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YOU HAVE TO REMOVE TIMING BELT AND IDLER PULLEY.YOU NEED TO REPLACE TIMING BELT WHEN YOU REPLACE WATER PUMP.TO REPLACE WATER PUMP. DRAIN COOLANT SYSTEM.REMOVE UPPER RADIATOR HOSE.REMOVE TIMING BELT AND IDLER PULLEY.UNBOLT AND REMOVE THE WATER PUMP.CLEAN ANY GASKET MATERIAL OR SEALANT RESIDUE FROM THE WATER PUMP MATING SEALING SURFACES.WHEN INSTALLING NEW WATER PUMP BESURE TO USE A SEALANT ON BOTH SIDES OF WATER PUMP GASKET TO KEEP IT FROM LEAKING COOLANT.TORQUE WATER PUMP BOLTS TO 13 FT LBS IN A TWO STEP CRISSCROSS SEQUENCE.INSTALL THE IDLER PULLEY.TIGHTEN THE MOUNTING BOLT TO 31 FT LBS.INSTALL AND TENSION THE TIMING BELT.INSTALL THE UPPER RADIATOR HOSE.REFILL BLEED THE COOLANT SYSTEM.
Hi. Here's the proceudere on how to replace the water pump of your 97 Chevy Cavalier.
•1 Drain the cooling system. Place a large oil drain container under the drain fitting located on the bottom of the radiator. Turn the drain fitting counterclockwise until fluid is draining from the radiator. Use a pair of pliers to turn the drain fitting if you cannot turn it by hand. Turn the fitting clockwise to tighten it after all of the fluid has drained from the radiator.
•2 Remove the cooling fan. Disconnect the electrical connection from the fan motor. Remove the bolts holding the fan assembly to the radiator support with a ratchet wrench. Pull the fan assembly up from the engine compartment and remove it.
•3 Remove the serpentine belt. Place a wrench over the belt tensioner and rotate the tensioner to release the tension on the belt. Pull the belt off the pulleys and remove it from the vehicle.
•4 Remove the water pump pulley. Place a screwdriver behind the pulley to lock it in place while removing the pulley mounting bolts with a ratchet wrench.
•5 Disconnect the coolant hoses running to the water pump.
•6 Remove the water pump mounting bolts with a ratchet wrench or wrench and remove the water pump from the vehicle.
•7 Clean the mating surfaces of the engine block and new water pump with a towel saturated with lacquer thinner.
•8 Apply a thin layer of RTV sealer to both sides of the new water pump gasket and place the gasket on the new water pump.
•9 Place the water pump against the engine block and finger tighten the water pump mounting bolts to hold the pump in place. Tighten the bolts with a torque wrench to 18 foot-pounds.
•10 Place the pulley on the water pump and install the water pump pulley mounting bolts with a ratchet wrench.
•11 Attach any hoses previously disconnected from the water pump.
•12 Install the serpentine belt. Route the belt over the pulleys according to the routing diagram in the engine compartment. Place a wrench over the belt tensioner and rotate the tensioner to tighten the tension on the belt.
•13 Install the cooling fan. Gently lower the cooling fan in position and install the mounting bolts attaching the fan assembly to the radiator support with a ratchet wrench. Attach the electrical connection to the fan motor.
•14 Refill the cooling system to the appropriate level, start the vehicle and check for leaks around the water pump.
the water pump is in the middle of the engine the pulley inthe center is the pump you need to take the radiator and fan off loosen the belt take the pump off then replace it with new one with a gasket already set slip it back on the engine
Partially drain the cooling system into a suitable container.
Remove the drive belt guard.
Loosen the water pump pulley bolts before removing the drive belt. This should help keep the pulley from turning as the bolts are loosened.
Remove the drive belt. Please see Section 1.
Remove the water pump pulley bolts and remove the pulley.
Remove the water pump bolts and separate the pump from the engine front cover.
Exploded view of the water pump and front cover arrangement—3.1L and 3.4L (VIN E) engines
Clean all parts well. Use care when scraping gasket material from the front cover and the pump. Do not gouge aluminum parts. Clean the bolt threads well. The torque specification is low and if the bolt threads are dirty, an accurate torque is not possible and leaks are likely to develop.
Using a new gasket, install the water pump to the front cover. Install the cleaned and lightly lubricated water pump bolts. Torque to 89 inch lbs. (10 Nm).
Install the water pump pulley and bolts and torque to 18 ft. lbs. (25 Nm).
Install the remaining components in the reverse order of the removal process. When refilling the cooling system, use the proper mix of DEX-COOL® and water. Check for leaks.
OK, disconnect neg battery cable, drain cooling system, remove splash shield under right front fender for easy access to water pump bolts, loosen clamps and disconnect hoses from pump, remove drive belt, remove water pump pulley bolts, remove pulley (tip: loosen bolts on pulley before removing belt), remove water pump bolts (5) , separate from the front cover, clean the bolt threads and the threaded holes in the front cover to remove any corrosion and sealant, remove and discard o ring and clean mating surfaces, careful not to gouge or scratch mating surfaces, install new o ring into the groove, install the pump to the front cover and tighten to 105 INCH pounds, pulley bolts are 21 FOOT pounds.Good Luck! countrycurt0