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Removing water pump on 1994 buick roadmaster limited

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1 Disconnect your car's negative battery cable.
2 Drain the engine coolant, placing a container under the radiator and removing the radiator drain plug. You might need to use pliers to remove the plug.
3 Loosen the bolts on the water pump pulley with a wrench, then loosen the drivebelt tensioner with your wrench or ratchet and remove the drive belt.
4 Remove the pulley bolts the rest of the way. They should be loose enough to remove by hand.
5 Remove the water pump pulley.
6 Unbolt and remove the water pump from the engine using your wrench.
7 Scrape off all traces of gasket material from the engine's mounting surface with a gasket scraper and clean the surface with acetone. Clean off any traces of sealant and corrosion from the bolts.

1 Apply a thin layer of RTV sealant to both sides of the new water pump gasket and connect the gasket to the pump. Place two bolts in their mounting holes on the pump and install the pump on the engine.
2 Thread all the bolts onto the pump finger tight, then tighten the short bolts with your wrench in quarter-turn increments to 99-132 inch pounds. Tighten the long bolts to 22-29 foot pounds in the same manner.
3 Slide the water pump pulley in place and thread the bolts onto it as tight as possible without the pulley turning.
4 Reconnect the drive belt using the ratchet on the tensioner. Look for a diagram printed on the radiator to show you the exact path the belt needs to follow.
5 Tighten the water pump pulley bolts to 108-132 foot pounds.
6 Refill the radiator with a fresh mix of water and coolant if the old coolant was dirty.
7 Reconnect the battery cable.

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Posted on Apr 11, 2011


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