TM 9-2350-247-20-1
TACHOMETER MALFUNCTIONS—Continued
0088 00
2Y
1. Inspect tachometer flexible core.
2. Is flexible core serviceable?
YES
NO
2YN
1. Replace tachometer cable
(WP 0522 00 or WP 0523 00).
2. Verify no faults found.
3Y
1. Remove tachometer adapter from engine (WP 0520 00 or
WP 0521 00).
2. Is tachometer adapter (1) serviceable?
YES
NO
3YN
1. Replace tachometer adapter
(WP 0520 00 or WP 0521 00).
2. Verify no faults found.
4Y
1. Faulty shaft drive assembly.
2. Notify your supervisor.
BY
1. Check tachometer if it gives a steady reading.
2. Does tachometer fail to give a steady reading?
YES
NO
BYN
1. Replace tachometer (WP 0519 00).
2. Verify no faults found.
2BY
1. Check if tachometer cable flexible core has been serviced.
2. Has tachometer cable flexible core been serviced?
YES
NO
2BYN
1. Grease tachometer cable flexible
core (see your PMCS).
2. Verify no faults found.
0088 00-2
