Water Pump - 5.9L: Installation
- Clean gasket mating surfaces.
- Using a new gasket, install water pump to engine as follows: Guide water pump nipple into bypass hose as pump is being installed. Install water pump bolts. Tighten water pump mounting bolts to 40 N.m (30 ft. lbs.) torque.
- Position bypass hose clamp to bypass hose.
- Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.
- Install a new O-ring to the heater hose coolant return tube. (Figure). Coat the new O-ring with antifreeze before installation.
- Install coolant return tube and its mounting bolt to engine. (Figure). Be sure the slot in tube bracket is bottomed to mounting bolt. This will properly position return tube.
- Connect radiator lower hose to water pump.
- Connect heater hose and hose clamp to coolant return tube.
- Install accessory drive belt. (Refer to DRIVE BELTS - 5.9L ).
- Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit.
- Install fan shroud.
- Install fan blade/viscous fan drive assembly to water pump shaft.
- Fill cooling system. (Refer to STANDARD PROCEDURE - REFILLING COOLING SYSTEM 5.9L ENGINE ).
- Connect battery negative cable.
- Start and warm the engine. Check for leaks.