446D Backhoe Loader Machine Systems Caterpillar


Pilot Valve (Stabilizer) - Assemble

Usage:

446D DBL

Assembly Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
1U-6396  O-Ring Assembly Compound 

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 later trouble. 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 cleaned parts covered and protected at all times.

Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. Use Tooling (A) during the assembly procedure.

Note: Apply a light film of hydraulic oil to all components before assembly.



    Illustration 1g00768399

  1. Install O-ring seals (16) into the valve body.


    Illustration 2g00768396

  2. Install bolts and nuts (15).


    Illustration 3g00768393

    ------ 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.


  3. Install spring (11), regulator (12), O-ring seal (13), and plunger (14).

  4. Repeat Step 3 in order to complete installation of the other ports.

    Note: The plungers that are located at the front of the valve body have a pin.



    Illustration 4g00768388

  5. Install lever (10).


    Illustration 5g00768385

  6. Install retaining pin (9).


    Illustration 6g00768383

  7. Install plate (8). Install screws (7) and the washers.

    Note: Screws should be positioned at the top of the slots which are located in the plate.

  8. Repeat Step 5 through Step 7 in order to install the other lever kit.


    Illustration 7g00768379

  9. Install lever kit (4) and plate (5) on the valve body.

  10. Repeat Step 9 for the other lever kit.


    Illustration 8g00768370

  11. Install screws (3) in order to retain the lever kits.


    Illustration 9g00768366

  12. Install bracket (2) onto the pilot valve.

  13. Install bolts (1) and the washers into bracket (2).

  14. Repeat Step 13 for the other side of bracket (2).

End By:

  1. Install the pilot valve (stabilizer) in the cab. Refer to Disassembly and Assembly, "Pilot Valve (Stabilizer) - Install".

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