Water Pump: Service and Repair

COOLANT PUMP REPLACEMENT

REMOVAL
1. Negative (-) battery cable.
2. Drain engine cooling system.
3. Air cleaner (ACL) from vehicle.
4. A/C compressor suction pipe bracket (if so equipped).
5. Loosen four water pump pulley bolts-do not remove.
6. Raise and suitably support vehicle.
7. Right lower splash shield.
8. A/C compressor drive belt (if so equipped) by releasing tensioner pulley and removing belt from crankshaft and compressor pulleys.





9. Lower generator cover plate.
10. Loosen generator adjusting bolt and remove water pump/generator drive belt.
11. Crankshaft pulley. See Engine.
12. Water pump pulley (four bolts).
13. Timing belt. See Engine.
14. Oil level indicator (dipstick) guide tube.
15. Upper generator adjusting bracket from water pump (one bolt).

Fig. 19 Water Pump Rubber Seals:

16. Rubber seals from water pump.





17. Water pump mounting bolts and nuts; water pump and gasket from vehicle. Clean water pump and gasket mating surfaces. Inspect water pump by hand for smooth operation. If the pump does not rotate smoothly or produces abnormal noise, replace it.

INSTALLATION
1. New gasket to engine block.
2. Water pump; secure with mounting nuts and bolts. Tighten water pump mounting nuts and bolts to 13 Nm (115 inch lbs.).





3. New rubber seals to water pump.
4. Upper generator adjusting bracket to water pump (one bolt). Tighten upper generator mounting bracket bolt to 23 Nm (17 ft. lbs.).
5. Oil level indicator (dipstick) guide tube.
6. Timing belt. See Engine.
7. Water pump pulley; finger-tighten four bolts.
8. Crankshaft pulley. See Engine.
9. Water pump/generator drive belt to crankshaft, water pump and generator pulleys.
10. Lower generator cover plate. Tighten lower generator cover bolts to 10 Nm (89 inch lbs.).
11. A/C compressor drive belt (if so equipped) by releasing tensioner pulley and installing belt to crankshaft and compressor pulleys.
12. Right lower splash shield.





13. Lower vehicle. Tighten water pump pulley mounting bolts to 24 Nm (18 ft. lbs.). Adjust water pump/generator drive belt tension to the specifications shown. Tighten upper generator adjustment bolt to 23 Nm (17 ft. lbs.).
14. A/C compressor suction pipe bracket (if so equipped).
15. ACL to vehicle.
16. Refill engine cooling system.
17. Negative (-) battery cable.