Water Pump-4.7L: Installation

The water pump on 4.7L engines is bolted directly to the engine timing chain case cover.

1. Clean gasket mating surfaces.
2. Using a new gasket, position water pump and install mounting bolts as shown. (Fig 1). Tighten the water pump mounting bolts to 24 N.m (18 ft. lbs.).
   Fig 1: Installing Water Pump

   Courtesy of DAIMLERCHRYSLER CORP.
3. Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.
4. Connect radiator lower hose to water pump.
5. Relax tension from belt tensioner (Figure). Install drive belt (Refer to DRIVE BELTS ).
   CAUTION: When installing the serpentine accessory drive belt, belt must be routed correctly. If not, engine may overheat due to water pump rotating in wrong direction. Refer to (Fig 2) for correct belt routing. Or, refer to the Belt Routing Label located in the engine compartment. The correct belt with correct length must be used.
   Fig 2: Belt Routing (3.7L)

   Courtesy of DAIMLERCHRYSLER CORP.
6. Position upper fan shroud and fan blade/viscous fan drive assembly.
7. Be sure the upper and lower portions of the fan shroud are firmly connected. All air must flow through the radiator.
8. Install two fan shroud-to-radiator screws (Figure).
9. Be sure of at least 25 mm (1.0 inches) between tips of fan blades and fan shroud.
10. Install fan blade/viscous fan drive assembly to water pump shaft (Refer to COOLING/ENGINE/FAN DRIVE VISCOUS CLUTCH-INSTALLATION ).
11. Fill cooling system (Refer to STANDARD PROCEDURE ).
12. Connect negative battery cable.
13. Start and warm the engine. Check for leaks.