TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 3.
Check for presence of congealed fuel (wax). If congealed fuel is found, drain tank
STEP 4.
Verify the problem has been resolved.
WARNING
Cooling system operates at high temperature and pressure. Contact with high pressure steam
and/or liquids can result in burns and scalding. Shut down generator set, and allow system to cool
before performing checks, services, and maintenance. Failure to comply can cause injury or
death to personnel.
When running, generator set engine has hot metal surfaces that will burn flesh on contact. Shut
down generator set, and allow engine to cool before performing checks, services, and
maintenance. Wear gloves and additional protective clothing as required. Failure to comply can
cause injury or death to personnel.
SYMPTOM
21.
Engine Misfires, Runs Rough, or is Unstable.
MALFUNCTION
Fuel Supply Problem.
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
Verify fuel quality. If fuel is not clean or if signs of wax are present, drain and
replace fuel (TM 9-6115-729-10, WP 0016).
STEP 3.
Check for a fuel supply problem and verify fuel pressure WP 0013, SYMPTOM
13).
STEP 4.
If no fuel supply problem is found, engine has an internal problem. Replace the
engine (WP 0098).
STEP 5.
Verify the problem has been resolved.
MALFUNCTION
Inlet Air or Exhaust Restrictions.
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
Check for dirty or clogged air filters. Replace air filters (WP 0070).
STEP 3.
Check exhaust system for restrictions. Repair or replace components, as
required (WP 0068).
STEP 4.
Verify the problem has been resolved.
0011-25
