TM 5-3805-298-23-1
0037
Table 1. Engine Misfires, Runs Rough, or Is Unstable - Continued.
037
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 1. Check for Active
Engine Misfires, Runs
Diagnostic Codes.
Rough, or Is Unstable -
1. Connect MSD (WP 0008) and
Continued
select C6.6 924. Start the engine
(TM 5-3805-298-10).
CAUTION
Keep all parts clean from contaminants. Contaminants may cause rapid wear and
shortened component life.
2. Using MSD, check for active
Diagnostic Codes Are Not Active -
diagnostic codes (WP 0008).
Proceed to Test Step 2.
Diagnostic Codes Are Active - Refer
to (WP 0005) and repair active diag-
nostic codes first.
Test Step 2. Inspect for
Contaminated Fuel.
1. Turn ignition switch and battery
disconnect switch to the OFF
position (TM 5-3805-298-10).
2. Visually inspect primary fuel filter
No Contamination in Fuel/Water
fuel/water separator bowl
Separator Bowl - Proceed to Test
(Figure 1, Item 2) for particulate
Step 3.
and water contamination.
Water Contamination in Fuel/Water
Separator Bowl - Proceed to step 3.
Particulate Contamination in Fuel/
Water Separator Bowl - Drain fuel
(WP 0216), replace primary fuel filter
(WP 0219), secondary fuel filter
(WP 0220), and third fuel filter
(WP 0222).
Proceed to Test Step 8.
3. Position drain pan under machine.
4. Open valve (Figure 1, Item 3) on
fuel/water separator bowl
(Figure 1, Item 2), and drain
contents of fuel/water separator
bowl.
5. Close valve (Figure 1, Item 3) on
fuel/water separator bowl. Dispose
of drained fluid IAW local policy
and ordinances.
0037-3
