2-19. TROUBLESHOOTING CHART (continued).
e. AIR CLEANER FAN ASSEMBLY.
The air cleaner fan assembly system consists of two blower motors, the air cleaner blower motor relay, air and
generator system relay switch, neutral safety switch, and circuit breakers 6, and 7, and associated wIring. When
MASTER switch is turned ON, 24VDC is supplied through the master relay to circuit breakers 6 and 7.24 VDC
from wire 20 of wire harness 12376405 Is routed through the generator system and fuel pumps relay, the air
cleaner and generator system relay switch (oil pressure actuated), which provides aground for that circuit, and
through the neutral safety switch to the air cleaner blower motor relay. 24 VDC from circuit breaker 6 is supplied
to the air cleaner blower motors through the air cleaner blower motor relay. The relationship of these
components is shown in the wiring diagram below.
2-80
TM 9-2350-287-20-1