14H Motor Grader Machine Systems Air Control Valve (Service Brake) - Remove Caterpillar


Air Control Valve (Service Brake) - Remove
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1.1. Removal Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
ZZ  9U-7073  Cap 
9U-7072 Cap 
9U-7069 Cap  
9U-7067 Cap 

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.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.

  1. Drain the air tanks. Refer to Operation and Maintenance Manual, "Air Tank Moisture and Sediment - Drain" for the correct procedure.


    Illustration 1g00929484

  2. Remove three screws (1) from cover (2). Position cover (2) out of the way.


    Illustration 2g00929488

  3. Disconnect hose assemblies (3).


    Illustration 3g00929489

  4. Disconnect hose assemblies (4).


    Illustration 4g00929491

  5. Disconnect hose assemblies (5). Disconnect harness assemblies (6).


    Illustration 5g00929492

  6. Remove spring (7). Remove cotter pin (8) and pin (9).

  7. Remove bolts (12). Remove air control valve (10).


    Illustration 6g00929510


    Illustration 7g00929513

  8. Remove switches (13). Remove fittings (14).


    Illustration 8g00929517

  9. Remove bolts (15). Remove bracket (12) and bracket (11).

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