RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
MANIFOLD HEATER OPERATION CHECK
Tools and Special Tools
Tool kit, general mechanic's (item 59, WP 0490 00)
WP 0336 00
Do not smoke or use open flame when working on fuel system: explosion may occur, causing severe
injury or death.
After maintenance has been performed on either the intake manifold heater or on the manifold heater fuel system, operation
of the heater should be checked before installing the powerplant. To check manifold heater operation perform steps 2 thru 6.
Prepare the powerplant for operation outside the vehicle (see WP 0099 00).
The main fuel line shutoff solenoid should be closed and the engine cranked to obtain an air supply to the manifold heaters.
Operate purge pump and simultaneously press heater button in pump handle.
If heater is operative, heat will be felt at intake manifold turbosupercharger tube.
If there is no heat, first check manifold heater accessory on which maintenance was performed. Check wiring harness and
heater spark plug lead for faulty connections. Check installation of spark plug, nozzle, and fuel line fittings, and check
operation of heater fuel supply and return solenoids.
Manifold heater operation can be checked with the powerplant in the vehicle by removing the engine
deck (see WP 0336 00) and placing a hand on the intake manifold downstream from the heater.
END OF WORK PACKAGE
0135 00-1/2 blank