C7 Industrial Engines Disassembly and Assembly – Electronic Unit Injector – Remove

Removal Procedure

Table 1
Required Tools
Tool Part Number Part Description Qty
A 367-3070 Fuel Injector Installer and Removal Tooling 1
B 274-9198 Leg 2
C 1/2 inch drive breaker bar 1

Start By:

  1. Remove the valve mechanism cover. Refer to Disassembly and Assembly, “Valve Mechanism Cover – Remove and Install”.



Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


  1. Drain the coolant, oil, and fuel from the cylinder head. Remove the oil galley plug (1), fuel galley plug (2), and coolant line (3) .

  1. Disconnect harness assembly (4) .


  1. Remove socket head bolts (6) from unit injector (5), and remove rocker shaft bolt (7) .

  1. Install Tooling (A). Use Tooling (A) to remove unit Injector (5) .

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

  1. Remove O-ring seal (10), O-ring seal (11), and O-ring seal (12) from unit injector (5) .


  1. Remove backup ring (8), backup ring (9), and backup ring (13) .
Posted in C7

Leave a Reply

Your email address will not be published. Required fields are marked *