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TK711, TK721, TK722 and TK732 Track Feller Bunchers Machine Systems Caterpillar


Travel Motor - Assemble

Usage:

TK711 101

Assembly Procedure

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Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-7563     Hex Wrench     1    
C     6V-3821     Bolt     1    
E     136-1452     Retaining Ring Pliers     1    
F     1P-0510     Driver Group     1    
G     149-4935     Measuring Tool     1    

Note: Replace all O-ring seals and gaskets. Apply a light film of hydraulic oil to all components before assembly.

Note: Cleanliness is an important factor. Before assembly, clean all parts 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.

Note: The assembly procedure begins with the head. The assembly procedure for the body follows.

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    Illustration 1g00841884

  1. Use Tooling (A) in order to install shuttle valve (28) .
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    Illustration 2g00841883

  1. Install plug (27) .
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    Illustration 3g00841878

  1. Assemble spool (23) , spring (24) , seat (25) , and cap (26) .
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    Illustration 4g00841875

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    ------ 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.

    ----------------------

  1. Install valve assembly (22) .

  1. Install the spool, the spring, the seat, and the cap on the other side of the head.
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    Illustration 5g00841869

  1. Assemble poppet (21) , spring (20) and valve assembly (19) .
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    Illustration 6g00841860

  1. Install valve assembly (18) .

  1. Install the poppet, the spring, and the valve assembly on the other side of the head.
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    Illustration 7g00841858

  1. Assemble seat (17) , spring (16) , and cap (15) .
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    Illustration 8g00841855

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    ------ 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.

    ----------------------

  1. Install valve assembly (14) .
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    Illustration 9g00841850

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    ------ 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.

    ----------------------

  1. Install spool (13) , spacer (12) , and spring (11) .

  1. Install cap (10) . Torque the cap to 250 N·m (185 lb ft).
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    Illustration 10g00841845

  1. Install piston (9) and plug (8) .
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    Illustration 11g00841840

  1. Install new O-ring seals (7) on both relief valves.
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    Illustration 12g00841826

  1. Install relief valves (6) . Torque each relief valve to 100 N·m (75 lb ft).
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    Illustration 13g00841824

  1. Install port plate (4) and pin (5) .

    Note: Use grease in order to hold port plate (4) in position.

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    Illustration 14g00842015

  1. Use Tooling (F) and a soft hammer in order to install seal (35) .
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    Illustration 15g01288684

    Note: Raise the temperature of bearing (47) and bearing (49) . Lower the temperature of shaft (46) .

  1. Install bearing (48) onto shaft (46) .

    Note: The preload for the bearings is adjusted at the factory. Install the bearings in sets.

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    Illustration 16g01288688

  1. Install shim (48) onto shaft (46) .
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    Illustration 17g01288722

  1. Install bearing (47) . Install shim (45) , and retaining ring (44) .
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    Illustration 18g00841932

  1. Install center pin (41) , pistons (40) and retainer (39) . Install screws (38) .

  1. The following steps are necessary in order to select the thickness of shim (43) . The thickness of the shim determines the lift-off limitation.
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      Illustration 19g01288723

    1. Use Tooling (G) in order to determine the limit of separation.
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      Illustration 20g00717767

    1. Install the three balls into the plate.
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      Illustration 21g01288724

    1. Install spring (42) and Tooling (G) into the center pin hole in barrel (37) .
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      Illustration 22g00841931

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      ------ 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.

      ----------------------

    1. Install Tooling (C) into barrel (37) .
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      Illustration 23g00842029

    1. Raise the housing to 80 °C (176 °F). Place the housing on suitable blocks.
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      Illustration 24g00842031

    1. Lower the rotary assembly into the housing. Install a new seal (29) .
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      Illustration 25g00841889

    1. Install shim (33) .

    1. Use Tooling (E) in order to install retaining ring (34) .
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      Illustration 26g00841898

      Note: Use the recorded distance from the locknut to the end of the set screw for installation purposes.

    1. Install locknuts (31) and screws (32) .
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      Illustration 27g00841816

    1. Install head (3) on the housing. Turn the shaft and tighten bolts (2) at the same time.

    1. Remove bolts (2) . Remove head (3) .
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      Illustration 28g00842041

    1. Remove Tooling (C) . Remove barrel (37) .
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      Illustration 29g01288727

    1. Remove Tooling (G) from barrel (37) .
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      Illustration 30g01288731

    1. Measure the thickness of Tooling (G) , Dimension (Z) . Subtract 0.3 ± 0.1 mm (.012 ± .004 inch) from Dimension (Z) . Use a shim of this dimension in order to set the correct lift off limitation.

      Example (Z) = 5.00 mm (0.197 inch) - 0.3 ± 0.1 mm (.012 ± .004 inch) = 4.70 mm ± 0.10 (0.185 inch ± 0.004 inch).

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      Illustration 31g00842044

    1. Install shim (43) that was determined in Step 22.n into barrel (37) . Use a small amount of grease in order to hold the shim in the barrel .
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    Illustration 32g00842048

  1. Install barrel (37) .
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    Illustration 33g00841816

  1. Install head (3) and bolts (2) . Tighten to a torque of 87 N·m (64.2 lb ft).
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    Illustration 34g00841777

  1. Install plug (1) .

End By: Install the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Install".

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