COVER AS 3929766 - Caterpillar

Removal Procedure (Type 1)
Start By:
Remove the engine oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Intermittent leakage of a small amount of coolant from the weep hole is not an indication of water pump seal failure. Seepage is normal to ensure proper lubrication of the face of the water pump seal. Replace the water pump if excessive leakage is observed from the weep hole in the water pump housing.
Illustration 1 g00569536
Remove bolts (1) and elbow (2). Remove the gasket and the O-ring seal from elbow (2) .
Remove bolts (3) and cover (4). Remove the O-ring seal from cover (4) .
Illustration 2 g00569688
Remove bolts (5) from the front housing. Remove the water pump.
Illustration 3 g00499380
Remove O-ring seal (6) from the water pump.Removal Procedure (Type 2)
Start By:
Remove the engine oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Intermittent leakage of a small amount of coolant from the weep hole is not an indication of water pump seal failure. Seepage is normal to ensure proper lubrication of the face of the water pump seal. Replace the water pump if excessive leakage is observed from the weep hole in the water pump housing.
Remove the alternator and the alternator mounting bracket from the engine, if necessary.
Illustration 4 g00578439
Typical example
Loosen hose clamp (1) .
Remove bolts (3) and water pump cover (2) .
Remove the O-ring seal between water pump cover (2) and water pump (4) .
Illustration 5 g00578441
Remove bolts (5) and water pump (4) .
Illustration 6 g00499380
Remove O-ring seal (6) from the water pump.