TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
g. GAGES (continued).
(9) TACHOMETER FAILS TO OPERATE WHEN
ENGINE IS RUNNING (continued).
Replace tachometer (para 7-9). Verify
problem is solved.
WARNING
B.
A protective fan screen must be
installed prior to doing main-
tenance in the engine compartment,
when the engine is running or
engine is in ground hop mode.
Contact with a rotating fan can
cause injury.
1. Reconnect tachometer drive shaft to ta-
chometer.
2. Install protective fan screens (para 2-8).
3. Disconnect tachometer drive shaft from ta-
chometer drive on engine.
4. Have assistant hold fuel shutoff out and
crank engine (refer to TM 9-2350-287-10).
5. Observe tachometer drive for rotation.
Does tachometer drive rotate?
GO TO STEP E
C. 1. Connect tachometer drive shaft to tachom-
eter drive on engine.
2. Disconnect tachometer drive shaft from bulk-
head coupling.
Continued on next page
2-129
