TM 5-3895-379-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 1. Engine Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Open left-side door assembly 1. If fuel lines or fittings are loose,
3.
Engine is Sluggish - Continued.
(TM 5-3895-379-10). Check fuel
tighten. If fuel lines or fittings are
lines and fittings for looseness
damaged, replace fuel lines (WP
and damage such as kinks, tears
or restrictions.
00 or WP 0176 00).
2. If fuel lines or fittings are not loose
or damaged, go to Step 3.
1. If fuel lift pump outlet pressure is
3. Check fuel lift pump pressure.
below 4.5 (30 kPa), replace fuel
Remove fuel line from output
lift pump (WP 0028 00).
side of fuel lift pump (WP 0028
output side of fuel lift pump.
noted during cranking to drop by
Turn battery disconnect switch to
one half is less than 30 seconds,
ON position and lock steering
replace fuel lift pump (WP 0028
frame (TM 5-3895-379-10).
Have assistant crank engine for
3. If lift pump pressure checks are
10 seconds.
OK, install fuel line on fuel lift
Observe pressure gauge. Note
pump (WP 0028 00) and go to Step
highest indication on pressure
4.
gauge. Normal pressure is 6-10
psi (40-70 kPa). Minimum
pressure is 4.5 psi (30 kPa).
Turn engine start switch to OFF
position. Observe amount of time
for maximum pressure noted
during cranking to drop by one
half. Time should be greater than
30 seconds.
Remove pressure gauge from fuel
lift pump.
FUEL
LINE
LIFT
PUMP
OUTPUT PORT
401-176
0006 00-13
