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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Repair Instructions >> Water Pump Replacement (4.3 L) >> Installation Procedure

Installation Procedure

  1. Install the water pump gaskets.
    Fig 1: Water Pump Gaskets (4.3L)
    G01661462Courtesy of GENERAL MOTORS CORP.
  2. Install the water pump to the engine.
    Fig 2: Water Pump (4.3L)
    G01661463Courtesy of GENERAL MOTORS CORP.
  3. Apply a sealer (GM P/N 12346004) to the bolt threads.
    NOTE: Refer to FASTENER NOTICE .
  4. Install the water pump mounting bolts.

    Tighten 

    Tighten the mounting bolts to 41 N.m (30 lb ft).

    Fig 3: Water Pump Mounting Bolts (4.3L)
    G01661464Courtesy of GENERAL MOTORS CORP.
  5. Install the radiator outlet hose to the water pump.
    Fig 4: Radiator Outlet Hose (4.3L)
    G01661465Courtesy of GENERAL MOTORS CORP.
  6. Install the water pump pulley.
  7. Install the water pump pulley bolts.

    Tighten 

    Tighten the water pump pulley bolts to 25 N.m (18 lb ft).

    8. Fig 5: Water Pump Pulley & Bolts (4.3L)
    G01661466Courtesy of GENERAL MOTORS CORP.
  8. Install the drive belt. Refer to DRIVE BELT REPLACEMENT .
  9. Install the fan clutch assembly. Refer to Fan Clutch Replacement .
  10. Fill the radiator cooling system. Refer to Draining and Filling Cooling System .
  11. Inspect the cooling system for leaks.
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