Caterpillar Cat 325C and 325C L Excavator (Prefix JLD) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
325C and 325C L Excavator

Shutdown SIS
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Product: EXCAVATOR
Model: 325C EXCAVATOR JLD
Configuration: 325C & 325C L Excavators JLD00001-UP (MACHINE) POWERED BY 3126 Engine
Disassembly and Assembly
325C Excavator Machine Systems
Media Number -RENR5367-11 Publication Date -01/01/2012 Date Updated -17/02/2017
i05453056
Final Drive - Remove
SMCS - 4050-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
8S-7611 Handle As 2
8S-7615 Pin As 2
283-1495 Stand Assembly 2
B 439-3939 Link Bracket As 2
C
154-6184 Forcing Bolt (M 20) 2
154-6185(1)
Forcing Bolt (M 24) 2
(1)
For Use on 329 and 330 sales models
Start By:
a. Separate the track assembly.
b. Remove the travel motor.
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Illustration 1 g00489826
Typical Example
Note: Adjust the height of Tooling (A) so that there is sufficient clearance between the
sprocket and the track for the removal of the final drive.
1. Lift the side of the machine in order to install Tooling (A) under the frame, as shown.
2. Fasten Tooling (B) and a suitable lifting device to final drive (1), as shown. Put a slight
lifting tension on the final drive.
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Note: Mark the orientation of bolt holes (2) for the travel motor for installation purposes.
3. Remove bolts (3) and the washers from the final drive.
4. Use Tooling (C) in order to remove the final drive from the frame.
5. Carefully remove final drive (1). The weight of final drive (1) and the sprocket is
approximately 312 kg (688 lb).
6. Remove Tooling (C) from the frame.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Jul 8 00:51:28 UTC+0800 2020
3/3
2020/7/8

Shutdown SIS
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Product: EXCAVATOR
i04758849
Final Drive - Disassemble
SMCS - 4050-015
Disassembly Procedure (227-6116)
Table 1
Required Tools
A 1P-2420 Transmission Repair Stand 1
B 138-7573 Link Bracket 2
C 1P-1863 Retaining Ring Pliers 1
D 194-3878 Spanner Socket 1
E 138-7574 Link Bracket 2
F
5F-7366 Forcing Screw 1
1P-5546 Crossblock 1
1U-9889 Crossblock 1
1P-0520 Driver Group 1
6V-7888 Puller Leg 2
1H-3112 Puller Assembly 1
1P-5551 Adjustable Screw Assembly 1
G
1U-7600 Slide Hammer Puller Gp 1
8T-0266 Bolt 1
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Start By:
A. Remove the final drive. Refer to Disassembly and Assembly, "Final Drive - Remove".
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of
the component should be thoroughly cleaned. This will prevent dirt from entering the
internal mechanism.
Note: Some of the images that are in this procedure do not show the sprocket assembly that
is attached to the final drive housing. If necessary, the weights that are given include the
weight of the sprocket assembly.
1. Put an alignment mark across the sections of the final drive for assembly purposes. The
parts must be reinstalled in the part's original locations.
2. Fasten the final drive to Tooling (A), as shown. The weight of the final drive assembly is
3. Remove bolts (1) and the washers that hold the cover in position.
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4. Remove the setscrews from the cover. Fasten Tooling (B) and a suitable lifting device to
cover (2), as shown. Remove the cover. The weight of the cover is approximately 32 kg (70
lb).
5. Remove bolts (3). Remove gear (5). Check plate (6). Replace plate (6) if wear is shown.
Remove plugs (4) from cover (2) .
6. Remove O-ring seal (7) from plugs (4) .
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7. Remove gear (8). Remove spacer (9) .
8. Remove retaining ring (10) with Tooling (C). Remove washer (11). Remove gear (12).
Remove bearing assembly (13). Remove second washer (11) .
9. Repeat Step 8 for the remaining two gear assemblies.
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10. Remove retaining ring (14) .
11. Remove carrier assembly (15) .
12. Use a suitable press in order to remove the shafts from carrier assembly (15) .
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14. Remove retaining ring (18) .
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16. Disassemble carrier assembly (19), as follows.
a. Drive spring pin (20) into planetary shaft (21) with a hammer and a punch.
b. Remove planetary shaft (21) .
c. Remove spring pin (20) from planetary shaft (21) with a hammer and a punch.
d. Remove thrust washers (22) and planetary gear (24) from the carrier assembly.
e. Remove bearing (23) from planetary gear (24) .
17. Repeat Steps 16.a through 16.e for the other two planetary.
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20. Use two people to remove carrier assembly (27). The weight of the carrier assembly is
21. Disassemble carrier assembly (27), as follows.
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a. Drive spring pin (29) into planetary shaft (28) with a hammer and a punch.
b. Remove planetary shaft (28) .
c. Remove spring pin (29) from planetary shaft (28) with a hammer and a punch.
d. Remove thrust washers (30) and planetary gear (32) from the carrier assembly.
e. Remove two bearings (31) from the planetary gear.
22. Repeat Steps 21.a through 21.e for the other two planetary gears.
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23. Use two people to remove gear (33). The weight of gear is approximately 41 kg (90 lb).
24. Remove O-ring seal (34) .
25. Remove bolts (35A) and plates (35B) .
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325C & 325C L Excavators JLD00001-UP (MACHINE) POWERED BY 3126 Engi...
2020/7/8

26. Use Tooling (G) to remove dowel (37) from stopper plate (35) .
27. Secure Tooling (D) to stopper plate (35). Use Tooling (D) to remove stopper plate (35) .
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28. Use Tooling (E) and a suitable lifting device to remove housing (36). The weight of housing
(36) is approximately 100 kg (220 lb).
29. Remove Duo-Cone seal (39A) from housing (38) .
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30. Remove Duo-Cone seal (39B) from housing (36) .
31. Use Tooling (F) in order to remove bearings (40) and (41) from housing (36) .
32. If necessary, remove the final drive sprocket from the sprocket housing. Refer to
Disassembly and Assembly, "Final Drive Sprocket - Remove and Install".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Jul 8 00:52:24 UTC+0800 2020
13/13
2020/7/8

Shutdown SIS
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Product: EXCAVATOR
i04758848
Final Drive - Assemble
SMCS - 4050-016
Assembly Procedure (227-6116)
Table 1
Required Tools
A 1P-2420 Transmission Repair Stand 1
B 138-7573 Link Bracket 2
C 1P-1863 Retaining Ring Pliers 1
D
194-3878 Spanner Wrench As 1
194-3884 Spacer 1
E 138-7574 Link Bracket 2
H 6V-7030 Micrometer Depth Gauge Group 1
J FT-2770 Leak Down Test Tool 1
K 1U-6396 O-Ring Assembly Compound 1
L 5P-3931 Anti-Seize Compound 1
M 1U-8846 Gasket Sealant 1
N 8T-0531 Duo-Cone Seal Installer As 1
P 5P-3931 Anti-Seize Compound 1
Q 240-1886 Drill Fixture Gp 1
R 9S-3263 Thread Lock Compound 1
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Note: Cleanliness is an important factor. Before assembly, clean all parts thoroughly 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. 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: O-ring seals, gaskets, and seals should always be replaced. A used O-ring seal may not have
the same sealing properties as a new O-ring. Use Tooling (K) during the assembly procedure.
Note: Apply a light film of hydraulic oil to all components before assembly.
Note: Some of the images that are in this procedure do not show the sprocket assembly that is
attached to the final drive housing. If necessary, the weights that are given include the weight of
the sprocket assembly.
1. Apply Tooling (P) to the outer diameter of the bearings.
2. Use a suitable press to Install bearings (40) and (41). Make sure that bearing (41) and
bearing (40) contact the counterbore in housing (36) .
3. Use Tooling (N) to install Duo-Cone seal (39B) .
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4. Use Tooling (N) to install Duo-Cone seal (39A) onto housing (38).
5. Use Tooling (E) and a suitable lifting device to install housing (36) onto housing (38). The
weight of housing (36) is approximately 100 kg (220 lb).
6. Remove Tooling (E) from housing (36) .
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7. Install stopper plate (35). Do not tighten stopper plate assembly (35) at this time.
Note: Stopper plate (35) will secure housing (36) to housing (38) .
8. Install Tooling (E) and a suitable lifting device to housing (36). The combined weight of
housing assembly (36) and (38) is approximately 120 kg (265 lb). Install housing assembly
(36) and (38) in a suitable press.
9. Remove stopper plate (35) .
10. Assemble Tooling (D), as shown.
11. Install Tooling (D) into housing (36), as shown.
12. Apply a force of 4000 kg (8818 lb) to the top of Tooling (D). Rotate housing (36) in order to
seat the bearings.
13. Reduce the force on the top of Tooling (D) to 1000 kg (2205 lb).
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14. Use Tooling (H) to take a measurement in three locations. Average the three measurements
and record the average measurement as Dimension (W) .
15. Remove Tooling (D) .
16. Separate Tooling (D) .
17. Use a micrometer in order to measure the thickness at three locations of the spacer from
Tooling (D). Record the average measurement as Dimension (X) .
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18. Use a micrometer in order to measure the thickness at three locations of stopper plate (35).
Record the average measurement as Dimension (Y) .
19. Subtract Dimension (X) from Dimension (Y) and record this figure as Dimension (Z) .
20. Install stopper plate (35) onto housing (38). Do not tighten stopper plate (35) at this time.
Stopper plate (35) will secure the final drive assembly while the final drive assembly is
repositioned onto Tooling (A) .
21. Use Tooling (E) and a suitable lifting device to reposition the final drive assembly onto
Tooling (A). The combined weight of housing assembly (36) and (38) is approximately 120
kg (265 lb).
22. Secure the final drive assembly to Tooling (A) .
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23. Secure the spanner socket from Tooling (D) to stopper plate (35) .
24. In order to determine the final bearing preload, add Dimension (W) to Dimension (Z) and
record this figure as Dimension (V) .
25. Use Tooling (H) to measure the distance in three locations.
26. Tighten stopper plate (35) until the average of the measurements is equal to Dimension (V) .
27. Remove Tooling (D) .
28. Install Tooling (Q) and a suitable vacuum onto stopper plate (35) .
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29. Use a suitable drill and Tooling (Q) in order to drill a hole to the depth of 15 mm (0.6 inch)
in the stopper palte and in housing (38) .
30. Install dowel (37) .
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31. Apply Tooling (R) on bolts (35A). Install plate (35B) and bolts (35A) .
32. Repeat Steps 28 through 31 for the opposite side of stopper plate (35) .
33. Install O-ring seal (34) on housing (36) .
34. Install gear (33) on housing (36).
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35. Assemble carrier assembly (27), as follows.
a. Use a deburring tool in order to remove the metal burr from the openings in the
carrier.
b. Install two bearings (31) in planetary gear (32) .
c. Install thrust washers (30) and planetary gear (32) in the carrier assembly.
d. Install planetary shaft (28) in the carrier assembly.
e. Align the split in spring pin (29) to the top or to the bottom. Make a stake mark on
each side of the spring pin hole in the carrier. Each stake mark should be
approximately 1.50 mm (0.059 inch) from the outside diameter of the spring pin hole.
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f. Drive spring pin (29) into planetary shaft (28) with a hammer and a punch.
36. Repeat Steps 35.a through 35.e in order to install the other two planetary gears in the carrier.
37. Use two people to install carrier assembly (27) in gear (33). The weight of carrier assembly
(27) is approximately 38 kg (85 lb).
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Caterpillar Cat 325C and 325C L Excavator (Prefix JLD) Service Repair Manual Instant Download.pdf

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