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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Engine Mechanical - 3.7L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm and Valve Lash Adjuster Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the camshaft cover. Refer to Camshaft Cover Replacement .
  2. Rotate the crankshaft until the affected cylinder valve is fully open (cam lobe fully depressing the spring).
    3. Fig 1: Compressing Valve Spring
    GM1788074Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Engine design and packaging does not allow all cylinder locations to use both fasteners for holding the tool to the cylinder head. One fastener is sufficient in these locations.
  3. Install the EN-47945  on the engine cylinder head using either one or two of the supplied fasteners installed in the coil fastener hole.
    4. IMPORTANT: DO NOT rotate the engine with the tool installed. It is possible to damage the valves if they contact the piston. Rotate the engine enough to come back to the base circle of the cam.
  4. Rotate the engine clockwise enough to ensure the cam is on the base circle (spring will stay compressed by the tool).

    This will allow the lash adjuster and rocker to be removed.

  5. Remove the valve rocker arm and valve lash adjuster.
  6. Clean and inspect the valve rocker arm and valve lash adjuster. Refer to Valve Rocker Arm and Valve Lash Adjuster Cleaning and Inspection .
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