TM 5-3810-307-24-1-2
Fuel Quantity Test
The fuel quantity should be checked if the heater has difficulty starting or maintaining a flame.
NOTE
Measure the fuel quantity when the crane's batteries are properly
charged. Supply voltage to the coolant heater should be between 22 and
26 VDC.
Test Preparation.
a.
Disconnect the fuel supply line where it enters the engine coolant heater. Insert the end
of the hose into a graduated, glass measuring container (size: 1.7 ounces or 50 cm3).
b.
Turn on the engine coolant heater manually by pressing the "heater on"
pushbutton
in the carrier cab. The fuel line will be full and bled when the fuel delivery is uniform and
bubble-free (after approximately 60 seconds).
c.
Press the "heater on"
pushbutton to stop the fuel metering pump and empty the
measuring container
Measurement.
a.
Turn on the coolant heater manually by pressing the "heater on"
pushbutton. Fuel
delivery starts automatically after a 60-second delay and will shut off after approximately
105 seconds.
b.
Wait for the coolant heater control unit to attempt a restart. The fuel delivery will restart
automatically and will shutoff again after approximately 75 seconds.
c.
Press the "heater on"
pushbutton to stop the fuel metering pump.
d.
Check the fuel level in the measuring container. The volume of fuel in the container
should be between 0.6 and 0.7 ounces (17.1 and 20.9 ml).
e.
Reconnect the fuel supply line where it enters the engine coolant heater.
Change-1 J-43
