2003 DODGE RAM radiator cap

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Page 330 of 2895

DODGE RAM 2003  Service Repair Manual REMOVAL
(1) Disconnect the battery negative cable.
(2) Drain the coolant (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Remove the power cord from the heater by
unplugging (Fig. 8).
(4) Loosen (but

Page 331 of 2895

DODGE RAM 2003  Service Repair Manual (4) Using a suitable size socket, loosen and remove
the block heater element (Fig. 10).
INSTALLATION
(1) Clean and inspect the threads in the cylinder
block.
(2) Coat heater element threads with Mopar

Page 339 of 2895

DODGE RAM 2003  Service Repair Manual ENGINE COOLANT
THERMOSTAT - 5.9L DIESEL
DESCRIPTION
CAUTION: Do not operate an engine without a ther-
mostat, except for servicing or testing. An engine
with the thermostat removed will operate in the

Page 340 of 2895

DODGE RAM 2003  Service Repair Manual This system capacity will not effect warm up or
cold weather operating characteristics if the thermo-
stat is operating properly. This is because coolant
will be held in the engine until it reaches th

Page 344 of 2895

DODGE RAM 2003  Service Repair Manual DIAGNOSIS AND TESTINGÐRADIATOR
COOLANT FLOW
Use the following procedure to determine if coolant
is flowing through the cooling system.
(1) Idle engine until operating temperature is
reached. If the u

Page 346 of 2895

DODGE RAM 2003  Service Repair Manual (12) Install coolant reserve/overflow container or
degas container to fan shroud and tighten the bolts
to 8.5 N´m (75 in. lbs.).
(13) Connect upper radiator hose and install
clamp.
(14) Install batte

Page 347 of 2895

DODGE RAM 2003  Service Repair Manual (6) Remove the power steering cooler mounting
bolts and position the power steering cooler out of
the way.
(7) Disconnect the transmission cooler lines at the
transmission. The transmission cooler wil

Page 348 of 2895

DODGE RAM 2003  Service Repair Manual loaded pressure relief valve. This valve opens when
system pressure reaches the release range of 97-to-
124 kPa (14-to-18 psi).
A rubber gasket seals the radiator filler neck. This
is done to maintain
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