Chrysler RAM TRUCK 2500 1994 Service Manual page 274

Fig. 9 Water Pump Bolts—3.9L ¥-6 or 5.2/5.9L ¥-8
Gas Engines—Typical
INSTALLATION
(1) Clean gasket mating surfaces.
(2) Using a new gasket, install water pump to en­
gine as follows: Guide water pump nipple into bypass
hose as pump is being installed. Install water pump
bolts (Fig. 9). Tighten water pump mounting bolts to
40 N-m (30 ft. lbs.) torque.
(3) Position bypass hose clamp to bypass hose.
(4) Spin water pump to be sure that pump impeller
does not rub against timing chain case/cover.
(5) Install a new O-ring to the heater hose coolant
return tube (Figs. 7 or 8). Coat the new O-ring with
antifreeze before installation.
(6) Install coolant return tube and its mounting
bolt to engine (Figs. 7 or 8). Be sure the slot i n tube
bracket is bottomed to mounting bolt. This will prop­
erly position return tube.
(7) Connect radiator lower hose to water pump.
(8) Connect heater hose and hose clamp to coolant
return tube.
(9) Install water pump pulley. Tighten bolts to 27
N*m (20 ft. lbs.) torque. Place a bar or screwdriver
between water pump pulley bolts (Fig. 4) to prevent
pulley from rotating.
(10) Relax tension from automatic belt tensioner
(Figs. 5 or 6). 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. 10,11 or 12) for cor­
rect belt routing. The correct belt with correct
length must be used.
(11) Position fan shroud and fan blade/viscous fan
drive assembly to vehicle as a complete unit.
(12) Install fan shroud.
(13) Install fan blade/viscous fan drive assembly to
water pump shaft.
*IF VEHICLE IS N O T EQUIPPED WITH POWER
STEERING, THIS WILL BE A N IDLER PULLEY. J9307-26
Fig. 10 Belt Routing—3.9L ¥-6 or 5.2/5.9L W~8
LDC-Gas Engines
AUTOMATIC
TENSIONER
PWR.
STRG.
PUMP
J9307-53
Fig. 11 Belt Routing—5.9L HDC-Gas Engine—With
A/C
(14) Fill cooling system. Refer to Refilling Cooling
System i n this group.
(15) Connect negative battery cable.
(16) Start and warm the engine. Check for leaks.
WATER PUMP—8.0L V-10 ENGINE
A centrifugal water pump circulates coolant
through the water jackets, passages, intake manifold,