Water Pump Replacement LY7

Tools Required

EN 46104 Water Pump Pulley Holding Tool

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the generator drive belt. Refer to Drive Belt Replacement .



3. Use the EN 46104  (1) in order to retain the water pump pulley.



4. Remove the water pump pulley bolts.
5. Remove the water pump pulley.



6. Remove the water pump bolts.
7. Remove the water pump.
8. Remove and DISCARD the water pump seal.
9. Carefully clean the water pump sealing surfaces.

1. Install a NEW water pump seal.
2. Install the water pump.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the water pump bolts.

Tighten
Tighten the water pump bolts to 10 N·m (89 lb in).




4. Install the water pump pulley and the water pump pulley bolts.



5. Use the EN 46104  (1) in order to retain the water pump pulley.
6. Install the water pump pulley bolts.

Tighten
Tighten the water pump pulley bolts to 12 N·m (106 lb in).

7. Install the generator drive belt. Refer to Drive Belt Replacement .
8. Fill the cooling system. Refer to Cooling System Draining and Filling .

Water Pump Replacement RPOs L26/L32

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Reposition the accessory wiring junction block.
3. Loosen the water pump pulley bolts.
4. Remove the drive belt. Refer to Drive Belt Replacement .
5. Remove the water pump pulley bolts.
6. Remove the water pump pulley.
7. Remove the power steering pump mounting bolts and reposition. Refer to Power Steering Pump Replacement .



8. Remove the water pump bolts.



9. Remove the water pump.
10. Remove the water pump gasket.
11. Clean and inspect the water pump gasket mating surfaces.

1. Install the gasket and the water pump.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the water pump bolts.

Tighten

•	Tighten the long water pump bolts to 34 N·m (25 lb ft).

•	Tighten the short water pump bolts to 22 N·m (16 lb ft).




3. Install the water pump pulley.
4. Install the water pump pulley bolts.

Tighten
Tighten the bolts to 13 N·m (115 lb in).

5. Install the power steering pump. Refer to Power Steering Pump Replacement .
6. Install the drive belt. Refer to Drive Belt Replacement .
7. Install the accessory wiring junction block.
8. Fill the cooling system. Refer to Cooling System Draining and Filling .

Water Pump Replacement LS4

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the battery and battery tray. Refer to Battery Tray Replacement .
3. Remove the drive belt. Refer to Drive Belt Replacement - Accessory .
4. Remove the water pump bolts (318).
5. Remove the water pump (300) and gasket (314). Discard the gasket.
6. Clean and inspect the water pump gasket mating surfaces.

1. Install the water pump (300) and a NEW gasket (314).

Notice: Refer to Fastener Notice in the Preface section.

2. Tighten the water pump bolts (318).

Tighten
Tighten the bolts to 10 N·m (89 lb in).

3. Install the drive belt. Refer to Drive Belt Replacement - Accessory .
4. Install the battery tray and battery. Refer to Battery Tray Replacement .
5. Fill the cooling system. Refer to Cooling System Draining and Filling .