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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1618 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Balance Shaft Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the radiator. Refer to RADIATOR REPLACEMENT .
  2. Remove the air conditioning (A/C) condenser. Refer to CONDENSER REPLACEMENT .
  3. Remove the lifter pushrod guide. Refer to Valve Lifter Replacement .
  4. Remove the timing chain and camshaft sprocket. Refer to Timing Chain and Sprockets Replacement .
  5. Remove the balance shaft drive gear.
    Fig 1: Balance Shaft Drive Gear
    G02105955Courtesy of GENERAL MOTORS CORP.
  6. Remove the balance shaft driven gear bolt.
    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.
    Fig 2: Balance Shaft Driven Gear & Bolt
    G02105956Courtesy of GENERAL MOTORS CORP.
  8. Remove the balance shaft retainer bolts and retainer.
    Fig 3: Balance Shaft Retainer & Bolts
    G02105957Courtesy 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, if necessary. Refer to Balance Shaft Cleaning and Inspection .
    Fig 4: Removing Balance Shaft From Engine Block
    G02105958Courtesy of GENERAL MOTORS CORP.
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