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Water pump leaking.

(1999 Saturn SL)
in Mc David, FL on March 12, 2011
started running hot . found water leaking.How hard is it to replace a waterpump
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Popular Answer
on March 12, 2011
To me it's an easy process since I know how to do it and have the correct tools.
Unfortunately I can't judge someone's mechanical skills through the internet.
It can be done in about 2 hours in a shop.
Here is what you need to do:

Removal
CAUTION: DO NOT REMOVE CAP OR OPEN COOLING SYSTEM DRAINS FROM A HOT SYSTEM. ALLOW SYSTEM TO COOL FIRST.
1. Drain coolant. Open the radiator drain plug and engine drain plug., and allow the coolant to drain into a suitable container. A two gallon container is required.
2. Remove accessory drive belt.
CAUTION: BE SURE THE VEHICLE IS SECURELY SUPPORTED. TO HELP AVOID PERSONAL INJURY WHEN A VEHICLE IS ON A HOIST, PROVIDE ADDITIONAL SUPPORT FOR THE VEHICLE ON THE OPPOSITE END FROM WHICH COMPONENTS ARE BEING REMOVED.
3. Jack or raise vehicle on a hoist.
4. Remove the right hand tire and inner wheel well splash shield.
IMPORTANT: The A/C compressor mounting bolts can also be removed and the compressor laid aside to access the water pump if the pump is accessed from the top. Do not discharge the A/C system.
NOTICE: Spray the water pump hub with a penetrating oil to loosen any rust that may prevent the pulley from being easily removed. If the pulley is pried off the hub and bent, it must be replaced to prevent accessory drive belt failures.
5. Remove water pump pulley bolts and allow pulley to hang freely on pump hub.
IMPORTANT: A 25.4 mm (1 in.) block of wood or hammer handle can be used as a wedge between the crankshaft and water pump pulleys to hold the water pump pulley from turning when loosening the pulley bolts.
IMPORTANT: Pulley bolts are removed to allow pulley to be moved outward and allow access to water pump flange bolts. Pulley and pump are then removed as an assembly.
6. Remove the six water pump flange attachment bolts.
7. Remove water pump and pulley assembly.
NOTICE: If it is difficult to remove the water pump, tap it with a gasket scraper under the flange. Use extreme care and do not damage or scratch the machined aluminum cylinder block, surface leaks will result.
8. Remove any gasket material from cylinder block and water pump flange.

Zee
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