Water Pump

REMOVAL - 2.7L

Fig. 39 Water Pump Weep Passages - 2.7L:

Fig. 40 Primary Water Pump Weep Passage - 2.7L:

Fig. 41 Secondary Water Pump Weep Passage - 2.7L:

NOTE: It is normal for the water pump to weep a small amount of coolant from the primary weep hole (black stain at weep passage). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident from the primary weep passage. This indicates a shaft seal failure and pump must be replaced. Coolant may leak from the secondary weep passage and fill the valley of the engine. If this condition is found, clean the primary weep passage of debris. Be sure to perform a thorough analysis before replacing water pump.

WARNING: DO NOT REMOVE PRESSURE CAP WITH THE SYSTEM HOT AND PRESSURIZED. SERIOUS BURNS FROM COOLANT CAN RESULT.

1. Disconnect negative battery cable.
2. Drain cooling system.

NOTE: The water pump is driven by the primary timing chain.

3. Remove the timing chain cover, timing chain, and all chain guides.

Fig. 38 Water Pump - 2.7L:

4. Remove bolts attaching water pump to block .
5. Remove water pump and gasket.

INSTALLATION - 2.7L
1. Clean all sealing surfaces.
2. Install water pump and gasket. Tighten mounting bolts to 12 Nm (105 in. lbs.).
3. Install timing chain guides, timing chain, and timing chain cover.
4. Reconnect negative battery cable.
5. Fill cooling system.