.3 Engine
Disassembly and Assembly
725C Articulated Truck Power Train
Media Number -UENR2383-01 Publication Date -01/10/2014 Date Updated -20/03/2018
i05848286
Torque Converter - Disassemble
SMCS - 3101-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3939 Link Bracket 3
B - M12 Guide Stud 3
C 1P-0510 Driver Gp 1
D 8T-4182 Bolt 2
E 1P-1863 Retaining Ring Pliers 1
F 8B-7551 Bearing Puller Gp 1
Start By:
a. Separate the torque converter housing from the planetary transmission.
Personal injury or death can result from improper lifting or blocking.
When a hoist or jack is used to lift any part or component, stand clear of
the area. Be sure the hoist or jack has the correct capacity to lift a
component. Install blocks or stands before performance of any work
under a heavy component.
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Approximate weights of the components are shown. Clean all surfaces
where parts are to be installed.
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.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01320995
1. Remove bolts (1) and allen head screws (2) that secure the retarder in position.
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2. Use Tooling (A) and a suitable lifting device to remove retarder (3) from the center shaft of
the torque converter. The weight of retarder (3) is approximately 48 kg (105 lb).
3. Remove allen head screws (4) and the washers from the torque converter housing.
4. Remove bolts (6) from torque converter housing (5) in order to release the separator plate.
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5. Attach Tooling (A) and a suitable lifting device to the carrier assembly. Install Tooling (B)
to the torque converter housing (5).
6. Use Tooling (A) and the suitable lifting device to raise torque converter housing (5)
approximately 5.00 mm (0.197 inch) from the torque converter. The weight of torque
converter housing (5) is approximately 159 kg (350 lb).
Note: Insert a soft drift into Hole (X).
7. Use a hammer and a suitable soft drift to tap the separator plate from torque converter
housing (5). This will enable the separator plate to remain with the torque converter.
8. Remove separator plate (7) from the torque converter assembly. Remove Tooling (B) from
the carrier assembly.
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9. Remove O-ring seal (8) from the outside diameter of separator plate (7).
10. Use Tooling (C) to remove seal (9) from separator plate (7).
11. Remove bolts (10) that secure flywheel pilot (11).
12. Install Tooling (D) in order to remove flywheel pilot (11) and O-ring seal (12).
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13. Remove bolts (13), retainer (14), and washer (15).
14. Carefully remove center shaft (16) from the center of the carrier. Remove bearing half (17).
15. Remove rings (18) from center shaft (16).
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16. Remove race (19), bearing (20), and race (21) from center shaft (16).
17. Remove carrier assembly (22) from gear (23) and the torque converter assembly.
18. Use Tooling (E) to remove retaining ring (24) from the groove of carrier assembly (22).
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19. Remove O-ring seal (27) from carrier assembly (22).
20. Remove seal (26) from seal carrier (25), as shown.
21. Invert carrier assembly (22) and remove rings (28).
22. Use Tooling (C), Tooling (F), and a suitable press in order to remove seal carrier (25) from
carrier assembly (22).
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23. Use Tooling (C), Tooling (F), and a suitable press to remove bearing (29) from carrier
assembly (22).
24. Remove retaining ring (30) and bearing race (31) from gear (32).
25. Remove bolts (33) in order to separate torque converter impeller (34) from the stator and the
turbine assembly.
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26. Remove allen head screws (35) in order to separate the hub (36) and the gear from the
torque converter impeller (34).
27. Remove torque converter impeller (34) from gear (23). Remove the O-ring seal from torque
converter impeller (34).
28. Remove O-ring seal (37) from gear (23).
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725C Articulated Truck LFB00001-UP (MACHINE) POWERED BY C9.3 Engine(...
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29. Remove retainer (38), race (39), and bearing (40) from stator (41).
30. Remove stator (41) from turbine (42).
31. Remove bearing (43), race (44), and retainer (45) from turbine (42).
32. Tap on hub (46) in order to separate bearing cup half (47) from the hub. This will allow the
coupling and the turbine to be removed from the housing.
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33. Remove coupling (48) and turbine (42) from housings (49) and (50).
34. Remove retaining ring (51), ring (52), and bearing half (53) from turbine (42).
35. Remove allen head screws (54) in order to separate coupling (48) from turbine (42).
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36. Remove bolts (55) and the washers that secure the flange of housing (50) to housing (49).
37. Separate housing (50) from housing (49).
38. Remove O-ring seal (56) from the groove of housing (50).
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39. Remove friction disc (57) from housing (49).
40. Remove piston (58) from housing (49).
41. Remove seal (59) from the groove of piston (58).
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42. Remove seal (60) from the groove of housing (49).
Note: Performing the following procedure will destroy bearing (61). This is performed in
order to replace bearing (61).
43. Use a hammer and a soft drift to remove bearing (61).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
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15/15
2020/1/31

Shutdown SIS
Previous Screen
Product: ARTICULATED TRUCK
Model: 725C ARTICULATED TRUCK LFB
Configuration: 725C Articulated Truck LFB00001-UP (MACHINE) POWERED BY C9.3 Engine
Disassembly and Assembly
725C Articulated Truck Power Train
Media Number -UENR2383-01 Publication Date -01/10/2014 Date Updated -20/03/2018
i05848366
Torque Converter - Assemble
SMCS - 3101-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3939 Link Bracket 3
B M-12 Guide Stud 3
C 1P-0510 Driver Gp 1
E 1P-1863 Retaining Ring Pliers 1
G 1P-1861 Retaining Ring Pliers 1
H 217-9911 Seal Guide 1
J 369-9451 O-Ring Assembly Compound 1
K - Loctite 536 -
Personal injury or death can result from improper lifting or blocking.
When a hoist or jack is used to lift any part or component, stand clear of
the area. Be sure the hoist or jack has the correct capacity to lift a
component. Install blocks or stands before performance of any work
under a heavy component.
1/17
2020/1/31

Approximate weights of the components are shown. Clean all surfaces
where parts are to be installed.
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.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned.
Inspect all parts. If any parts are worn or damaged, use new parts for replacement. All disassembly
and all assembly procedures must be performed on a clean work surface and in a clean hydraulic
area. Keep cleaned parts covered and protected at all times.
Note: Prior to assembly, all threads that require sealant must be cleaned with a tap.
Note: Apply a light film of transmission oil to all components before assembly.
2/17
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1. Install new bearing (61).
2. Invert the housing and install seal (60) into the groove of housing (49).
Note: Size the seal by holding a round object against the seal. Rotate the round object
around the seal, until the seal is flush with the outer diameter of the groove. Take care not to
damage the seal.
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3. Install seal (59) into the groove of piston (58).
Note: Size the seal by holding a round object against the seal. Rotate the round object
around the seal, until the seal is flush with the outer diameter of the groove. Take care not to
damage the seal.
Note: Prior to the installation of piston (58), lubricate the seal lightly with the lubricant that
is being sealed.
4. Install piston (58) into housing (49).
5. Place friction disc (57) in position on the piston in housing (49).
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6. Install O-ring seal (56) into the groove of housing (50).
Note: Prior to the installation of housing (50), lubricate the O-ring seal lightly with the
lubricant that is being sealed.
7. Place housing (50) in position on housing (49). Ensure that the bolt holes are aligned.
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8. Install the washers and bolts (55) in order to secure the flange of housing (50) to housing
(49). Tighten bolts (55) to a torque of 60 ± 7 N·m (44 ± 5 lb ft).
9. Position coupling (48) on turbine (42). Install allen head screws (54). Tighten allen head
screws (54) to a torque of 60 ± 7 N·m (44 ± 5 lb ft).
10. Raise the temperature of bearing half (53). Install bearing half (53), ring (52), and retaining
ring (51) onto turbine (42).
6/17
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Caterpillar Cat 725C Articulated Truck (Prefix LFB) Service Repair Manual (LFB00001 and up).pdf

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Caterpillar Cat 725C Articulated Truck (Prefix LFB) Service Repair Manual (LFB00001 and up).pdf