Caterpillar Cat 324E L Excavator (Prefix LDG) Service Repair Manual (LDG00001 and up).pdf

Service Repair Manual
Models
324E L and 324E LN Excavator

A
1U-7506 Adapter 1
8T-4244 Nut 6
8T-4223 Hard Washer 6
- Threaded RodM12 x 1.75 by 250 mm (10 in) long 1
B
8T-0651 Bolt 1
C 3E-3882 Eyebolt 1
D 1P-1859 Retaining Ring Pliers 1
E
1P-0510 Driver Gp 1
9S-9152 Bearing Puller Gp 1
F 1P-1861 Retaining Ring Pliers 1
Start By:
A. Remove the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Remove".
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.
1. Thoroughly clean the outside of the travel motor prior to disassembly.
2. Fasten the travel motor in Tooling (A) in a vertical position. The weight of the travel motor
is approximately 60 kg (132 lb).
3. Put an alignment mark across the head and the body of the travel motor for assembly
purposes. The head must be reinstalled in the head's original position on the body of the
travel motor.
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324E L & 324E LN Excavators LDG00001-UP (MACHINE) POWERED BY C7.1 En...
2020/7/30
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Illustration 1 g00887295
Note: During the removal of head (2) from the travel motor, be careful not to damage the
mating surfaces of the components.
Spring force can cause personal injury or death.
Do not repair until you have read the Operation and Maintenance
Manual.
4. Remove bolts (1) .
5. Remove head (2) from the body of the travel motor.
6. Remove O-ring seal (3), port plate (4), and bearing (5) .
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7. Remove O-ring seals (6). Remove springs (7) .
This is an example of the use of Tooling (B) .
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8. Place a shop towel over brake piston (8). Retain brake piston (8) with Tooling (B). Apply
approximately 525 kPa (75 psi) of shop air pressure to brake release Port (Y). Make sure
that the shop air pressure is free of water. Brake piston (8) will move up the piston guide,
and out of the piston guide. Remove brake piston (8) from the body of the travel motor.
9. Remove seal (9) and backup ring (10) from the brake piston.
10. Remove seal (11) and backup ring (12) from the brake piston.
11. Remove plates (13) and friction discs (14) .
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12. Install Tooling (C) into shaft (15). Use a prybar to remove the rotating assembly (16) from
the housing.
13. Remove Tooling (C) from shaft (15) .
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14. Remove shaft (15) from rotating assembly (16) .
15. Use Tooling (D) in order to remove retaining ring (17) from shaft (15) .
16. Install shaft (15) into a suitable press. Remove bearing race (18) from the shaft.
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17. Rotate shaft (15). Install shaft (15) into a suitable press. Install Tooling (E). Remove bearing
race (19) from shaft (15) .
18. Remove cam plate (20) from barrel assembly (21) .
19. Remove piston assemblies and retainer plate (22) from barrel assembly (21) .
Note: Place marks on the pistons and the barrel assembly. The pistons must be returned to
the original position.
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20. Remove ball (23) and springs (24) .
21. Remove bearing (25) .
22. Remove keys (26) and locating pins (not shown) from the body of the travel motor.
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23. Rotate the housing. Use Tooling (F) in order to remove retaining ring (27) .
24. Remove seal (28) .
25. Remove bolts (29) and cover (30) .
26. Remove seal (31) and backup ring (32) .
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324E L & 324E LN Excavators LDG00001-UP (MACHINE) POWERED BY C7.1 ...
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27. Remove piston actuator (33) and seal (34).
28. Remove O-ring seal (35) from the housing of the travel motor.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Jul 30 08:14:54 UTC+0800 2020
11/11
2020/7/30

Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 324E LN EXCAVATOR LDG
Configuration: 324E L & 324E LN Excavators LDG00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
324E and 329E Excavators and 329E MHPU Mobile Hydraulic Power Unit Machine
Systems
Media Number -KENR9844-04 Publication Date -01/04/2015 Date Updated -14/04/2015
i04216229
Travel Motor - Assemble
SMCS - 4351-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1U-7506 Adapter 1
8T-4244 Nut 6
- M12 x 1.75 X 250 mm (10 inch) Threaded Rod 1
C 3E-3882 Eyebolt 1
D 1P-1859 Retaining Ring Pliers 1
E
1P-0510 Driver Gp 1
9S-9152 Bearing Puller Gp 1
F 1P-1861 Retaining Ring Pliers 1
G - Loctite 242 -
1/11
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1. Install O-ring seal (35) onto the housing of the travel motor.
2. Install seal (34) and piston actuator (33). Lubricate the surfaces of piston actuator (33) with
lubricant that is being sealed.
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3. Install backup ring (32) and seal (31) .
4. Install cover (30) and bolts (29). Tighten bolts (29) to a torque of 28 ± 7 N·m (21 ± 5 lb ft).
5. Apply Tooling (G) to the mating surface of lip seal (28). Use Tooling (E) in order to install
lip seal (28). Lubricate the sealing lip of lip seal (28) with lubricant that is being sealed.
6. Use Tooling (F) in order to install retaining ring (27) .
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7. Rotate the housing.
8. Install keys (26) and locating pins (not shown) into the body of the travel motor.
9. Install bearing (25) .
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 springs (24) into the barrel assembly. Install ball (23) onto springs (24). Lubricate
ball (23) with lubricant that is being sealed.
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11. Lubricate the piston assemblies with lubricant that is being sealed. Install piston assemblies
and retainer plate (22) into barrel assembly (21).
Note: Take note of the mark on the piston assembly and the barrel assembly. The pistons
must be returned to the same position.
12. Lubricate cam plate (20) with lubricant that is being sealed. Install cam plate (20) onto
barrel assembly (21) .
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13. Install shaft (15) into a suitable press. Install bearing race (19) onto shaft (15) .
14. Rotate shaft (15) in the suitable press. Use Tooling (D) to install retaining ring (17) onto
shaft (15) .
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15. Install bearing race (18) onto shaft (15) .
Note: Bearing race (18) must contact retaining ring (17) .
16. Install Tooling (C) into shaft (15). Install shaft (15) into rotating assembly (16) .
17. Place the pump housing into Tooling (A) .
18. Use Tooling (C) in order to install rotating assembly (16) into the housing.
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19. The notches in cam plate (20) must align with keys (26). The keys are located in the bottom
of the housing of the travel motor.
20. Install plates (13) and friction discs (14) into the housing.
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Note: Install the plates and the discs alternately.
21. Install backup ring (12) and seal (11) onto the brake piston.
22. Install backup ring (10) and seal (9) onto the brake piston.
23. Rotate brake piston (8) .
24. Install brake piston (8) into the housing.
Note: Brake piston (8) must be level upon installation. The brake piston must be level in
order to prevent damage to the O-ring seals.
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25. Install springs (7) and O-ring seals (6) .
26. Lubricate port plate (4) with lubricant that is being sealed. Install O-ring seal (3), port plate
(4), and bearing (5) .
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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.
27. Install head (2) onto the body of the travel motor.
Note: During the installation of head (2) onto the travel motor, be careful not to damage the
mating surfaces of the components.
28. Install bolts (1). Tighten bolts (1) to a torque of 177 ± 18 N·m (130.5 ± 13.27 lb ft).
End By: Install the travel motor.
Thu Jul 30 08:15:53 UTC+0800 2020
11/11
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Shutdown SIS
Previous Screen
Product: EXCAVATOR
Systems
i04216189
Travel Motor - Install
SMCS - 4351-012
Installation Procedure
Table 1
Required Tools
A 9U-7692 Threaded Rod 2
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.
1. Thoroughly clean the mating surfaces of the travel motor and the final drive.
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2. Install new O-ring seal (6). Apply clean hydraulic oil on the O-ring seal.
3. Attach a suitable lifting device to travel motor (4), as shown.
4. The weight of the travel motor is approximately 57 kg (125 lb).
2/4
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5. Carefully install travel motor (4) onto Tooling (A). Slide the travel motor into the final
drive.
6. Install one of three bolts (5) that secures the travel motor to the final drive.
7. Remove Tooling (A) .
Typical example
8. Install remaining bolts (2) .
9. Connect hose assembly (3). Connect hose assembly (1) .
10. Fill the final drive with oil.
ReferenceRefer to Operation and Maintenance Manual, "Lubricant Viscosities" for the
proper oil viscosity.
ReferenceRefer to Operation and Maintenance Manual, "Final Drive Oil Level - Check" for
the correct filling procedure.
11. Install high efficiency filters in place of the pilot filter, the case drain filter, and the return
filter.
Note: High efficiency filters should not be run for more than 250 hours before you change
back to the standard filters.
12. Obtain a hydraulic oil sample from the main S·O·S port.
ReferenceRefer to Operation and Maintenance Manual, "Sampling Interval and Location of
Sampling Valve" for the correct location.
13. If the S·O·S sample exceeds ISO 18/15, flush the hydraulic system.
ReferenceRefer to Contamination Control Guidelines, SEBF8436, "Hydraulic System
Flushing Procedure for 322C Hydraulic Excavators" for further information.
3/4
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End By: Install the travel brake valve. Refer to Disassembly and Assembly, "Travel Brake Valve
- Install".
Thu Jul 30 08:16:52 UTC+0800 2020
4/4
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Shutdown SIS
Previous Screen
Product: EXCAVATOR
Systems
i04249066
Final Drive - Remove
SMCS - 4050-011
Removal Procedure
Table 1
Required Tools
A
8S-7640 Stand 2
8S-7611 Tube 2
8S-7615 Pin 2
B 138-7574 Link Bracket 2
C 154-6184 Forcing Bolt (M 20) 2
Start By:
A. Separate the track assembly. Refer to Disassembly and Assembly, "Track - Separate".
B. Remove the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Remove".
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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.
2/3
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