Dodge RAM TRUCK 1500 1995 Service Manual page 295

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COOLING SYSTEM SERVICE PROCEDURES 7 - 25
(4) Install water pump to engine as follows: Guide
water pump fitting into bypass hose as pump is being
installed. Install water pump bolts (Fig. 18). 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 water pump pulley. Tighten bolts to 22
N-m (16 ft. lbs.) torque. Place a bar or screwdriver
between water pump pulley bolts (Fig. 16) to prevent
pulley from rotating.
(10) Relax tension from automatic belt tensioner
(Fig. 17). Install drive belt.
CAUTION: When installing the serpentine accessory
drive belt, belt must be routed correctly. If not, en­
gine may overheat due to water pump rotating in
wrong direction. Refer to (Figs. 21 or 22) for correct
belt routing. The correct belt with correct length
must be used.
AUTOMATIC
TENSIONER
J9307-55
Fig. 21 Belt Routing—8.0L V-10 Engine—With A/C
(11) Position fan shroud and fan blade/viscous fan
drive assembly to vehicle as a complete unit.
(12) Install fan shroud to radiator. Tighten bolts to
6 N-m (50 in. lbs.) torque.
(13) Install fan blade/viscous fan drive assembly to
water pump shaft.
(14) Fill cooling system. Refer to Refilling Cooling
System in this group.
(15) Connect negative battery cable.
(16) Start and warm the engine. Check for leaks.
AUTOMATIC
TENSIONER
J9307-56
Fig. 22 Belt Routing—8.0L V-10 Engine—Without
A/C
WATER PUMP—5.9L DIESEL
The diesel engine water pump draws coolant from
radiator outlet and circulates it through engine,
heater core and back to radiator inlet. The crank­
shaft pulley drives the water pump with a serpentine
drive belt (Fig. 23). An automatic belt tensioner (Fig.
23) is used to prevent the belt from slipping.
Fig. 23 Water Pump—5.9L Diesel—Typical (non-A/C
shown)
MEMOWML
(1) Disconnect the negative battery cables from
both batteries.
(2) Drain cooling system. Refer to Draining Cooling
System in this section.