TM 10-3930-641-34-1
ENGINE TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. ENGINE STALLS AT LOW RPM
Step 1. Check for low fuel pressure.
See no. 3, step 1.
Step 2. Check to see if idle RPM is too low.
Adjust governor so idle RPM is same as rack setting. (See page 3-102.)
NOTE
Only technicians with training in governor adjustments should make the adjustment.
Step 3. Inspect fuel injection pumps.
Repair/replace fuel injection pump. (See page 3-32.)
Step 4. Check governor control linkage.
Adjust governor control linkage. (See TM 10-3930-641-20.)
Step 5. Check governor control linkage.
Adjust governor control linkage. (See TM 10-3930-641-20.)
6. ENGINE HUNTS OR ENGINE CHANGES SPEEDS SUDDENLY BY ITSELF (NO ADJUSTMENT FROM OPERATOR)
Step 1. Inspect governor.
Replace parts that are broken or not up to specification. (See page 3-83.)
Step 2. Inspect fuel transfer pump.
Repair pump. (See page 3-58.)
Step 3. Check for free travel of fuel rack.
Clean/adjust fuel rack. (See page 3-102.)
Step 4. Check fuel injection pumps for correct installation.
Install correctly. (See page 3-31.)
2-11
