Water Pump: Service and Repair

Water Pump Replacement (LY7)

^ Tools Required
- EN 46104 Water Pump Pulley Holding Tool

Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) Draining and Filling Cooling System (LY7 Static Fill) Draining and Filling Cooling System (L26, LY7, GE 47716 Fill).
2. Remove the generator drive belt.





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.

Installation Procedure





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

3. Notice: Refer to Fastener Notice in Service Precautions.

Install the water pump bolts.
^ Tighten the water pump bolts to 10 Nm (89 inch lbs.).





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 the water pump pulley bolts to 12 Nm (106 inch lbs.).
7. Install the generator drive belt.
8. Fill the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) Draining and Filling Cooling System (LY7 Static Fill) Draining and Filling Cooling System (L26, LY7, GE 47716 Fill).