TM 5-3895-379-23-1
0007
MALFUNCTION
Fuel Lift Pump Pressure Low.
CORRECTIVE ACTION
1.
Remove fuel line from output port of fuel lift pump (WP 0116).
2.
Attach pressure gauge to output port of fuel lift pump.
3.
Lock steering frame (TM 5-3895-379-10).
4.
Turn battery disconnect switch to ON position (TM 5-3895-379-10).
5.
Have assistant crank engine for 10 seconds.
NOTE
Normal pressure is 6-10 psi (40-70 kPa).
Minimum pressure is 4.5 psi (30 kPa).
6.
Observe pressure gauge.
7.
Note highest indication on pressure gauge.
8.
Turn engine start switch to OFF position (TM 5-3895-379-10).
NOTE
Time should be greater than 30 seconds.
9.
Observe amount of time for maximum pressure noted during cranking to drop by one half.
10.
Remove pressure gauge from fuel lift pump.
11.
Install fuel line to fuel lift pump (WP 0116).
a.
If fuel lift pump outlet pressure is below 4.5 psi (30 kPa), replace fuel lift pump (WP 0116).
b.
If time for maximum pressure (noted during cranking) to drop by one half is less than
30 seconds, replace fuel lift pump (WP 0116).
0007-8
03/15/2011Rel(1.8)root(tswp)wpno(T00013)
