TM 1-1520-238-T-4
4–68
Change 1
4–13.
POWER PLANTS – MAINTENANCE OPERATIONAL CHECK (ENGINE 2) (cont)
4–13
Task
Result
u. On pilot center circuit breaker panel
(fig 4–22), check that ENG START circuit
breaker stays closed.
If ENG START circuit breaker does not stay closed,
go to paragraph 4–37.
v. On pilot power quadrant (fig. 4–26), move
engine NO 2 PWR lever to FLY. On EMERG
CHK OVSP TEST panel (fig. 4–33), set and
hold CKT A switch to ENG 2. Check that
engine 2 NG remains stable and release
CKT A switch.
If NG does not remain stable with CKT A switch
closed, go to paragraph 4–41.
w. Set and hold CKT B switch to ENG 2.
Check that engine 2 NG remains stable and
EMERG PWR indicator is lighted. Release
CKT B switch. Set and hold CKT A and
CKT B switches to ENG 2 and check for
drop in engine 2 NG. Release switches.
If NG does not remain stable with CKT B switch
closed, go to paragraph 4–42.
If EMERG PWR indicator is not lighted with CKT B
switch closed, go to paragraph 4–54.
If NG does not decrease with CKT A and CKT B
switches closed, go to paragraph 4–43.
If engine 2 does not restart with CKT A and CKT B
switches released, go to paragraph 4–60.
x. Check that the following indicators on pilot
caution/warning panel (fig. 4–29) are not
lighted:
CHIPS ENG 2 indicator
If CHIPS ENG 2 indicator is lighted, check for metal
chips on chip detector (TM 1-1520-238-23). If chips
are not present, go to paragraph 4–44.
OIL BYP ENG 2 indicator
If OIL BYP ENG 2 indicator is lighted, check for
clogged oil filter (TM 1-1520-238-23). If filter is not
clogged, go to paragraph 4–45.
OIL PSI ENG 2 indicator
If OIL PSI ENG 2 indicator is lighted, go to
paragraph 4–51.
FUEL BYP ENG 2 indicator
If FUEL BYP ENG 2 indicator is lighted, check for
clogged fuel filter (TM 1-1520-238-23). If filter is not
clogged, go to paragraph 4–46.
FUEL PSI ENG 2 indicator
If FUEL PSI ENG 2 indicator is lighted, go to
paragraph 4–47.
