l Radiator has one drain location at lower left hand side (right side if facing the
truck). The draincock faces toward the engine on the back side of the radiator
Let radiator cool before removing cap. Remove radiator
cap in two steps. First, place a thick cloth over the cap
and slowly rotate cap left to its first stop; pause, and let
pressure escape from cooling system. Then push cap down
and rotate cap farther left until you can remove it. Failure
to follow this procedure can result in serious burns.
a. TURN RADIATOR CAP TO THE LEFT AND REMOVE.
b. TURN DRAINCOCKS AT THERMOSTAT HOUSING, OIL
COOLER, AND RADIATOR TO THE LEFT TO OPEN.
c. WORKING FROM BEHIND THE RIGHT FRONT WHEEL (left
as seen by facing the truck), UNDERNEATH THE VEHICLE,
REACH UP AND PULL THE WIRE CONNECTOR FROM THE
ETHER SENDER UNIT.
d. USING ADJUSTABLE WRENCH (SEE APPENDIX B), TURN
ETHER SENDER TO THE LEFT TO REMOVE FROM ENGINE
BLOCK DRAIN PORT.
e. ALLOW ALL OLD COOLANT TO DRAIN.