TM 1-1520-238-T-5
8–51
8–10.
ENGINE INSTRUMENTS – MAINTENANCE OPERATIONAL CHECK (cont)
8–10
Task
Result
(Step m. cont)
If pilot NG RPM% indicator vertical scale indicators or
digital readouts do not indicate between 0 and 5%, go
to paragraph 8–34.
If pilot FUEL quantity indicator vertical scale
indicators or digital readout do not indicate existing
fuel (20 pounds), go to paragraph 8–35.
If pilot ENG OIL indicator vertical scale indicators do
not indicate 0 pressure, go to paragraph 8–36.
If pilot ENG–RTR RPM% indicator vertical scale
indicators do not indicate 0%, go to paragraph 8–37.
M68-067
SELECT SWITCH
TEST PUSHBUTTON
Figure 8–35.
CPG SDD
Task
Result
n. On the CPG SDD panel (fig. 8–35), rotate
selector switch to SELECT. Press the TEST
switch and check all CPG engine
instruments.
If all CPG engine instruments have every other
vertical scale indicators not lighted, replace SDC
(TM 1-1520-238-23).
If any single CPG engine instrument vertical scale
indicator does not light for 3 seconds, replace
applicable indicator (TM 1-1520-238-23).
o. On the CPG dim/test panel (fig. 8–32), set
the DGT OFF/NORM/TST switch to DGT
OFF. Check CPG SDD and TORQUE
indicator digital readouts are blank.
If all digital readouts remain lighted, go to
paragraph 8–38.
If CPG TORQUE indicator digital readouts do not
blank, go to paragraph 8–39.
If CPG SDD panel digital readouts do not blank, go to
paragraph 8–40.
