Dodge ram truck 3500 1996 Service Manual page 319

B R
COOLING SYSTEM 7 - 35
S E R V I C E P R O C E D U R E S (Continued)
CHEMICAL CLEANING
In some instances, use a radiator cleaner (Mopar
Radiator Kleen or equivalent) before flushing. This
will soften scale and other deposits and aid flushing
operation.
CAUTION: Follow manufacturers instructions when
using these products.
R E M O V A L A N D I N S T A L L A T I O N
COOLANT RESERVE/OVERFLOW TANK
TANK REMOVAL—ALL EXCEPT 8.0L V-10
ENGINE
(1) Remove overflow hose from radiator.
(2) Unsnap the coolant reserve/overflow tank from
fan shroud. Lift straight up. The fan shroud is
equipped with T-shaped slots (Fig. 38) to attach the
tank. An alignment pin is located on the side of tank.
INSTALLATION
(1) Snap the tank into the two T-slots and the
alignment pin on fan shroud.
(2) Connect overflow hose to radiator.
Fig. 38 COOLANT RESERVE/OVERFLOW TANK-
ALL EXCEPT 8.0L V-10 ENGINE
TANK REMOVAL—8.0L V-10 ENGINE
(1) Remove overflow hose from radiator.
(2) Remove three tank mounting bolts (Fig. 39)
and remove tank.
C O O L A N T
RESERVE/OVERFLOW
BOLTS (2) J948D-21
Fig. 89 COOLANT RESERVE/OVERFLOW TANK—V-
10 ENGINE
INSTALLATION
(1) Position tank to inner fender.
(2) Install bolts and tighten to 6 N-m (50 in. lbs.)
torque.
(3) Connect overflow hose to radiator.
WATER PUMP—V-6 AND V-8 ENGINES
REMOVAL
The water pump on all models can be removed
without discharging the air conditioning system (if
equipped).
The water pump on all gas powered engines is
bolted directly to the engine timing chain case/cover.
On all 3.9L/5.2L/5.9L gas powered engines, a gas­
ket is used as a seal between the water pump and
timing chain case/cover.
If water pump is replaced because of bearing/shaft
damage or leaking shaft seal, the mechanical cooling
fan assembly should also be inspected. Inspect for
fatigue cracks, loose blades or loose rivets that could
have resulted from excessive vibration. Replace fan i f
any of these conditions are found. Also check condi­
tion of the thermal viscous fan drive. Refer to Viscous
Fan Drive in this group.
(1) Disconnect negative battery cable from battery.
(2) Drain cooling system. Refer to Draining Cool­
ing System in this group.
Do not waste reusable coolant. I f solution is clean,
drain coolant into a clean container for reuse.
(3) Remove windshield washer reservoir tank from
radiator fan shroud. Refer to Group 8K, Windshield
Wiper and Washer Systems.
(4) Disconnect the coolant reserve/overflow tank-
to-radiator hose at the tank.
(5) Remove the four fan shroud mounting bolts at
the radiator (Fig. 40). Do not attempt to remove
shroud from vehicle at this time.