The document provides instructions for disassembling and assembling the travel motor of a 320 GC excavator. It lists the required tools and parts. The disassembly process involves removing plugs and seals from the motor housing. Springs must be released carefully due to risk of injury. The brake piston is then unseated using air pressure before internal components of the motor can be accessed and replaced. The assembly procedure reverses the disassembly steps.

1. Service Repair Manual
Models
320 GC Excavator

2. Shutdown SIS
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Product: EXCAVATOR
Model: 320 GC EXCAVATOR ZBT
Configuration: 320 GC Excavator ZBT00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
320GC, 320 and 323 Excavators Machine Systems
Media Number -M0080364-08 Publication Date -01/09/2018 Date Updated -12/09/2018
i07505832
Travel Motor - Disassemble
SMCS - 4351-015
Disassembly Procedure
Reference: Special Instruction, "Visual Service Procedures - Colors and Symbols" , M0066576
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1P-2420 Transmission Repair Stand 1
FT-0957 Positioning Gp 3
B
- M16x2 Threaded Rod 3
8T-1757 Nut 9
9X-8268 Washer 9
C 421-5662 Lifting Eye Assembly 1
D 421-5663 Lifting Eye Assembly 2
E
1U-9895 Crossblock 1
3H-0465 Push-Puller Plate 1
8T-0298 Bolt 2
Start By:
a. Remove the travel motor.
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3. Illustration 1 g06345315
Remove plugs and the O-ring seals.
Illustration 2 g06344354
Remove plug and the O-ring seal. Repeat for the opposite side.
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4. 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.
Illustration 3 g06344402
Remove plug and the O-ring seal. Repeat for the opposite side.
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5. Illustration 4 g06344420
Illustration 5 g06344422
Personal injury can result from being struck by parts propelled by a
released spring force.
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6. Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
Illustration 6 g06344430
Repeat for the opposite side.
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7. Illustration 7 g06344444
Repeat for the opposite side.
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.
Illustration 8 g06344453
Repeat for the opposite side.
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8. Illustration 9 g06344464
Illustration 10 g06344670
Repeat for the opposite side.
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9. Illustration 11 g06344677
Repeat for the opposite side.
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.
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10. Illustration 12 g06344721
Remove the nuts of Tooling (B).
Illustration 13 g06344754
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11. Illustration 14 g06344762
Illustration 15 g06344776
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12. Illustration 16 g06344788
Remove the housing from the Tooling and place on a suitable bench.
To avoid personal injury, always wear eye and face protection when
using pressurized air.
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13. Illustration 17 g06344880
Use air pressure to unseat the brake piston.
Illustration 18 g06344925
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14. Illustration 19 g06344940
Illustration 20 g06344938
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15. Illustration 21 g06344946
Illustration 22 g06345220
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16. Illustration 23 g06345227
Illustration 24 g06345238
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18. Illustration 25 g06345243
Illustration 26 g06345252
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19. Illustration 27 g06345266
Illustration 28 g06345270
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20. Illustration 29 g06345278
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Dec 14 21:35:51 UTC+0800 2019
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21. Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 320 GC EXCAVATOR ZBT
Configuration: 320 GC Excavator ZBT00001-UP (MACHINE) POWERED BY C4.4 Engine
Disassembly and Assembly
320GC, 320 and 323 Excavators Machine Systems
Media Number -M0080364-08 Publication Date -01/09/2018 Date Updated -12/09/2018
i06969908
Travel Motor - Assemble
SMCS - 4351-016
Assembly Procedure
Reference: Special Instruction, "Visual Service Procedures - Colors and Symbols" , M0066576
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Gp 1
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