TM 9-6115-730-24
0008
TROUBLESHOOTING USING AL FAULT CODES - Continued
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.
SYMPTOM
1.
AL 1
MALFUNCTION
High Coolant Temperature
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
Turn the ENGINE CONTROL switch to MANUAL START.
STEP 2.
On GSC keypad, press ALARM CODES.
STEP 3.
Verify AL1 appears on upper display. Check setpoints per WP 0083.
Verify GSC OP5-0 setpoint P015 (WP 0083, Table 4).
STEP 4.
Verify if any fault codes or engine fault codes are displayed on upper display and
record. If fault codes displayed, troubleshoot per WP 0009.
STEP 5.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Battery Disconnect
switch is OFF; DEAD CRANK SWITCH is OFF.
STEP 6.
Open right side engine access door and check coolant level in coolant recovery
(overflow) bottle. If required, replace coolant per TM 9-6115-730-10, WP 0015.
STEP 7.
Inspect coolant system lines for leaks per PMCS (WP 0016).
STEP 8.
Inspect alternator and water pump belts. Check water pump belt tension.
a. If required, tighten water pump belt.
b. If required, replace alternator or water pump belts (WP 0075).
STEP 9.
Inspect engine for damaged fan.
If fan damaged, repair per WP 0066.
STEP 10.
Inspect radiator for obstructions or blockage. Remove obstructions or blockage if
present.
STEP 11.
Inspect radiator for damage. If radiator damaged, repair or replace (WP 0068).
STEP 12.
Verify the problem has been resolved.
0008-2
