TM 1-1520-238-23
Change 2
1-246.7
1.74.
APU OPERATING INSTRUCTIONS – USING BATTERY POWER – continued
ad. Monitor transmission oil temperature and
pressure every 30 minutes (or as required) of
APU operation.
(1) Set DATA ENTRY switch (31) to FD/LS
(2) On DEK (26) press any key except ENTER
SPACE or SHIFT.
(3) On DEK (26), press and release ABC/1 (32)
and YZ*/9 (33) keys.
(4) To return to the maintenance FD/LS menu
and abort the FD/LS transmission check, set
DATA ENTRY switch (31) to STBY and re-
peat steps (1) and (2).
ae. Perform maintenance task.
af. Turn off two generators.
(1) Set GEN 1 switch (21) on ELEC PWR panel
(11) to OFF/RESET.
(2) Set GEN 2 switch (23) on ELEC PWR panel
(11) to OFF/RESET.
CAUTION
The APU may be restarted after roll down
(compressor comes to a complete stop).
Wait 30 seconds for fuel to drain. The
PTO clutch duty cycle allows two consec-
utive start attempts and then a 20 minute
delay before the next start attempt. No
more than three starts shall be allowed in
a 1 hour period. Start attempts in which
the clutch does not engage do not apply.
Failure to comply could result in damage
to the PTO clutch.
ag. Turn off APU.
(1) Set RUN switch (19) on APU fire test panel
(15) to OFF.
NOTE
Allow APU to roll down before proceeding
with the following procedures.
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M04-1601-21
M04-1601-23
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PRI
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M04-1601-13A
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