Water Pump: Service and Repair

Water Pump Replacement

Removal Procedure

1. Remove the air cleaner intake duct.
2. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory (w/o LS9) (Drive Belt Replacement - Accessory)Drive Belt Replacement - Accessory (LS9) (Drive Belt Replacement - Accessory).
3. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (GE 47716) (Cooling System Draining and Filling (GE 47716)).

4. Reposition the inlet and outlet hose clamps at the water pump.
5. Remove the inlet and outlet hoses from the water pump.

6. Reposition the heater inlet and surge tank outlet hose clamps at the water pump.
7. Remove the heater inlet and surge tank outlet hoses from the water pump.

8. Remove the water pump bolts.

9. Remove the water pump.
10. Remove the water pump gaskets.
11. Clean and inspect the water pump.

Installation Procedure

1. Install the water pump and gaskets to the engine block.

Caution: Refer to Fastener Caution (Fastener Caution).

2. Install the water pump bolts.

1. Tighten the water pump bolts a first pass to 15 Nm (11 lb ft).
2. Tighten the water pump bolts a final pass to 30 Nm (22 lb ft).

3. Install the heater inlet and surge tank outlet hoses to the water pump.
4. Position the heater inlet and surge tank outlet hose clamps at the water pump.

5. Install the inlet and outlet hoses to the water pump.
6. Position the inlet and outlet hose clamps at the water pump.
7. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory (w/o LS9) (Drive Belt Replacement - Accessory)Drive Belt Replacement - Accessory (LS9) (Drive Belt Replacement - Accessory).
8. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (GE 47716) (Cooling System Draining and Filling (GE 47716)).

9. Install the air cleaner intake duct.