PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
ITEM TO BE
Operate Air Box
Heater Air Pump
The purpose of the item is to exercise the
vanes in the air box heater air pump.
a. Disconnect lead from fuel shutoff solenoid
(WP 0205 00).
b. To prevent engine from starting, pull fuel cutoff
out (see your -10).
Air pump can be damaged if switch is held
too long. Do not exceed a total of 20
seconds of operation.
c. Have helper crank engine and run air pump at
the same time intermittently for a total of 20
seconds. Listen for air pump operation
(see your -10).
d. Connect lead to fuel shutoff solenoid.
e. Lubricate air motor with OE/HDO every 150
hours/1500 miles, semiannually or as required.