GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1998 🢒 S/T Isuzu - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Balance Shaft Replacement

Removal Procedure

    Object Number: 72749 Size: SH
  1. Remove the radiator.

    2. Refer to Radiator Replacement in Engine Cooling.

  2. Remove the a/c condenser, if equipped.

    3. Refer to Condenser Replacement in HVAC.


    Object Number: 188000 Size: SH
  3. Remove the engine front cover and the crankshaft position reluctor ring.

    4. Refer to Engine Front Cover Replacement .


    Object Number: 9847 Size: SH
  4. Loosen the balance shaft driven gear bolt using the following steps:
    5. 4.1. In order to hold the camshaft sprocket, use a wrench on one of the bolts.
    4.2. Loosen, then remove the balance shaft bolt and the washer.
    4.3. Remove the wrench from the camshaft sprocket.
  5. Remove the timing chain and sprockets.

    6. Refer to Timing Chain and Sprocket Replacement .


    Object Number: 5135 Size: SH
  6. Remove the balance shaft drive and driven gears.
  7. Remove the valve lifter retainer.

    8. Refer to Valve Lifter Removal .


    Object Number: 188031 Size: SH
  8. Remove the bolt and the balance shaft retainer.

    9. Object Number: 5139 Size: SH

    Important: The balance shaft and the front bearing are serviced only as a package. Do not remove the bearing from the balance shaft.

  9. Tap on the balance shaft using a soft-faced hammer in order to remove the balance shaft.

    10. Refer to Balance Shaft Removal .

  10. Clean all sealing surfaces.

    11. Refer to Balance Shaft Clean and Inspect .

Installation Procedure

Tools Required

    • J 36660-A Torque/ Angle Meter
    • J 36996 Balance Shaft Installer
    • J 8092 Driver Handle

    Object Number: 5141 Size: SH
  1. Use the J 8092 and the J 36660-A in order to install the balance shaft.

    2. Refer to Balance Shaft Installation .


    Object Number: 5137 Size: SH
  2. Install the balance shaft retainer and the bolt.

    3. Refer to Balance Shaft Installation .


    Object Number: 5136 Size: SH
  3. Install the balance shaft driven gear and the bolt.

    4. Refer to Balance Shaft Installation .


    Object Number: 5144 Size: SH
  4. Install the drive gear onto the camshaft.
    5. • Ensure that the timing marks on the balance shaft drive gears align.
    • The number four cylinder should be at the top dead center (TDC) of it's compression stroke.
    • The distributor rotor should face the number four terminal on the distributor cap.
  5. Install the valve lifter retainer.

    6. Refer to Valve Lifter Installation .


    Object Number: 5164 Size: SH
  6. Install the timing chain and the camshaft sprocket.

    7. Refer to Timing Chain and Sprocket Replacement .


    Object Number: 72749 Size: SH
  7. Install the a/c condenser, if equipped.

    8. Refer to Condenser Replacement in HVAC.

  8. Install the radiator.

    9. Refer to Radiator Replacement in Engine Cooling.