OPERATE ENGINE COOLANT HEATER KIT (M548A3)
THIS WORK PACKAGE COVERS:
Operation (page 0041 00-1).
MASTER SWITCH ON
The engine coolant heater keeps batteries and engine warm for easier starting during extreme
C) or below. The coolant is heated and circulated through the engine and two
heat exchanger plates in battery compartment. The heater is designed to operate safely while
left alone for up to 12 hours. The engine coolant heater controls are on a control box mounted
below the middle windshield. Two manual shutoff valves in power plant compartment let you
stop the flow of coolant through the engine coolant heater when its not running.
Make sure MASTER SWITCH is ON.
Turn FUEL PUMP switch OFF.