Dodge Ram Truck 1500-2500-3500. Manual — part 246

INSTALLATION

3.7L/4.7L ENGINE

The water pump on 3.7L/4.7L engine is bolted directly
to the engine timing chain case cover.

1. Clean the gasket mating surfaces.

2. Using a new gasket, position water pump and

install the mounting bolts.. Tighten the water pump
mounting bolts to 58 N·m (43 ft. lbs.).

3. Spin the water pump to be sure that the pump

impeller does not rub against the timing chain
case/cover.

4. Connect the radiator lower hose to the water pump.

5. Relax the tension from the belt tensioner. Install the

drive belt (Refer to 7 - COOLING/ACCESSORY
DRIVE/DRIVE BELTS - INSTALLATION).

CAUTION: When installing the serpentine acces-
sory drive belt, the belt must be routed correctly. If
not, the engine may overheat due to the water
pump rotating in the wrong direction. Refer to for
the correct belt routing. Or, refer to the Belt Rout-
ing Label located in the engine compartment. The
correct belt with correct length must be used.

6. Install the radiator fan (Refer to 7 - COOLING/EN-

GINE/RADIATOR FAN - INSTALLATION).

7. Fill cooling system (Refer to 7 - COOLING - STAN-

DARD PROCEDURE).

8. Connect the negative battery cable.

9. Start and warm the engine. Check for leaks.

7 - 90

ENGINE

DR/DH

5.7L ENGINE

1. Install water pump and mounting bolts. Tighten

moubting bolts to 24 N·m (18 ft. lbs.).

2. Install heater hoses.

3. Install upper and lower radiator hoses.

4. Install belt tensioner assembly.

5. Install idler pulleys.

6. Install

A/C

compressor

and

alternator

brace.

Tighten bolt and nuts to 28 N·m (21 ft. lbs.).

7. Install fan shroud assembly.

8. Connect washer bottle wiring and hose.

9. Install coolant fill bottle.

10. Install fan clutch assembly.

11. Install serpentine belt.

12. Connect negative battery cable.

13. Fill coolant.

14. Pressure test coolant system

5.9L DIESEL ENGINE

1. Install new O-ring seal in groove on water pump.

2. Install water pump with the weep hole facing down-

ward. Tighten mounting bolts to 24 N·m (18 ft. lbs.)
torque.

3. Install accessory drive belt (Refer to 7 - COOLING/

ACCESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).

4. Fill cooling system (Refer to 7 - COOLING - STAN-

DARD PROCEDURE).

5. Connect both battery cables.

6. Start and warm the engine. Check for leaks.

DR/DH

ENGINE

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8.3L ENGINE

1. If water pump is being replaced, install the heater

hose fitting to the pump. Tighten fitting to 16 N·m
(144 in. lbs.) torque. After fitting has been torqued,
position fitting as shown in. When positioning fit-
ting, do not back off (rotate counterclockwise). Use
a sealant on the fitting such as Mopar

Thread

Sealant With Teflon. Refer to the directions on the
package.

CAUTION:

This

heater

hose

fitting

must

installed to pump before pump is installed to
engine.

2. Clean the o-ring mating surfaces at rear of water

pump and front of timing chain/case cover.

3. Apply a small amount of petroleum jelly to o-ring.

This will help retain o-ring to water pump.

4. Install water pump to engine as follows: Guide

water pump fitting 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.

5. Position bypass hose clamp to bypass hose.

6. Spin water pump to be sure that pump impeller does not rub against timing chain case/cover.

7. Connect radiator lower hose to water pump.

8. Connect heater hose and hose clamp to heater hose fitting.

9. Install drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).

10. Position fan shroud and fan blade/viscous fan drive assembly to vehicle as a complete unit.

11. Install fan shroud to radiator. Tighten bolts to 6 N·m (50 in. lbs.) torque.

12. Install fan blade/viscous fan drive assembly to water pump shaft.

13. Fill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).

14. Connect negative battery cable.

15. Start and warm the engine. Check for leaks.

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