LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 638 (Engine Mechanical - 4.0L (Unit Repair)) >> Repair Instructions >> Water Pump Cleaning and Inspection

Water Pump Cleaning and Inspection

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Do not immerse the water pump in solvent. The solvent may enter the water pump's permanently lubricated bearings and cause premature bearing failure.
  1. Rotate the water pump. The water pump should turn straight and smoothly. If the hub wobbles, is noisy or feels "lumpy" when turned, replace the water pump.
  2. Inspect the water crossover for signs of leakage. If coolant leakage is evident, inspect and replace the O-ring seal in the crossover housing.
  3. Examine the water pump shaft on the pulley side of the pump. If coolant leakage is evident, replace the water pump.
    Fig 1: Identifying Water Pump
    G01817082Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals