2-40
Change 4
TM 9-2350-267-20
ITEM
42
44
Q-QUARTERLY
PREVENTIVE MAINTENANCE CHECKS AND SERVICES
S-SEMIANNUALLY
l
INTERVAL
l
A-ANNUALLY
B-BIENNIALLY
H-HOURS
MI-MILES
ITEM TO BE
INSPECTED
Backup Hydraulic
system
Auxiliary Power
unit
PROCEDURE
A
B
c
A
B
c
D
E
Open engine compartment access plate (p
3-14) and inspect backup hydraulic pump
(1). Check condition of V-belts (2), tension
and alinement (p 16-26).
Inspect hydraulic lines for leaks and tighten
any loose fittings (p 16-15).
Inspect and tighten loose mounting
hardware (p 16-15).
Start APU (TM 9-2350-267-10). Listen for
unusual noises m engine and generated
starter which might indicate mechanical
malfunction.
Remove APU panel lenses for LOW OIL
PRESSure and HIGH AIR TEMP lights.
Remove bulbs and visually check bulbs for
broken filaments. Replace if necessary.
Check ENGINE OIL PRESSURE gage;
gage should indicate 25-35 psi.
Tighten fuel, oil and air connections that
leak.
Troubleshoot APU as necessary (p 2-252).
