TM 55-1520-240-T
7-8.2 APU HYDRAULIC STARTING SYSTEM VISUAL CHECK
INITIAL SETUP
Applicable Configurations:
References:
TM 55-1520-240-23
All
Tools:
Equipment Condition:
Aircraft Mechanic’s TOOI Kit.
TM 55-1520-240-23:
NSN 5180-00-323-4692
Electrical Power Of
Battery Disconnected
Materials:
Hydraulic Power Off
None
Right Aft Transmission
Baffle Open
Personnel Required:
Cargo Ramp Operational Level
67U10 Medium Helicopter Repairer
(Task 7-3.4)
TASK
RESULT
1. Check APU start module accumulator
If accumulator (1) or accumulator gage (2) is
(1).
damaged. replace accumulator.
2. Check apu start module (3).
If any tube to module (3) is loose or damaged.
tighten or replace it as required. If electrical con-
nector to module is loose or damaged. tighten or
replace it as required. If wiring to connector is
damaged, repair or replace it as required.
3. Check APU start accumulator gage (4).
If gage (4) is Ioose or damaged. tighten or replace
it as required.
4. Check APU start accumulator (5).
If accumulator (5) is loose or damaged, tighten or
replace it as required. If any tube to accumulator is
Ioose or damaged, tighten or replace it as re-
quired.
5. Check APU motor pump (6).
If pump (6) is loose or damaged. tighten or replace
it es required. If any hose to pump is loose or
damaged. tighten or replace it as required.
7-8.2
FOLLOW-ON MAINTENANCE:
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