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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 1.0L (L4B L4F L4G LIJ) Or 1.2L (L4H L4K LIF LIH) - Repair Instructions) >> Repair Instructions >> Fuel Injection Pump Shaft Lifter Roller Replacement >> Installation Procedure

Installation Procedure

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  1. GM4967492Courtesy of GENERAL MOTORS COMPANY

    The EN-52443  High Pressure Fuel Pump Alignment Tool has two ends marked with Number 1 (1) and Number 2 (2).

  2. GM5389725Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The camshaft MUST be at the base circle position before the fuel pump is installed.
    • At the base circle position, the EN-52443  High Pressure Fuel Pump Alignment Tool will sit flush with the cylinder head.

    Install the EN-52443  High Pressure Fuel Pump Alignment Tool (2) with the Number 1 (1) on the outside and turn the crankshaft until the camshaft lobe is at the base circle position.

  3. Remove the EN-52443  High Pressure Fuel Pump Alignment Tool (2).
  4. GM5392493Courtesy of GENERAL MOTORS COMPANY

    Lubricate the fuel injection pump shaft lifter roller (1) with engine oil. Adhesives, Fluids, Lubricants, and Sealers

  5. Fuel Injection Pump Shaft Lifter Roller (1) - Install
  6. GM5392499Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump (2) - Install

  7. Inspect for fuel leaks using the following procedure:
    1. Turn ON the ignition with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition with the engine OFF.
    4. Inspect for fuel leaks.