Caterpillar Cat 329D2 and 329D2L Excavator (Prefix RGA) Service Repair Manual (RGA00001 and up).pdf

Service Repair Manual
Models
329D2 and 329D2L Excavator

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Product: EXCAVATOR
Model: 329D2 L EXCAVATOR RGA
Configuration: 329D2 & 329D2 L Excavators RGA00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
326D2, 329D2 and 330D2 Excavators Machine Systems
Media Number -UENR6134-08 Publication Date -01/09/2018 Date Updated -12/09/2018
i02554256
Swing Motor - Assemble
SMCS - 5058-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
D 1P-1853 Retaining Ring Pliers 1
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. 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-rings, gaskets, and seals should always be replaced. A used O-ring may not have the
same sealing properties as a new O-ring. Use 1U-6396 O-Ring Assembly Compound during the
assembly procedure.
Note: Apply a light film of hydraulic oil to all components before assembly.
Note: If a failure occurs, an accurate diagnosis of the cause can prevent a recurrence. Information
is available to analyze failures for piston pumps and motors. Refer to Special Publication,
SEBD0641, "Analyzing Axial Piston Pump and Motor Failures".
Note: Inspect all parts. If any parts are worn or damaged use new parts for replacement. The
installation of used parts during reconditioning is acceptable. Reuse and salvage information is
available on piston pumps. Refer to Guideline For Reusable Parts and Salvage Operations,
SEBF8032, "Piston Pumps and Motors". During reconditioning, correct any conditions that might
have caused the original failure.
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329D2 & 329D2 L Excavators RGA00001-UP (MACHINE) POWERED BY C7.1 En...
2020/4/27
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Illustration 1 g01279840
1. Install seal (34) into the housing.
2. Lower the temperature of bearing (33).
3. Install bearing (33) into the housing.
4. Install O-ring seal (32) into housing (27).
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5. Raise the temperature of bearing race (31). Install bearing (31) onto the shaft.
6. Raise the temperature of bearing race (30). Install bearing (30) onto shaft (29).
7. Install shaft (29) and plate (28) into housing (27).
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8. Use Tooling (D) in order to install retaining ring (26).
9. Reassemble plates (24) and (25).
10. Install pistons (23) into plates (24) and (25).
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11. Install pistons (23) into barrel (22).
12. Install barrel (22) and the pistons as an assembly.
13. Install steel plates (20). Install plates (21).
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14. Install piston (19).
15. Install springs (18).
16. Install valve (16) and spring (17).
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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.
17. Install the O-ring seal and plug (15).
18. Lower the temperature of bearing (14). Install bearing (14).
19. Install O-ring seal (13) and plate (12).
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injury.
20. Position head (11) onto the motor housing.
21. Install bolts (10).
22. Tighten bolts (10) to a torque of 431 ± 43 N·m (318 ± 32 lb ft).
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injury.
23. Install backup up rings (5) and (7). Install O-ring seals (6), (8), and (9).
24. Install relief valves (4) into the head.
25. Tighten relief valves (4) to a torque of 177 N·m (130 lb ft).
26. Position anti-reaction valve (3) onto the head. Install bolts (2).
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27. Use a suitable lifting device to remove swing motor (1) from Tooling (A). The weight of
swing motor (1) is approximately 77 kg (170 lb).
End By:
a. Install the swing motor. Refer to Disassembly and Assembly, "Swing Motor - Install".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Apr 27 20:33:08 UTC+0800 2020
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329D2 & 329D2 L Excavators RGA00001-UP (MACHINE) POWERED BY C7.1 ...
2020/4/27

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Product: EXCAVATOR
i02460276
Swing Motor - Install
SMCS - 5058-012-ZW
Installation Procedure
Table 1
Required Tools
A 138-7574 Link Bracket 2
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1. Attach Tooling (A) and a suitable lifting device to swing motor (12). The weight of swing
motor (12) is approximately 77 kg (170 lb). Install swing motor (12). Install bolts (13).
2. Connect harness assembly (11). Install bolts (10). Connect hose assemblies (8) and (9) .
3. Connect hose assemblies (6) and (7). Tighten hose assemblies (6) and (7) to a torque of 76 ±
4 N·m (56 ± 3 lb ft).
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4. Connect hose assemblies (1), (2), (3), (4), and (5). Tighten hose assemblies (1) and (5) to a
torque of 150 ± 15 N·m (110 ± 12 lb ft). Tighten hose assemblies (2), (3), and (4) to a
torque of 190 ± 20 N·m (140 ± 15 lb ft).
Mon Apr 27 20:34:04 UTC+0800 2020
3/3
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Product: EXCAVATOR
i02460196
Swing Drive - Remove
SMCS - 5459-011
Removal Procedure
Table 1
Required Tools
A
132-8223 110 volt Power Pack 1
1U-6221 Torque Wrench 1
132-8143 36 mm Hex Link 1
B 138-7574 Link Bracket 4
C -
Forcing Bolt
M24 x 3 by 5 inch
2
Start By:
A. Remove the swing motor. Refer to Disassembly and Assembly, "Swing 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.
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Refer to Special Publication, NENG2500, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
1. Lower the bucket to the ground.
2. Thoroughly clean the area around the swing drive prior to removal.
3. Drain the oil from the swing drive. Refer to Operation and Maintenance Manual, "Swing
Drive Oil - Change".
4. Use Tooling (A) to remove bolts (1) that secure the swing drive to the main frame.
5. Attach Tooling (B) and a suitable lifting device to swing drive (2), as shown. The weight of
swing drive (2) is approximately 510 kg (1125 lb).
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6. Remove the two corks from the threaded holes in the swing drive housing. Install Tooling
(C) in order to separate the swing drive (2) .
7. Remove swing drive (2) from the machine. The weight of swing drive (2) is approximately
510 kg (1125 lb).
Note: Be careful not to damage pinion gear.
Mon Apr 27 20:35:00 UTC+0800 2020
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Product: EXCAVATOR
i06560081
Swing Drive - Disassemble
SMCS - 5459-015
Disassembly Procedure
Table 1
Required Tools
A 138-7573 Link Bracket 2
B 1U-8221 Nylon Sling 1
C 5P-5197 Pliers 1
Start By:
a. Remove the swing drive. Refer to Disassembly and Assembly, "Swing Drive - 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.
1/8
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1. Position the swing drive on suitable cribbing, as shown. The weight of the swing drive is
approximately 281 kg (620 lb).
2. Put an alignment mark on the cover and the housing of the swing drive for assembly
purposes.
3. Remove bolts (1) and cover (2).
4. Install Tooling (A) to cover (2).
5. Use a suitable lifting device and Tooling (A) to remove cover (2) from the ring gear of the
swing drive.
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6. Use two people to remove carrier assembly (3). The weight of the carrier assembly is
approximately 23 kg (50 lb).
7. Use the following procedure to disassemble carrier assembly (3).
a. Remove sun gear (4) from carrier assembly (3).
b. Drive spring pin (6) into planetary shaft (5) with a hammer and a punch.
3/8
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c. Remove planetary shaft (5), thrust washers (9), and planetary gear (7) from the carrier
assembly.
d. Remove bearing (8) from planetary gear (7).
e. Remove spring pin (6) from planetary shaft (5) with a hammer and a punch.
f. Repeat Steps 7.a through 7.e to remove the other three planetary gears from the
carrier assembly.
g. Remove retaining ring (10) with a screwdriver. Remove gear (11) from carrier (3).
h. Remove retaining ring (12) from gear (11).
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8. Remove retaining ring (15) that holds carrier assembly (13) in position.
9. Remove spacer (14) from carrier assembly (13).
10. Slide a piece of steel bar stock between the planetary gears in carrier assembly (13), as
shown. Make sure that the steel bar stock is centered in the carrier assembly. Fasten Tooling
(B) and a suitable lifting device to the steel bar stock, as shown. Slowly lift carrier assembly
(13) from the swing drive housing. The weight of carrier assembly (13) is approximately
39 kg (86 lb).
11. Use the following procedure to disassemble carrier assembly (13).
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a. Drive spring pin (16) into planetary shaft (17) with a hammer and a punch.
b. Remove planetary shaft (17), thrust washers (20), and planetary gear (18) from the
carrier assembly.
c. Remove bearings (19) from planetary gear (18).
d. Remove spring pin (16) from planetary shaft (17) with a hammer and a punch.
e. Repeat Steps 11.a through 11.d to remove the other three planetary gears from the
carrier assembly.
12. Use two people to remove ring gear (21) from the swing drive housing. The weight of the
ring gear is approximately 39 kg (86 lb).
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13. Use Tooling (C) to remove retaining ring (22).
14. Loosen, but do not remove bolts (23) that secure cage (24) to the swing drive housing.
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15. Place swing drive housing (25) in a suitable press, as shown. The combined weight of the
swing drive housing (25), the pinion shaft (28) and the bearing cage (24) is approximately
136 kg (300 lb).
16. Place suitable cribbing directly under the pinion shaft to prevent pinion shaft (28) from
falling when cage (24) is pressed out of the swing drive housing.
17. Remove and discard bolts (23) that secure cage (24) to the swing drive housing. Carefully
press cage (24) and pinion shaft (28) as a unit out of swing drive housing (25). Discard
pinion shaft (28), cage (24), bearing (29), sleeve (27), and bearing (26) as an assembly.
Mon Apr 27 20:35:55 UTC+0800 2020
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Product: EXCAVATOR
i06939513
Swing Drive - Assemble
SMCS - 5459-016
Assembly Procedure
Table 1
Required Tools
A 5P-5197 Pliers 1
B 138-7574 Link Brackets 2
C 138-7575 Link Bracket 3
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.
1/10
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1. Install lip seals (32) and O-ring seal (33) in bearing cage (29).
Note: Lubricate the seals and the seal surface of the shaft before you install the cage
assembly.
2. Carefully install cage (29) on shaft (31).
3. Raise the temperature of bearing (36) to 135 °C (275 °F) and use two people to install the
bearing on shaft (31). The weight of bearing (36) is approximately 35 kg (77 lb).
4. Install spacer (35) on shaft assembly (31). Install the spacer with relief against bearing (36).
2/10
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5. Raise the temperature of bearing (34) to 135 °C (275 °F). Install the bearing on shaft (31)
and against spacer (35).
6. Use Tooling (A) to install retaining ring (28) on shaft (31) and against bearing (34).
7. Install shaft assembly (31) in swing drive housing (16).
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Caterpillar Cat 329D2 and 329D2L Excavator (Prefix RGA) Service Repair Manual (RGA00001 and up).pdf