TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 14.
Set ISOCHRONOUS/DROOP switch to DROOP.
STEP 15.
Note position of droop potentiometer on LSM A4.
STEP 16.
Rotate potentiometer counterclockwise (decrease droop percentage). Retest set.
If problem still exists go to step 13a.
a. Problem caused by improper engine operation. Engine may not be
developing enough horsepower.
b. Go to Low power/poor or no response to throttle troubleshooting procedure
(SYMPTOM 22).
STEP 17.
Verify the problem has been resolved.
WARNING
Batteries give off a flammable gas. Do not smoke or use open flame when performing
maintenance. Failure to comply can cause injury or death to personnel and equipment damage
due to flames and explosion.
Lifting batteries from the battery tray can cause back strain. Ensure proper lifting techniques are
used when lifting batteries. Failure to comply can cause serious personal injury.
Battery acid can cause burns to unprotected skin. Wear protective gloves and safety goggles.
Failure to comply can cause injury to personnel.
When disconnecting or removing batteries, disconnect the negative lead that connects directly to
the grounding stud first. Disconnect the negative end of the interconnection cable next. When
installing batteries, reverse the connection sequence. Failure to comply can cause serious injury
to personnel.
SYMPTOM
19.
Engine Will Not Crank (Starter Pinion Engages and Engine Does Not Turn Over).
MALFUNCTION
Starter Motor Defective.
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. On EMCP set ENGINE CONTROL switch
to COOL DOWN/STOP.
STEP 2.
Check battery voltage on GSC display.
a. If battery voltage is 22 Vdc or greater, proceed to step 5.
b. If battery voltage is less than 22 Vdc, proceed to step 3.
STEP 3.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
0011-21
