304 Mini Hydraulic ExcavatorEngine Supplement and Machine Systems Caterpillar


Travel Motor - Disassemble

Usage:

305 DGT

Disassembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1862     Snap Ring Pliers     1    
B     1U-7588     Pry Bar     2    

Start By:

  1. Remove the piston motor (travel). Refer to Disassembly and Assembly, "Piston Motor (Travel) - Remove" in this manual.


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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.


Note: Put identification marks on the travel motor and on all lines for installation purposes. Plug all lines. This will help to prevent fluid loss and this helps to keep contaminants from entering the system.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

  1. Put an alignment mark across the section of the travel motor and the final drive for assembly purposes. The parts must be reinstalled in the original locations of the parts.



    Illustration 1g00763560

  1. Remove plugs (1). Drain the oil.



    Illustration 2g00763551

  1. Remove bolts (2). Remove plate (3) .



    Illustration 3g00763571

  1. Remove port plate (4) .



    Illustration 4g00763578

  1. Remove barrel assembly (5) .



    Illustration 5g00763935

  1. Put identification marks on piston assemblies (6) in order to indicate the locations of the pistons in the retainer plate (7) and the barrel (8). Remove piston assemblies (6) and retainer plate (7) from barrel (8) as a unit. Separate the piston assemblies from the retainer plate.



    Illustration 6g00763958

  1. Remove guide (9) and pins (10) from barrel (8) .



    Illustration 7g00763585

  1. Remove swashplate (11) .



    Illustration 8g00763590

  1. Remove piston (12), and spring (13) .



    Illustration 9g00763910

  1. Use a 0.25 mm (0.010 inch) feeler gauge to a 0.38 mm (0.015 inch) feeler gauge. Remove ring (14) from the groove between cover (15) and the final drive housing.



    Illustration 10g00763597

  1. Remove cover (16) .



    Illustration 11g00763603

  1. Remove O-ring seal (17) .



    Illustration 12g00763605

  1. Use Tooling (A) in order to remove retaining rings (18) .



    Illustration 13g00763613

  1. Remove gears (19). Remove gear (20) .



    Illustration 14g00763623

  1. Remove shaft (21). Remove bearing (22) .



    Illustration 15g00763684

  1. Remove pivots (23), and lip seal (24) .



    Illustration 16g00764056


    NOTICE

    The thread lock compound that is used on the reamer bolts may cause the reamer bolts to seize during removal.

    The reamer bolts should be slowly removed by hand. Do not use an impact wrench in order to remove the reamer bolts. If the reamer bolts will no longer turn during removal, do not force or complete the removal. Instead, tighten the bolts, then try to loosen them again.


  1. Carefully remove bolts (25). Remove retaining rings (26) .



    Illustration 17g00763700

  1. Use Tooling (B) in order to separate spindle (27) from housing (28) .



    Illustration 18g00764796

  1. Remove flange (29), and bearing (30) .



    Illustration 19g00764176

  1. Remove gear (31) .



    Illustration 20g00764194

  1. Remove shaft assemblies (32), and gear (33) .



    Illustration 21g00764198

  1. Remove bearing cone (35), and bearing cone (38) from shaft (34). Remove bearing (36), and bearing (37) from shaft (34) .



    Illustration 22g00862751

  1. Remove Duo-Cone seal kit (39). Remove pins (40). Remove bearing (41) .



    Illustration 23g00764855

  1. If necessary, remove valve (42). Remove bearing (43) .



    Illustration 24g00764867

  1. Remove plugs (44), and the O-ring seals. Remove springs (45), stoppers (46), and spool (47) .



    Illustration 25g00764880

  1. Remove plugs (48), and the O-ring seals. Remove springs (49), and stoppers (50) .



    Illustration 26g00764899

  1. If necessary, remove plugs (51). Remove plug (52), and the O-ring seal. Remove plug (53) .

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