TM 5-3805-262-20
3-31. FUEL SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. LOW FUEL PRESSURE (Cont).
Step 10. At electric fuel pump and fuel tank, loosen two nuts securing fuel
suction tube.
Disconnect fuel suction tube from elbow at electric fuel pump.
Compressed air used for cleaning purposes will not exceed 30 psi. Use
o n l y w i t h e f f e c t i v e c h i p g u a r d i n g a n d p e r s o n a l p r o t e c t i v e e q u i p m e n t
( g o g g l e s / s h i e l d , g l o v e s,
e t c ) . F a i l u r e t o d o s o c o u l d c a u s e s e r i o u s
i n j u r y t o e y e s a n d p o s s i b l e b l i n d n e s s .
If you hurt your eyes or if a
f o r e i g n o b j e c t i s b l o w n i n t o y o u r e y e s , s e e k m e d i c a l a t t e n t i on
immediately.
Use compressed air and clear any blockage from fuel suction tube.
Reconnect fuel suction tube to elbow at electric fuel pump.
Tighten two nuts at electric fuel pump and fuel tank to secure fuel
suction tube.
Dial 49 into TEST SELECT.
Press and hold TEST until CAL appears on display then release TEST.
Wait for offset value to appear on display. Offset value should be
between -4 to +4. If it is not, STE/ICE is defective (refer to TM
9-4910-571-12&P).
Press and release TEST.
Turn ignition key switch to on position.
VTM display should indicate 3.2 to 9 psi.
Turn ignition key switch to off position.
3-254
