Water Pump Replacement

Water Pump Replacement (6.6L (LLY))

Removal Procedure





1. Remove the left wheelhouse inner panel.
2. Remove the thermostat housing crossover.
3. Remove the crankshaft balancer.
4. Remove the water pump to engine coolant pipe nuts.
5. Remove the engine wiring harness retainer from the inner stud.





6. Remove the water pump bolts. Note the location of the bolts. The bolts are three different lengths.
7. Remove the water pump.
8. Remove and discard the water pump O-ring and coolant pipe gasket.
9. If required, clean and inspect the water pump.

Installation Procedure





1. Lubricate the water pump O-ring with engine oil.
2. Install the engine coolant pipe gasket and water pump O-ring.
3. Install the water pump.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the water pump bolts. Ensure the correct length bolt is used in the proper location.

Tighten
Tighten the bolts to 21 N.m (15 lb ft).





5. Install the engine wiring harness retainer on the water pump outlet pipe inner stud.
6. Install the water pump to engine coolant pipe nuts.

Tighten
Tighten the nuts to 21 N.m (15 lb ft).

7. Install the thermostat housing crossover.
8. Install the crankshaft balancer.
9. Install the left wheelhouse inner panel.