TM 10-4320-315-24
Table 2-2. Troubleshooting Procedures - (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
ENGINE STOPS SUDDENLY.
Step 1.
Check engine warning lights.
If LOW OIL light is on go to step 3.
If HIGH temperature light is on go to step 5.
If overspeed light is on go to MALFUNCTION 5.
Step 2.
Using multimeter set to 200-ohm scale, check reading across fuel solenoid coil as follows:
Remove screw and remove plug from fuel solenoid.
Place multimeter leads on pins 1 and 2. If reading is not between 60 and 70 ohms, replace
fuel solenoid.
If solenoid is good, replace engine protection module (para. 2-28).
Step 3.
Check dipstick for low oil in engine.
Add oil as necessary.
Step 4.
Check oil pressure switch for open contacts.
Replace switch (para. 2-37) if open circuit is measured between switch terminal and case
ground.
If switch is good, replace engine protection module (para. 2-28).
Step 5.
If HIGH temperature light is on, go to malfunction 6.
Check for open temperature switch.
Replace temperature switch (para. 2-37) if switch is open between case ground and terminal.
Step 6.
Remove cowling cover and check for dirt accumulation between fins of cylinders and in air passages.
If dirty, clean fins and passages.
If fins and passages are clean, replace engine protection module (para. 2-28).
If malfunction still exists, refer to direct support maintenance.
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