TM 9-2350-277-20-1
ENGINE OVERHEATS—Continued
0014 00
7Y
1. Engage thermostatic fan speed switch (see your -10).
2. Observe ventilating fan speed.
3. Does speed stay the same?
YES
NO
7YN
1. Replace thermostatic fan switch
(WP 0231 00).
2. Verify no faults found.
8Y
1. Observe rotation of ventilating fan (1) and generator drive pulleys
(2) on drive unit.
2. Is fan pulley rotating as fast as the generator pulley?
YES
NO
8YN
1. Disengage thermostatic fan speed
switch.
2. Replace variable speed fan drive
(WP 0249 00).
3. Verify no faults found.
0014 00-3
