D9T Track-Type Tractor Hydraulic System – Steering Motor – Disassemble

Disassembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1861     Retaining Ring Pliers     1    
B     8T-0266     Bolt     1    
C     5P-4808     Cap     2    
5F-7369 Puller Leg     2    
3H-0465 Push-Puller Plate     4    
1B-4207 Full Nut     2    
4K-0367 Full Nut     1    
1U-9895 Crossblock     1    
5/8 X 11 X 16 Rod     1    
D     1P-1860     Retaining Ring Pliers     1    
E     8H-0663     Bearing Puller     1    

Start By:

  1. Remove the steering motor. Refer to Disassembly and Assembly, “Steering Motor – Remove”.


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: 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.

    Illustration 1 g01069806

  1. Mark the head and the housing for proper alignment during reassembly. Remove bolts (1) from head (2) .

    Illustration 2 g00900341

  1. Remove O-ring seal (3) .
  1. Mark the location of valve group (4) .
  1. Remove valve group (4) .

    Illustration 3 g00903326

  1. Remove disc (5) from valve group (4) .

    Illustration 4 g00900338

  1. Remove pins (6) from valve group (4) .

    Illustration 5 g00900337

    ------ 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 springs (7) from valve group (4) .

    Illustration 6 g00900336

  1. Remove spring retainer (8) .
  1. Remove center pin (9) .

    Illustration 7 g00900335

  1. Install Tooling (B) .

    Illustration 8 g01069802

  1. Remove bolts (9A) and speed sensor (9B) .

    Illustration 9 g00900334

  1. Use Tooling (A) in order to remove retaining ring (10) .

    Illustration 10 g00900333

  1. Remove cover (11) .
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