TM 1-1520-238-T-4
6–60
Change 5
6–13.
DRIVE SYSTEM – DYNAMIC MAINTENANCE OPERATIONAL CHECK (cont)
6–13
Task
Result
h. On pilot caution/warning panel (fig 6–17),
check OIL PSI NOSE GRBX 2 indicator.
If OIL PSI NOSE GRBX 2 indicator lights, and HOD
displays a 55 LB to 85 LB (normal) reading for NGB
2, shutdown helicopter and go to paragraph 6–59.
If OIL PSI NOSE GRBX 2 indicator lights, and HOD
displays a 29 LB to 54 LB (low) reading for NGB 2 oil
pressure, go to paragraph 6–60.
i. On CPG HOD, check FD/LS display for
NGB 1 oil temperature reading.
If HOD displays a 140 C or more reading for NGB 1
oil temperature, shutdown helicopter and go to
paragraph 6–19.2.
If HOD displays a reading between 121 C and 139
C for NGB 1 oil temperature, go to
paragraph 6–19.2.
j. On pilot caution/warning panel, check OIL
HOT NOSE GRBX 1 indicator.
If OIL HOT NOSE GRBX 1 indicator lights, HOD
displays a 121 C and 139 C (high) oil temperature
reading for NGB 1, go to paragraph 6–63.
If OIL HOT NOSE GRBX 1 indicator lights, and HOD
displays a 103 C to 120 C (normal) oil temperature
reading for NGB 1, shutdown helicopter and go to
paragraph 6–62.
k. On CPG HOD, check FD/LS display for
XMSN 1 oil temperature reading.
If HOD displays a 140 C or higher reading for XMSN
1 oil temperature, shutdown helicopter and go to
paragraph 6–20.2.
If HOD displays a reading between 096 C and 139
C for XMSN 1 oil temperature, go to
paragraph 6–20.2.
l. On pilot caution/warning panel, check OIL
HOT MAIN XMSN 1 indicator.
If OIL HOT MAIN XMSN 1 indicator lights, HOD
displays a 096 C and 139 C (high) oil temperature
reading for XMSN 1, go to paragraph 6–67.
If OIL HOT MAIN XMSN 1 indicator lights, and HOD
displays a 070 C to 095 C (normal) oil temperature
reading for XMSN 1, shutdown helicopter and go to
paragraph 6–66.
m. On CPG HOD, check FD/LS display for
XMSN 2 oil temperature reading.
If HOD displays a 140 C or more reading for XMSN 2
oil temperature, shutdown helicopter and go to
paragraph 6–21.2.
If HOD displays a reading between 096 C and 139
C (high) for XMSN 2 oil temperature, go to
paragraph 6–21.2.
