Chevrolet Equinox Service Manual: Water Pump Cleaning and Inspection Engine Cooling Coolant Pump
Cleaning Procedure
Caution:Do not immerse the water pump in solvent. The solvent mayenter the water pump's permanently lubricated bearings and causepremature bearing failure.
Remove the old gasket material from the water pump sealingsurfaces.Clean all excess dirt and debris from the water pumphousing.Inspection Procedure
Rotate the water pump hub-(1). The water pump huband impeller should turn straight and smoothly. If the hub wobbles,is noisy, or feels rough when rotated, replace the waterpump.Inspect the exterior of the water pump for thefollowing:Damage to the water pump hub bolt threads-(2) forthe water pump pulleyDamage to the water pump bolt holes-(3)
Examine the water pump shaft-(1) and the weep holereservoir-(2) in the water pump body for signs ofleakage. If coolant leakage is evident, replace the waterpump.
Inspect the interior of the water pump for thefollowing:Damage to the water pump gasket sealingsurface-(1)Damage, corrosion or restrictions to the water pumpimpeller-(2)Damage, corrosion or restrictions to the coolantpassages-(3)Repair or replace the water pump as necessary.
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Caution:The vehicle does not need an elaborate break-in. But it will perform better in thelong run if you follow these guidelines:Do not drive at any one constant speed, fast or slow, for the first 80 ...
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Cleaning ProcedureClean all the following components with solvent:Crankshaft sprocketPrimary timing drive chainPrimary timing drive chain shoePrimary timing drive chain guidesPrimary timing drive chai ...
Other materials:
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Draining ProcedureNote:Drain and measure as much of the refrigerant oil as possiblefrom the removed compressor.Remove the compressor crankcase oil drain plug and drain thecrankcase into a clean, graduated container.Drain the oil from both the suction and discharge ports ofthe removed compressor-(1) ...
