There are two distinctly antithetic bathe pumps for the 1998 Buick Royal, depending on engine magnitude. The 3.1- and 3.4-liter engines utilize the twin moisten pump, nevertheless the 3.5-liter is changed. Both hose pumps are mounted on aluminium timing chain covers that are softer than their steel counterparts and easily gouged or scratched. This must be avoided as yet as potential to eliminate any opportunity of leaks when beguiling the H2O pump off a 1998 Buick Royal.
Instructions
Removal for 3.1- and 3.4-Liter Engines
1. Disconnect the contravening battery terminal using a wrench. Accommodation the extract pan under the radiator and carefully expansive the petcock with pliers. Partially extract the radiator to confirm that the coolant is below the comparable of the imbue pump. Speedy the petcock.
2. Loosen the four bolts in the douse pump pulley using a wrench. Remove the cestuses embrace bolts using a socket and lift off the incorporate. Using a ratchet in the gap in the cummerbund tensioner, shift the tensioner elsewhere from the band to remove the tension. Lift the cummerbund off the water pump pulley. Remove the drool pump pulley bolts and the pulley.
3. Remove the bolts in the H2O pump using a socket. Install the idler pulley and tighten the bolt to 25 foot-pounds. Move the tensioner away from the belt using the ratchet and install the belt over the water pump pulley and idler. Torque the water pump pulley bolts to 124 inch-pounds.11. City a petty oil on the threads. Handle the oil dipstick oil for lubrication. It doesn't share all the more.
4. Situate some silicone sealant on the engine mating side of the pump and levy the gasket over the silicone sealant. Apartment some sealant approximately the mating surface on the timing chain comprehend also.
5. Install the just out douse pump and torque the bolts to 89 inch-pounds. Install the water pump pulley and nuts on the studs. Don't attempt to torque them until the belt is installed.
6. Move the tensioner as before and install the belt on the pulley. Install the belt cover. Torque the pulley nuts to 18 foot-pounds. Reconnect the negative battery terminal. Fill the radiator with a 50-50 mix of antifreeze to water.
Removal for the 3.5-Liter Engine
7. Partially drain the radiator and collect the coolant to avoid spillage as the water pump is removed. Disconnect the negative terminal on the battery. Loosen the water pump pulley bolts using a socket. Use a ratchet to move the tensioner pulley away from the belt and lift the belt off.
8. Remove the bolts in the water pump and the pulley. Remove the bolt in the idler pulley and remove the pulley. Remove all the bolts in the water pump housing using a socket. Pull the water pump free of the timing chain cover. Clean the mating surface on the timing chain cover.
9. Place a thin, continuous bead of silicone sealant around the mating surface of the new water pump. Install the new gasket to the mating surface of the water pump. Place a bead of silicone around the engine-mating surface. Install the water pump and torque the bolts to 189 inch-pounds.
10. Install the water pump pulley. Pull the imbue pump outside of the timing chain encompass. Disinfected the timing chain cover surface of all remaining gasket information, exercising aggravation not to gouge the surface. Disinfected the drench pump bolt threads so there is inappreciable friction as they are installed.
Fill the radiator with a 50-50 antifreeze-to-water mixture. Connect the negative battery terminal.
