Dodge RAM TRUCK 1500 1995 Service Manual page 331

BR
ENGINE BLOCI HEATERS 7 - 81
ENGINE BLOCK HEATERS
DESCRIPTION AND OPERATION
An optional engine Mock heater is available with
for all models. The heater is equipped with a power
cord. The cord is attached to an engine compartment
component with tie-straps. The heater warms the en­
gine providing easier engine starting and faster
warm-up in low temperatures. The heater is mounted
in a core hole of the engine cylinder block (in place of
a freeze plug) with the heating element immersed in
engine coolant. Connect the power cord to a grounded
110-120 volt AC electrical outlet with a grounded,
three wire extension cord.
WARNING: DO NOT OPERATE ENGINE U N L E S S
B L O C K HEATER CORD HAS B E E N DISCONNECTED
FROM P O W E R S O U R C E AND S E C U R E D IN P L A C E .
THE P O W E R CORD MUST B E S E C U R E D IN ITS R E ­
TAINING C L I P S AND ROUTED AWAY FROM E X ­
HAUST MANIFOLDS AND MOVING PARTS.
The 3.9L/5.2L/5.9L gas powered engine has the
block heater located on the right side of engine next
to the oil filter (Fig. 1).
The 8.0L V-10 engine has the block heater located
on the right side of engine next to the engine oil dip­
stick tube (Fig. 2).
The 5.9L diesel engine has the block heater located
on the right side of the engine below the exhaust
manifold (Fig. 3).
Fig. 1 Engine Block Heater—3.9U5.2U5.9L Gas
Powered Engine
HEATER J9407-43
Fig. 2 Engine Block Heater—8.0L V-10 Engine
Fig. 3 Engine Block Heater—5.9L Diesel Engine
REMOVAL
(1) Disconnect negative battery cable(s) from bat-
teryGs).
(2) Drain coolant from radiator and cylinder block.
(3) Remove power cord from heater by unplugging
(Figs. 1 or 2). On the diesel engine, the cord is con­
nected to the heater with a knurled cap. Unscrew
this cap for cord removal.
(4) Loosen (but do not completely remove) the
screw at center of block heater (Fig. 1 or 2). On the
diesel engine, an alien headed screw is used.
(5) Remove block heater from engine by carefully
prying from side-to-side. When removing block