TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 6.
Check the fuel pressure after the fuel filter while the engine is being cranked (WP
a. If the fuel pressure is low, replace the fuel filters (WP 0079).
b. If the fuel pressure is still low, check the following items (WP 0102).
(1) Fuel transfer pump.
(2) Fuel transfer pump coupling.
(3) Fuel pressure regulating valve.
STEP 7.
Perform the Injector Solenoid Test and the Cylinder Cutout Test (WP 0013,
SYMPTOM 8).
STEP 8.
Verify the problem has been resolved.
MALFUNCTION
Generator Malfunction.
CORRECTIVE ACTION
Inspect generator for problems or restrictions that would place excess load on engine.
Visually check generator rotor shaft for excessive play, vibration, or noise (WP 0096). If
problem is not resolved, go to Engine Misfires, Runs Rough, or is Unstable procedure
SYMPTOM 21.
SYMPTOM
30.
Auxiliary Fuel Pump Does Not Operate.
MALFUNCTION
Auxiliary Fuel Pump Solenoid Valve.
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to COOL DOWN/ STOP.
STEP 2.
Check for 24 Vdc across auxiliary fuel pump valve (AFPV) pins 1 and 2 with AUX
FUEL switch ON. Listen for auxiliary fuel pump and AFPV operation.
a. If 24 Vdc is present, proceed to step 3.
b. If 24 Vdc is not present, proceed to step 7.
STEP 3.
Set Battery Disconnect Switch to OFF/RESET. Set DEAD CRANK SWITCH to
OFF. On EMCP set ENGINE CONTROL switch to OFF/RESET.
STEP 4.
On EMCP, set AUX FUEL switch to OFF (down).
STEP 5.
Open left front doors, left rear doors, and right rear doors.
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