Chrysler RAM TRUCK 2500 1994 Service Manual page 279

7 - 24 COOLING SYSTEM •
(3) Remove the bolt retaining the wiring harness
near the top of water pump. Position wire harness to
the side.
(4) Remove the accessory drive belt. Refer to the
Engine Accessory Drive Belt section of this group.
(5) Remove water pump mounting bolts (Fig. 24).
u ^J9107-5 %
Fig. 24 Pump Removal/Installation—5.9L Diesel
(6) Clean water pump sealing surface on cylinder
block.
INSTALLATION
(1) Install new O-ring seal i n groove on water
pump (Fig. 25).
O - R I N G
S E A L
WATER
PUMP
GROOVE
J 9 1 0 7 - 6
Fig. 25 Pump O-ring Seal—5.9L Diesel
(2) Install water pump. Tighten mounting bolts to
24 N-m (18 ft. lbs.) torque.
(3) Install accessory drive belt. Refer to the Engine
Accessory Drive Belt section of this group.
(4) Install the bolt retaining the wiring harness
near top of water pump.
(5) Fill cooling system. Refer to Refilling Cooling
System i n this section.
(6) Connect both battery cables.
(7) Start and warm the engine. Check for leaks.
WATER PUMP BYPASS HOSE
A water pump bypass hose (Fig. 26) is used be­
tween the intake manifold and water pump on all
gas powered engines. To test for leaks, refer to Test­
ing Cooling System for Leaks i n this group.
F A N BLADE
ASSEMBLY
WATER
PUMP
PULLEY
WATER PUMP
THREADED
NUT
THREADED SHAFT
(WATER PUMP HUB)
VISCOUS FAN DRI V E
CRANKSHAFT
PULLEY
J9307-32
Fig. 26 Water Pump Bypass Hose—Typical
REMOVAL—3.9L V - 6 O R 5.2/5.9L V-8 ENGINES
WITHOUT AIR CONDITIONING
(1) Partially drain cooling system. Refer to Drain­
ing Cooling System i n this group.
Do not waste reusable coolant. I f the solution is
clean, drain the coolant into a clean container for re­
use.
WARNING: CONSTANT TENSION H O S E C L A M P S
A R E U S E D ON MOST COOLING S Y S T E M H O S E S .
WHEN REMOVING O R INSTALLING, U S E ONLY
T O O L S D E S I G N E D F O R SERVICING THIS T Y P E O F
CLAMP, S U C H A S S P E C I A L CLAMP T O O L (NUMBER
6094) (FIG. 27). SNAP-ON C L A M P T O O L (NUMBER
HPC-20) MAY B E U S E D F O R L A R G E R C L A M P S . A L ­
WAYS W E A R S A F E T Y G L A S S E S WHEN SERVICING
CONSTANT TENSION C L A M P S .
CAUTION: A number or letter is stamped into the
tongue of constant tension clamps (Fig. 28). If re­
placement is necessary, u s e only an original equip­
ment clamp with a matching number or letter.
(2) Loosen both bypass hose clamps and position to
the center of hose.
(3) Remove hose from vehicle.