The document provides instructions for disassembling a travel motor. It describes 28 steps to remove parts like the head, port plate, bearings, brake piston, plates, seals, springs, and more. Tools include an adapter, bolts, nuts, eyebolts, retaining ring pliers, a bearing puller, and others. Safety notices warn of potential injury from released spring forces.
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2. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 326F L EXCAVATOR XFK
Configuration: 326F L & 326F LN Excavators XFK00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
326F, 329F and 330F Excavators Machine Systems
Media Number -UENR3313-07 Publication Date -01/09/2015 Date Updated -12/09/2018
i05435976
Travel Motor - Disassemble
SMCS - 4351-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1U-7506 Adapter 1
8T-4244 Nut 6
8T-4223 Hard Washer 6
- Threaded RodM12 x 1.75 by 250 mm (10 inch) 1
B
8T-0651 Bolt 1
8T-4167 Hard Washer 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.
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3. 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 original position on the body of the travel
motor.
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.
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4. 4. Remove bolts (1).
5. Remove head (2) from the body of the travel motor.
Illustration 2 g00887302
6. Remove O-ring seal (3), port plate (4), and bearing (5).
Illustration 3 g00887311
7. Remove O-ring seals (6). Remove springs (7).
Illustration 4 g00887331
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5. Illustration 5 g00890074
A typical example of the use of Tooling (B).
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.
Illustration 6 g00887336
9. Remove seal (9) and backup ring (10) from the brake piston.
10. Remove seal (11) and backup ring (12) from the brake piston.
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6. Illustration 7 g00887355
11. Remove plates (13) and friction discs (14).
Illustration 8 g00887401
Illustration 9 g00887405
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).
Illustration 10 g00887424
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7. 14. Remove shaft (15) from the rotating assembly .
Illustration 11 g00887426
15. Use Tooling (D) in order to remove retaining ring (17) from shaft (15).
Illustration 12 g00887445
Illustration 13 g00887463
16. Install shaft (15) into a suitable press. Remove bearing race (18) from the shaft.
17. Rotate shaft (15). Install shaft (15) into a suitable press. Install Tooling (E). Remove bearing
race (19) from shaft (15).
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8. Illustration 14 g00887501
18. Remove cam plate (20) from barrel assembly (21).
Illustration 15 g00887520
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.
Illustration 16 g00887558
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9. 20. Remove ball (23) and springs (24).
Illustration 17 g03431370
21. Remove bearing (25).
22. Remove keys (26) and locating pins (not shown) from the body of the travel motor.
Illustration 18 g00887589
23. Rotate the housing. Use Tooling (F) in order to remove retaining ring (27).
24. Remove lip seal (28).
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10. Illustration 19 g00887619
25. Remove bolts (29) and cover (30).
Illustration 20 g00887729
26. Remove seal (31) and backup ring (32).
Illustration 21 g00887754
27. Remove piston actuator (33) and seal (34).
Illustration 22 g00887762
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11. 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.
Tue Oct 13 10:19:51 UTC+0800 2020
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12. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 326F L EXCAVATOR XFK
Configuration: 326F L & 326F LN Excavators XFK00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
326F, 329F and 330F Excavators Machine Systems
Media Number -UENR3313-07 Publication Date -01/09/2015 Date Updated -12/09/2018
i07505849
Travel Motor - Disassemble
SMCS - 4351-015
S/N - B321-UP
S/N - EBK1-UP
S/N - ERL1-UP
S/N - FBR1-UP
S/N - GGJ1-UP
S/N - GHT1-UP
S/N - HBT1-UP
S/N - HCA1-UP
S/N - HCJ1-UP
S/N - HCK1-UP
S/N - JFR1-UP
S/N - JHF1-UP
S/N - KFA1-UP
S/N - LBN1-UP
S/N - LCG1-UP
S/N - MBX1-UP
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13. S/N - RCN1-UP
S/N - TMR1-UP
S/N - TPG1-UP
S/N - WBA1-UP
S/N - WGL1-UP
S/N - XFK1-UP
S/N - YHA1-UP
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1P-2420 Transmission Repair Stand 1
FT-0957 Positioning Gp 4
B
- M16x2 Threaded Rod 3
8T-1757 Nut 6
9X-8268 Washer 6
C 421-5662 Lifting Eye Assembly 1
D 421-5663 Lifting Eye Assembly 2
E
1U-9895 Crossblock 1
3H-0465 Push-Puller Plate 2
8T-0298 Bolt 2
Start By:
a. Remove the travel motor.
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14. Illustration 1 g06341880
1. Attach the travel motor to Tooling (A) and (B). The weight of the travel motor is
approximately 70 kg (154 lb).
2. Remove plugs (1) and the O-ring seals.
Illustration 2 g06344110
3. Remove plug (2) and the O-ring seal. Repeat for the opposite side.
Illustration 3 g06341912
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15. 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.
4. Remove plug (2A) and the O-ring seal. Repeat for the opposite side.
Illustration 4 g06341915
5. Remove spring (3).
Illustration 5 g06341917
6. Remove spool (4).
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16. Illustration 6 g06341942
Illustration 7 g06342000
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.
7. Remove bolts (5) and cap (6). Repeat for the opposite side.
8. Remove O-ring seal (10) from cap (6). Remove guide (9), spring (8), and washer (7) from
the head assembly. Repeat for the opposite side.
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17. Illustration 8 g06342005
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 plug (11), O-ring seal (12), spring (13), and ball (14) from cap (6). Repeat for the
other cap.
Illustration 9 g06342009
10. Remove spool (15).
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18. Illustration 10 g06343314
Illustration 11 g06343315
11. Remove relief valve (16). Remove O-ring seal (17) from relief valve (16).
12. Repeat for the opposite side.
Illustration 12 g06343359
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19. 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.
13. Remove the nuts of Tooling (B). Remove bolts (19) from head assembly (18).
Illustration 13 g06343366
14. Use Tooling (C) and a suitable lifting device to remove head assembly (18). The weight of
head assembly (18) is approximately 21 kg (47 lb).
Illustration 14 g06343374
15. Remove control plate (20) and bearing (21) from head assembly (18).
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20. Illustration 15 g06343381
16. Remove pins (22) and springs (23).
17. Remove O-ring seals (24) and (25).
Illustration 16 g06343383
18. Use Tooling (D) and a suitable lifting device to remove housing assembly (26) from
Tooling (A) and place on a suitable bench.
Illustration 17 g06343417
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21. To avoid personal injury, always wear eye and face protection when
using pressurized air.
19. Attach Tooling (E) to housing (26). Use air pressure to unseat brake piston (27). Remove
Tooling (E) and brake piston (27).
Illustration 18 g06343437
20. Remove back up rings (28) and O-ring seals (29) from brake piston (27).
Illustration 19 g06343462
21. Remove brake piston guide (30).
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23. Illustration 20 g06343464
22. Remove O-ring seal (31) from brake piston guide (30).
Illustration 21 g06343466
Illustration 22 g06343469
Note: Note the orientation of friction discs (32) and plates (33) for assembly purposes.
23. Remove friction discs (32) and plates (33).
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24. Illustration 23 g06343638
24. Remove rotating group (34) from housing (26).
Illustration 24 g06343777
25. Remove pistons (35) and retainer (36) from barrel (37).
Illustration 25 g06343783
26. Remove hold down ball (38) and springs (39) from barrel (37).
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