Captiva

Water Pump Cleaning and Inspection

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. Remove the old gasket material from the water pump sealing surfaces.
2. Clean all excess dirt and debris from the water pump housing.

1. Rotate the water pump hub (1). The water pump hub and impeller should turn straight and smoothly. If the hub wobbles, is noisy, or feels rough when rotated, replace the water pump.
2. Inspect the exterior of the water pump for the following:

•	Damage to the water pump hub bolt threads (2) for the water pump pulley

•	Damage to the water pump bolt holes (3)




3. Examine the water pump shaft (1) and the weep hole reservoir (2) in the water pump body for signs of leakage. If coolant leakage is evident, replace the water pump.



4. Inspect the interior of the water pump for the following:

•	Damage to the water pump gasket sealing surface (1)

•	Damage, corrosion or restrictions to the water pump impeller (2)

•	Damage, corrosion or restrictions to the coolant passages (3)

5. Repair or replace the water pump as necessary.