TM 9--2350--292--20--1
0106 00--4
FUEL TRANSFER PUMP FAILS TO OPERATE -- CONTINUED
0106 00
H
Does gauge read 1650 -- 1750 psi?
1. Install 0--4000 psi testing gauge assembly with
adapter in impact wrench pressure port (smaller of
the quick--disconnects) in the refuel/defuel
compartment.
2. Place fuel pump control to CLOSED position and
set flow regulator control handle to 0.5.
3. Start APU (TM 9--2350--292--10) and set system
selector to AUX. Observe gauge.
4. Shut APU down (TM 9--2350--292--10).
no
yes
I
1. Remove gauge from pressure port.
2. Install 0--300 psi dial pressure gauge with adapter in
impact wrench return port (larger of quick
disconnects) in the refuel/defuel compartment.
3. Place fuel pump control to CLOSED position and set
flow regulator control handle to 0.5.
4. Start APU (TM 9--2350--292--10) and set system
selector to AUX. Observe gauge and record
reading.
5. Set flow regulator control handle to 6.0 and observe
gauge and record reading.
6. Shut down APU (TM 9--2350--292--10).
Are pressure readings below 75 psi?
CONTINUED FROM STEP A
no
yes
Go to Step M.
Replace flow control
valve (WP 0555 00).
Verify fault is corrected.
CONTINUED ON NEXT PAGE
WARNING
WARNING