Dodge RAM 1500 1998 Owner's Manual page 381

7 - 66 ENGINE
WATER PUMP - 8.0L (Continued)
(15) Remove the heater hose fitting from water
pump if pump replacement is necessary. Note posi-
tion (direction) of fitting before removal. Fitting must
be re-installed to same position.
CAUTION: Do not pry the water pump at timing
chain case/cover. The machined surfaces may be
damaged resulting in leaks.
CLEANING
Clean gasket mating surfaces as necessary.
INSPECTION
Visually inspect the water pump and replace if it
has any of the following conditions:
• The body is cracked or damaged
• Water leaks from the shaft seal. This is evident
by traces of coolant below the vent hole
• Loose or rough turning bearing. Also inspect
thermal fan drive
• Impeller rubbing the pump body
INSTALLATION
(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 (Fig. 57). When
positioning fitting, do not back off (rotate counter-
clockwise). 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 be 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 (Fig. 56). 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 (Fig. 55). 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 impel-
ler 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/AC-
CESSORY DRIVE/DRIVE BELTS - INSTALLA-
TION).
(10) Position fan shroud and fan blade/viscous fan
drive assembly to vehicle as a complete unit.
Fig. 57 Heater Hose Fitting Position - 8.0L V-10
1 - HEATER HOSE FITTING
2 - WATER PUMP
(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.
DR