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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 Stem Oil Seal and Valve Spring 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.
    Fig 1: View Of Service Slot Plug
    GM1302113Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the service slot plug.
    3. Fig 2: Identifying EN 46547
    GM1386661Courtesy of GENERAL MOTORS CORP.
  3. Install the EN 46547  (1) into the flywheel teeth.
  4. Lower the vehicle.
  5. Remove the valve rocker arms. Refer to Valve Rocker Arm and Valve Lash Adjuster Replacement .
  6. Remove the spark plugs. Refer to Spark Plug Replacement .
    7. Fig 3: View Of J 44228 Base Plate
    GM760725Courtesy of GENERAL MOTORS CORP.
  7. Install the base plate of the J-44228-A  over the spark plug hole of the cylinder to be serviced.
  8. Install the J 39313  in the spark plug hole.
  9. Apply constant air pressure to the J 39313  in order to keep the valve closed.
  10. Install the arm and swivel nut of the J-44228-A  over the stud corresponding to the valve to be serviced.
    11. CAUTION: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
  11. Tighten the swivel nut of the J-44228-A  down only enough to allow access for removal of the valve locks.
    12. Fig 4: View Of Valve Keys
    GM858296Courtesy of GENERAL MOTORS CORP.
  12. Remove the valve locks. A magnet is the most suitable tool for this activity.
  13. Loosen the swivel nut of the J-44228-A  and swing the arm away from the valve spring retainer.
    14. Fig 5: View Of Valve Springs & Retainers
    GM858298Courtesy of GENERAL MOTORS CORP.
  14. Remove the valve spring retainer and valve spring.
    15. Fig 6: View Of Valve Stem Seals And Seal Tool
    GM858302Courtesy of GENERAL MOTORS CORP.
  15. Use the J 38820  in order to grip the seal. Remove the seal by exerting a twisting, pulling motion.

    Discard the old valve stem seal.

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