B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
Water Pump: Service and Repair
REMOVAL
CAUTION: Do not disassemble the water pump. If a problem is found, replace the water pump assembly.
1. Disconnect the negative battery cable.
2. Drain the engine coolant.
3. Remove the radiator lower hose and the heater return hose from the water pump.
4. Remove the cooling fan and clutch assembly.
5. Loosen the generator mounting bolts.
6. Lift the drive belt tensioner pulley in a counterclockwise direction and remove the drive belt.
7. For vehicles with air conditioning, remove the generator and bracket.
8. Remove the water pump pulley.
9. Remove the water pump attaching bolts and water pump.
10. Remove the water pump gasket.
11. Inspect all parts and repair or replace as necessary.
INSTALLATION
1. Clean the surface of the gasket on the front cover and on the water pump.
NOTE: Use care when scraping aluminum surfaces because gouging could form leak paths.
2. Apply sealer to both sides of a new gasket and place it on the water pump.
3. Install the water pump bolts and tighten to 8.5-12.0 Nm (6-8 ft. lbs.)
4. Install the water pump pulley bolts to 25 Nm (19 ft. lbs.)
5. Install the generator mounting bracket bolts and tighten to 40.3-54.7 Nm (30-40 ft. lbs.)
6. Install the drive belt.
7. Install the cooling fan and clutch assembly.
8. Install the lower radiator hose and the heater return hose from the water pump.
9. Fill the radiator with the specified amount and type of engine coolant.
10. Connect the negative battery cable.
11. Start the engine and check for leaks.
12. Bleed the cooling system.