TM 1-1520-238-T-4
6–53
6–12.
DRIVE SYSTEM – INDICATORS MAINTENANCE OPERATIONAL CHECK (cont)
6–12
Task
Result
v. On pilot caution/warning panel (fig. 6–17),
check TEMP TR indicator.
If TEMP TR indicator is lighted, go to paragraph 6–30.
w. On CPG caution/warning panel (fig. 6–18),
check TEMP TR indicator.
If TEMP TR indicator is lighted on CPG
caution/warning panel but not on pilot caution/warning
panel, refer to TM 1-1520-238-T-6 to troubleshoot
CPG caution/warning system.
If TEMP TR indicator is lighted on both
caution/warning panels, go to paragraph 6–30.
x. On pilot caution/warning panel, check OIL
HOT NOSE GRBX 1 indicator.
If OIL HOT NOSE GRBX 1 indicator is lighted, go to
paragraph 6–31.
y. On pilot caution/warning panel, check OIL
HOT NOSE GRBX 2 indicator.
If OIL HOT NOSE GRBX 2 indicator is lighted, go to
paragraph 6–32.
z. On pilot caution/warning panel, check OIL
PSI NOSE GRBX 1 indicator.
If OIL PSI NOSE GRBX 1 indicator is not lighted, go
to paragraph 6–33.
aa. On pilot caution/warning panel, check OIL
PSI NOSE GRBX 2 indicator.
If OIL PSI NOSE GRBX 2 indicator is not lighted, go
to paragraph 6–34.
ab. On pilot caution/warning panel, check
CHIPS NOSE GRBX 1 indicator.
If CHIPS NOSE GRBX 1 indicator is lighted, go to
paragraph 6–35.
ac. On pilot caution/warning panel, check
CHIPS NOSE GRBX 2 indicator.
If CHIPS NOSE GRBX 2 indicator is lighted, go to
paragraph 6–36.
ad. On pilot master caution/warning panel
(fig. 6–19), check LOW RPM ROTOR
indicator.
If pilot LOW RPM ROTOR indicator is not lighted, go
to paragraph 6–37.
ae. On CPG master caution/warning panel,
check LOW RPM ROTOR indicator.
If CPG LOW RPM ROTOR indicator is not lighted, go
to paragraph 6–38.
af. On pilot and CPG master caution/warning
panels, check HIGH RPM ROTOR
indicators.
If either or both HIGH RPM ROTOR indicators is
lighted, go to paragraph 6–39.
ag. On pilot and CPG caution/warning panels,
check VIB GRBX indicators.
If both VIB GRBX indicators are lighted, go to
paragraph 6–41.
If VIB GRBX indicator is lighted on CPG
caution/warning panel but not on pilot caution/warning
panel, refer to TM 1-1520-238-T-6 to troubleshoot
CPG caution/warning system.
ah. On pilot center circuit breaker panel
(fig. 6–15), check ENG CUT circuit breaker.
If ENG CUT circuit breaker does not stay closed, go
to paragraph 6–40.
