TM 9-2350-261-20-1
T A C H O M E T E R M A L F U N C T I O N S
I N I T I A L S E T U P
Tools:
Equipment Conditions:
General Mechanics Tool Kit (Item 30, App D)
Engine stopped/shutdown (see your -10)
Carrier blocked (see your -10)
Personnel Required:
Trim vane lowered (see your -10)
Unit Mechanic
Power plant front access door opened
Helper (H)
(see your -10)
Drivers power plant access panel removed
References:
(page 24-25)
Power plant front access cover removed
see your -lo
(page 24-24)
Crew compartment power plant access panel
removed (see your -10)
1. Start engine (see your -10).
2. Does tachometer fail to show any reading?
GO TO PAGE 3-232
1. Stop engine (see your -10).
2. Remove tachometer cable (1) from tachometer (2).
3. Start engine (see your -10).
4. Observe tachometer cable drive tip (3).
5. Does tachometer cable drive tip fail to rotate?
1. Stop engine (see your -10).
2. Replace tachometer
(page 11-13).
3. Verify no faults found.
3-230