TM 9--2350--292--20--1
0187 00--145
0187 00
PREVENTIVE MAINTENANCE CHECKS AND SERVICES INCLUDING
LUBRICATION INSTRUCTIONS -- CONTINUED
TABLE 3 PREVENTIVE MAINTENANCE CHECKS AND SERVICES
INCLUDING LUBRICATION INSTRUCTIONS, SEMIANNUALLY -- CONTINUED
ITEM
NO.
NOT FULLY
MISSION
CAPABLE
IF:
PROCEDURE
LOCATION
ITEM TO
CHECK/
SERVICE
INTERVAL
SEMIANNUALLY
EXTERIOR
55
Auxiliary Power
Unit (ONAN) --
Continued
c. Replace primary fuel filter (4)
(WP 0609 00).
d. Replace secondary fuel filter (5)
(WP 0609 00).
e. Tighten fuel and oil connections that
leak.
f. Inspect air system components;
replace if damaged or deteriorated.
g. Service air cleaner. Check for
cleanliness and obstructions. Replace filter
if damaged (WP 0608 00). Clean if dirty
(TM 9--2350--292--10).
h. Start APU engine
(TM 9--2350--292--10). Listen for unusual
noises in engine and generator which
might indicate improper operation.
i. Observe warning lights and oil pressure
gauge to see if unit is functioning properly
(TM 9--2350--292--10). Oil pressure gauge
should indicate approximately 30 to 45 psi
(207 to 310 kPa).
j. Shut off APU engine
(TM 9--2350--292--10).
Any fuel
leaks.
Dirty or
obstructed air
cleaner.
Any unusual
noises.
Malfunctioning
lights or low
pressure.
EMERGENCY FUEL
SHUT--OFF
PRIMARY SECONDARY
FUEL FILTERS
AUX. POWER UNIT
5
4
