TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7.
ENGINE WILL NOT SHUT DOWN.
WARNING
Care must be taken when working under hood while engine is running. Hands must be kept away
from belts, fan, and other moving parts. Failure to observe this precaution could cause serious
injury to personnel.
Step 1.
Turn manual override thumbscrew (1) on fuel solenoid (2) fully counterclockwise to stop engine.
Step 2.
Set multimeter to 20 vdc scale. Connect red test lead to terminal (3) on fuel solenoid (2) and black test lead
to ground. Have assistant rotate KEY SWITCH (4) counterclockwise to off position. Check for no voltage
on multimeter. Disconnect test leads.
a.
If multimeter reads no voltage, fuel solenoid (2) must be replaced. Notify Direct Support
Maintenance.
b.
If multimeter reads 11 to 13 vdc, go to step 3.
Step 3.
Set multimeter to 20 vdc scale. Connect red test lead to output terminal (5) on rear of KEY SWITCH (4) and
black test lead to ground. Check for no voltage on multimeter. Disconnect test leads.
a.
If multimeter reads 11 to 13 vdc, replace KEY SWITCH (4) (page 2-740).
b.
If multimeter reads no voltage and engine still will not shut down, notify Direct Support
Maintenance.
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