Caterpillar Cat 315C Excavator (Prefix CJC) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
315C and 315C L Excavator

Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 315C EXCAVATOR CJC
Configuration: 315C & 315C L Excavators CJC00001-UP (MACHINE) POWERED BY 3046 Engine
Disassembly and Assembly
315C Excavator Machine Systems
Media Number -RENR5525-05 Publication Date -01/11/2008 Date Updated -10/11/2008
i01959727
Travel Motor - Disassemble
SMCS - 4351-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 1P-0074 Slide Hammer 1
C 9S-9152 Bearing Puller 1
D
1U-9895 Crossblock 1
3H-0465 Push-Puller Plate 2
8T-0649 Bolt 2
9X-8257 Washer 2
E 5P-0975 Plate 1
Start By:
a. Remove the piston motor (travel). Refer to Disassembly and Assembly, "Piston Motor
(Travel) - Remove".
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
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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.
Note: Put identification marks on the motor and on all hose assemblies for installation purposes
and for the purpose of orientation. Plug all hose assemblies. This will help to prevent fluid loss
and this helps to keep contaminants from entering the system.
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.
Illustration 1 g00779154
1. Remove bolts (1).
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2. Remove bolts (2) from the traction control valve in order to install Tooling (A).
3. Remove traction control valve (3) and travel motor (4) from the final drive.
4. Remove Tooling (A). Remove four bolts (2). Remove traction control valve (3).
5. Remove socket head bolts (5). Remove O-ring seal (6) and O-ring seals (7). Remove head
(8).
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6. Remove shim (9).
7. Remove bearing (10).
8. Remove plugs (11) and the O-ring seals.
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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.
9. Remove adapter (14) and the O-ring seal. Remove spool (13) and spring (12) from head (8).
10. Remove washer set (15).
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11. Remove port plate (16).
12. Remove three small O-ring seals (17). Install Tooling (D) and Tooling (E), as shown.
Tooling (E) provides a protective cover for the barrel assembly. Tooling (E) prevents
Tooling (D) from damaging the surface of the barrel assembly.
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13. Retain piston (18) with Tooling (D) and apply approximately 517 kPa (75 psi) of shop air
pressure to brake release port (Y). Brake piston (18) will move out of the piston guide.
Remove brake piston (18) from the main housing.
14. Remove O-ring seal (19) and the backup ring and remove O-ring seal (20) and the backup
ring.
15. Remove piston guide (21). Remove O-ring seal (22).
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16. Remove O-ring seal (23) and backup ring (24).
17. Lay the travel motor housing on one side in order to remove rotating group (25) and brake
pack (26) as a unit.
18. Remove brake pack (26).
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NOTICE
In order to ensure that each piston assembly is installed into its original
bore, identify and mark each piston assembly, retaining plate and the
barrel before removing the piston assembly.
To avoid damage to the barrel assembly parts, do not allow the parts to
separate from the assembly during removal or installation.
19. Remove pistons (27) and retainer plate (28) from barrel (29) as a unit. Separate the pistons
from the retainer plate.
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.
20. Remove guide (30), spacer (31), and nine springs (32) from the barrel.
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21. Remove swashplate (33).
22. Use a magnet in order to remove keys (34) and pistons (35).
23. Use a magnet in order to remove pins (36).
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24. Remove shaft assembly (37). Remove plugs (38) and the O-ring seals.
25. Use Tooling (B) in order to remove seal (39).
26. Remove retaining rings (40) from each side of the bearing.
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27. Use a suitable press in order to remove bearing assembly (41) from shaft (42).
28. Use a suitable press and Tooling (C) in order to remove inner race (43) from shaft (42).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 315C EXCAVATOR CJC
Configuration: 315C & 315C L Excavators CJC00001-UP (MACHINE) POWERED BY 3046 Engine
Disassembly and Assembly
315C Excavator Machine Systems
Media Number -RENR5525-05 Publication Date -01/11/2008 Date Updated -10/11/2008
i01959745
Travel Motor - Assemble
SMCS - 4351-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
F 1P-0510 Driver Group 1
G 206-3689 Turning Tool 1
H 5P-0960 Molybdenum Grease 1
Note: Replace all O-ring seals and gaskets. Apply a light film of "10W" oil to all components
before assembly.
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.
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1. Raise the temperature of inner race (43). Lower the temperature of shaft (42). Use a soft
hammer in order to install inner race (43) on shaft (42).
2. Raise the temperature of bearing assembly (41). Lower the temperature of shaft (42). Install
bearing assembly (41) on shaft (42).
3. Install retaining rings (40) on each side of the bearing.
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4. Use Tooling (F) in order to install seal (39).
5. Use a soft hammer in order to install shaft assembly (37).
6. Install plugs (38) and the O-ring seals. Tighten plugs (38) to a torque of 140 ± 14 N·m
(103 ± 10 lb ft).
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7. Use a magnet in order to install pins (36).
NOTICE
The locating pin on each key is not centered. In order to prevent
damage to the barrel assembly during assembly of the travel motor, the
keys must be installed as shown. Also, the keys must be installed in the
key's original location in the body of the travel motor.
8. Install pistons (34) and keys (35).
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9. Install swashplate (33).
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.
10. Install nine springs (32), spacer (31), and guide (30) into the barrel.
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11. Install pistons (27) into the retainer plate (28). Install pistons (27) and retainer plate (28) as
a unit into barrel (29) .
Note: Use string in order to keep the rotating group from separating during installation.
12. Install rotating group (25).
13. Install brake pack (26).
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14. Install O-ring seal (23) and backup ring (24) on piston guide (21).
15. Install piston guide (21). Install O-ring seal (22).
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16. Install O-ring seal (19) and the backup ring and install O-ring seal (20) and the backup ring.
Note: Make sure that brake piston (18) is thoroughly clean and free of dirt and debris.
17. Install three small O-ring seals (17). Install piston (18).
18. Install port plate (16).
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19. Install washer set (15).
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.
20. Install spring (12) and spool (13) into head (8). Install adapter (14) and the O-ring seal into
head (8).
21. Install plugs (11) and the O-ring seals.
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22. Lower the temperature of bearing (10) and install bearing (10).
23. Use a shim or shims (9) so that the following requirements are met.
Note: During the following checks, turn the travel motor output shaft in a clockwise
direction.
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a. Use Tooling (G) in order to turn the output shaft. The travel motor output shaft does
not rotate with an applied torque of 440 N·m (325 lb ft) with the parking brake release
port open.
b. Apply the air pressure at orifice (X). Use Tooling (G) in order to turn the output shaft
when the parking brake release port is pressurized to 780 kPa (115 psi). Perform this
procedure with the inlet port and the outlet port open to the hydraulic oil tank. The
travel motor output shaft rotates with an applied torque of 29 N·m (21 lb ft) or less.
Note: It may be necessary to remove head (8) several times in order to determine the correct
thickness of shim or shims (9) that are used to adjust the rolling torque of the travel motor
output shaft.
24. Apply a thin layer of Tooling (H) on shim or shims (9). Install the shim or shims on the
head. The grease will hold the shim or shims in place during the installation of the head.
Install the head on the body of the travel motor.
NOTICE
To prevent possible damage to the travel motor, fill the unit with oil at
least to the fill port before operating the machine. Refer to the
Operation and Maintenance Manual for the correct oil specification.
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25. Install O-ring seal (6) and O-ring seals (7). Install head (8 ). Install socket head bolts (5).
Tighten bolts (5) to a torque of 177 ± 18 N·m (131 ± 13 lb ft).
26. Install Tooling (A). Install traction control valve (3). Remove Tooling (A). Install six bolts
(2). Tighten bolts (2) to a torque of 80 ± 8 N·m (59 ± 6 lb ft).
27. Install traction control valve (3) and travel motor (4) into the final drive as a unit.
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