Disconnect the APU fuel lines from the fuel manifold and from the start fuel
b.
nozzle.
Connect suitable drain lines to the disconnected lines, and place the open ends
c.
of the drain lines into a waste fuel capacitor (one-quart minimum capacity).
Note
If desired, the fuel lines may be disconnected from the fuel
solenoid valves rather than from the fuel manifold and start
fuel nozzle. Connect suitable drain lines to the fuel solenoid
valves, and place the open ends of the drain lines into a
waste fuel container (one-quart minimum capacity).
See figure 1-4. Press DC CONTROL circuit breaker.
d.
Move START-RUN-OFF switch to RUN.
e.
Move BOOST PUMP switch to ROOST PUMP.
f.
g. Move START-RUN-OFF switch from RUN to START, and motor the APU until
air-free fuel flows through the drain lines; then, move START-RUN-OFF switch from
START to OFF.
Move ROOST PUMP switch to OFF.
h.
Pull DC CONTROL circuit breaker.
i.
Disconnect the drain lines, and reconnect the APU fuel lines to either the fuel
j.
solenoid valves, or to the fuel manifold and start fuel nozzle.
Reconnect the harness connector to the APU ignition exciter.
k.
3-9. ADJUSTMENT.
3-10. Only the adjustment procedure for the APU fuel control is given in this section.
Adjustment procedures for other APU components must be obtained from the applicable
APU maintenance manual.
Acceleration Control, APU Model T-62T-2. (See figure 3-2.)
a.
(1) To adjust acceleration schedule, remove cap covering acceleration
schedule adjusting setscrew.
3-5
