3.7L Engine

The water pump on 3.7L 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. See Fig 1. Tighten the water pump mounting bolts to 54 N.m (40 ft. lbs.).
   Fig 1: Installing Water Pump - 3.7L/4.7L - Typical

   Courtesy of DAIMLERCHRYSLER CORP.

   1 - WATER PUMP

   2 - TIMING CHAIN COVER

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. Install drive belt (Refer to COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION) .
   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: Identifying Belt Routing - 3.7L/4.7L

   Courtesy of DAIMLERCHRYSLER CORP.

   1 - GENERATOR PULLEY

   2 - ACCESSORY DRIVE BELT

   3 - POWER STEERING PUMP PULLEY

   4 - CRANKSHAFT PULLEY

   5 - IDLER PULLEY

   6 - TENSIONER

   7 - A/C COMPRESSOR PULLEY

   8 - WATER PUMP PULLEY

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.
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 INSTALLATION  ).
11. Fill cooling system (Refer to COOLING - STANDARD PROCEDURE) .
12. Connect negative battery cable.
13. Start and warm the engine. Check for leaks.