TM 55-1510-220-10
Figure 2-14. Fuel Management Panel
crossfeeding.
A
lever
lock
switch,
placarded
CROSSFEED, is moved from the center OFF position to
the left or to the right, depending on direction of fuel flow.
This opens the crossfeed valve and energizes the standby
pump on the side from which crossfeed is desired. During
crossfeed operation with firewall fuel valve closed,
auxiliary tank fuel will not crossfeed. When the crossfeed
mode is energized, a green FUEL CROSS-FEED light on
the caution/advisory panel will illuminate. Crossfeed
system operation is described in Chapter 9. The
crossfeed valve is protected by a 5-ampere circuit breaker
placarded CROSSFEED located on the overhead circuit
breaker panel (fig. 2-27).
f.
Firewall Shutoff Valves.
CAUTION
Do not use the fuel firewall shutoff
valve to shut down an engine,
except in an emergency. The
engine-driven
highpressure
fuel
pump obtains essential lubrication
from fuel flow. When an engine is
operating,
this
pump
may
be
severely damaged (while cavitating)
if the firewall valve is closed before
the condition lever is moved to the
FUEL CUTOFF position.
2-31
