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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.3L (On-Vehicle) >> Repair Instructions >> Balance Shaft Replacement >> Removal Procedure

Removal Procedure

  1. Remove the radiator. Refer to RADIATOR REPLACEMENT (2.2 L) or RADIATOR REPLACEMENT (4.3 L) .
  2. Remove the A/C condenser. Refer to CONDENSER .
  3. Remove the valve lifter pushrod guide. Refer to Valve Lifter Replacement .
  4. Remove the timing chain and camshaft sprockets. Refer to Timing Chain and Sprockets Replacement .
  5. Remove the balance shaft drive gear.
    Fig 1: Balance Shaft Drive Gear
    G01661208Courtesy of GENERAL MOTORS CORP.

    Important:  The balance shaft drive and balance shaft driven gears are serviced as a set. The set includes the balance shaft driven gear bolt.

  6. Remove the balance shaft driven gear bolt from the balance shaft.
    1. 6.1. Use a wrench in order to secure the balance shaft.

      Place the wrench onto the balance shaft near to the balance shaft front bearing.

    2. 6.2. Remove the balance shaft bolt.
    3. 6.3. Remove the wrench from the balance shaft.
  7. Remove the balance shaft driven gear from the balance shaft.
    Fig 2: Balance Shaft Driven Gear & Bolt
    G01661209Courtesy of GENERAL MOTORS CORP.
  8. Remove the bolts and the balance shaft retainer.
    Fig 3: Balance Shaft Retainer & Bolts
    G01661210Courtesy of GENERAL MOTORS CORP.

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

  9. Use a soft-faced hammer in order to remove the balance shaft from the engine block.
  10. Clean and inspect the balance shaft. Refer to BALANCE SHAFT CLEANING AND INSPECTION .
    Fig 4: Removing Balance Shaft Using Soft-Faced Hammer
    G01661211Courtesy of GENERAL MOTORS CORP.
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