C9 Urban Transit Bus Engine Unit Injector - Remove Caterpillar


Unit Injector - Remove
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C9 Urban Transit Bus Engine [RENR7559]
FUEL SYSTEM
PUMP GP-FUEL INJECTION
C9 Urban Transit Bus Engine Unit Injector - Remove
C9 Urban Transit Bus Engine Unit Injector - Install
1.1. Removal Procedure

Removal Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-7587     Pry Bar     1    
B     147-6456     Wedge Removal Tool     1    

Start By:

  1. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install".


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


Note: The valve bridges may need to be removed in order to remove the unit injectors. If the valve bridges are removed, the valve lash will need to be set during installation. Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".




    Illustration 1g01137288



    Illustration 2g01137290

  1. Use Tooling (B) or a small flat head screwdriver to disconnect harness assembly (2) .

  1. Remove socket head bolts (3) .

  1. Place Tooling (A) at location (C) . Carefully remove unit injector (1) from the cylinder head.

    Note: Do not use a wire brush on the tip of the injector. Damage to the injector will occur.




    Illustration 3g01137291

  1. Remove O-ring seals (6) , (7) , and (8) from unit injector (1) . Remove backup rings (4) , (5) , and (9) from unit injector (1) .

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