Water Pump: Service and Repair

Water Pump Replacement (LE5)

Tools Required

J 43651 Water Pump Holding Tool

Removal Procedure




1. Remove the intake manifold cover.
2. Remove the thermostat housing.
3. Remove the water pump access plate from the front cover.





Important: A drain plug has been provided at the bottom of the water pump assembly for additional coolant drainage from the engine block and water pump.

4. Drain the coolant from the water pump using the plug at the bottom of the pump.





Important: The water pump holding tool supports the sprocket and chain during water pump service. The tool must be used or the balance shaft must be re-timed.

5. Install the J 43651 into position.
6. Tighten the bolts on the water pump holding tool into the threads on the water pump sprocket.
7. Install the access cover bolts that were removed earlier to secure the water pump holding tool to the front cover assembly.
8. Remove the 3 inner water pump sprocket to water pump blots.





Important: Be sure to remove both water pump bolts from the front of the engine block.

9. Remove the 2 water pump bolts.




10. Remove the rear 2 water pump bolts.




11. Remove the water pump.
12. Remove and discard the water pump O-ring seal.

Installation Procedure





Important: Prior to installing the water pump, read the entire procedure. This will help avoid balance shaft chain re-timing and ensure proper sealing.

1. Install a NEW water pump O-ring seal.

Important: A guide pin can be created to aid in water pump alignment. Use a M 6 m x 6 mm stud. Thread the pin into the water pump sprocket.

2. Using the guide pin, align the pin with the water pump holding tool.
3. Position the water pump against the engine block and hand tighten the water pump bolts.

Notice: Refer to Fastener Notice.

4. Install the inner water pump sprocket bolts. After 2 are snug, remove the guide pin and install the 3rd bolt.

Tighten the bolts to 25 N.m (18 lb ft).

5. Tighten the water pump sprocket bolts last.

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




6. Remove the J 43651.




7. Install the water pump access plate and bolts.

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

8. Install the thermostat housing.
9. Install the intake manifold cover.