D9T Track-Type Tractor Hydraulic System – Transmission Hydraulic Control Valve – Disassemble

Disassembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1853     Retaining Ring Pliers     1    

Start By:

  1. Remove the transmission hydraulic control valve. Refer to Disassembly and Assembly, “Transmission Hydraulic Control Valve – Remove”.



    Illustration 1 g01099697

  1. Remove harness assembly (1) .



    Illustration 2 g01099782

  1. Remove bolts (2). Remove valve assemblies (3) .



    Illustration 3 g01099823

  1. Remove nut (6) , washers (5) and coil assembly (4) .
  1. Repeat Step 2 and Step 3 for the other valve assemblies.



    Illustration 4 g01099836


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

    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.

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


  1. Remove cartridge assembly (9), spool (8), and spring (7) .
  1. Repeat Step 5 for the other valve assemblies.



    Illustration 5 g01099847

  1. Remove O-ring seals (10) from cartridge assembly (9) .
  1. Repeat Step 7 for the other valve assemblies.



    Illustration 6 g01099867





    Illustration 7 g01099899

  1. Remove fitting (11). Remove O-ring seal (12) .
  1. Repeat Step 9 for the other fittings.



    Illustration 8 g01099910

  1. Remove bolts (15) and cover (14).
  1. Remove bolts (13) and eyebolt (17) from plate (16) .



    Illustration 9 g01115703

  1. Measure the height of bolt (19) from a flat surface. This will be Dimension (X). Make a note of the measurement. Loosen nut (18) and remove bolt (19) .



    Illustration 10 g01099984

  1. Remove plug (20) .
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