Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Engine, Cooling and Exhaust > Cooling System > Coolant Pump <--> [Water Pump] > Component Information > Fundamentals and Basics > Initial Preparations > Page 4067
Coolant Pump: Fundamentals and Basics
WATER PUMP REMOVAL TIPS HINTS
FROZEN AND BROKEN BOLTS
Frozen and broken bolts are often a major problem when removing water pumps. Coolant can seep into the bolt holes resulting in corrosion and
Upon removal, any bolt or nut which shows signs of corrosion should be replaced. The threads of the associated bolt hole should be re-tapped or
Inspect the coolant hoses, drive belts, and associated pulleys. Since these components will need to be removed to replace the timing belt it would
Inspect the hoses for the following:
Cracks, especially near the hose clamps.
Swelling, look for areas of the hose that appear unnaturally bulged outwards.
NOTE: This is often caused by improper removal techniques, see Hose Removal in this article.
Oil contamination and soft spots. Oil contamination breaks down the structure of the rubber and significantly weakens the hose.
NOTE: The oil leak should be fixed prior to replacing the hose.
Hard or brittle hoses, as the hoses age the rubber looses its resiliency and becomes brittle. The hoses need to be able to flex to compensate for
If the belt is cracked or chunks of belt material are missing between the cracks, the belt should be replaced.
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