TM 9-2350-277-20-1ENGINE OVERHEATS—Continued 0014 007Y1. Engage thermostatic fan speed switch (see your -10).2. Observe ventilating fan speed.3. Does speed stay the same?YESNO7YN1. Replace thermostatic fan switch(WP 0231 00).2. Verify no faults found.8Y1. 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?YESNO8YN1. Disengage thermostatic fan speedswitch.2. Replace variable speed fan drive(WP 0249 00).3. Verify no faults found.0014 00-3
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