308C CR Excavator Hydraulic System – Swing Motor – Assemble

Assembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1861     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 trouble later. 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 clean parts covered and protected at all times.

Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.

    Illustration 1 g00876700

    Typical Example

  1. Raise the temperature of bearing (50) and install shaft (38) in the bearing.

    Illustration 2 g00875733

  1. Install seal (49) in housing (28) .

    Illustration 3 g00875590

    Note: Install plates (48) in the order that was noted during the disassembly procedure. Refer to Disassembly and Assembly, “Swing Motor – Disassemble”.

  1. Install plates (48) in housing (28) .

    Illustration 4 g00875577

  1. Install seal (47) on collar (46) .

    Illustration 5 g00875553

  1. Install collar (46) in housing (28) .

    Illustration 6 g00875430

  1. Install O-ring seal (45) and seal (44) on piston (43) .

    Illustration 7 g00876310

  1. Install piston (43) in housing (28). Install plug (28A). Tighten plug (28A) to a torque of 15.70 ± .78 N·m (138.96 ± 6.90 lb in).

    ------ WARNING! ------

    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.


    Illustration 8 g00875331

    Illustration 9 g00875346

  1. Install washer (42), spring (41), and spacer (40) in barrel (33) .
  1. Use a suitable press to compress spring (41) and use Tooling (A) to install retaining ring (39) in barrel (33) .

    Illustration 10 g00875181

  1. Install pins (34) and cone (35) .
  1. Install pistons (36) in the same holes in barrel (33) that were noted during the disassembly procedure.
  1. Install plate (37) and shaft (38) in barrel (33) .