TM 5-3805-262-20
3-31. FUEL SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. LOW FUEL PRESSURE (Cont).
S t e p 2 . ( C o n t ) .
Install adapter (TK item 20) in elbow port from which plug was re-
moved.
Install pressure transducer (blue stripe, TK item 17) in adapter (TK
item 20).
Connect transducer cable W4 connector P1 to VTM J2.
Connect transducer cable W4 connector P2 to transducer connector.
Dial 50 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 -150 to +150. If it is not, STE/ICE is defective (refer to
TM 9-4910-571-12&P).
Bleed air from fuel system (page 4-40).
Press and release TEST.
Crank engine for 30 seconds using ignition key switch. Be sure to
return ignition key switch to off position after cranking .
Display should indicate 20 to 30 psi.
a. If VTM display indicates 20 to 30 psi, troubleshooting is com-
plete. Problem was in tube between fuel injection pump feed pump
and filter head. Disconnect test equipment and reinstall plug in
elbow.
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