BATTERIES NOT WARMED WHEN BATTERY WARMERS CONNECTED TO POWER SOURCE (Cont)

TM 9-2320-285-24-1

2-68.

HEATERS TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

BATTERIES NOT WARMED WHEN BATTERY WARMERS CONNECTED TO POWER SOURCE (Cont)

Step 2.

Connect power cord between junction box and 110 Vac outlet.

Check if both battery warmers are cold.

WARNING

Battery warmers operate from 110 Vac power source. Disconnect winterization system cable

from receptacle at front bumper of tractor before proceeding. Serious injury or death can

result from contact with energized 110 Vac power lines.

Disconnect power cord from junction box and 110 Vac outlet.

If both battery warmers are cold, go to step 4 below.

If only one battery warmer is cold, go to step 3 below.

Step 3.

Check for loose connection at wire nuts connecting battery warmer 3-wire cord to 3-wire cord from

junction box.

If connection is loose, reconnect (para 2-73c).

b. If connection is not loose, replace battery warmer (para 2-73c).

Step 4.

Use an ohmmeter to check continuity of 3-wire cord between battery warmers and junction box.

If continuity is not obtained, replace 3-wire cord (para 2-73c).

If continuity is obtained, replace battery warmers (para 2-73c).

COOLANT NOT WARMED WHEN COOLANT HEATER CONNECTED TO POWER SOURCE

Step 1.

Check if engine oil heater and battery warmers are not operating (engine oil heater and battery warmers

cold to the touch).

If engine oil heater and battery warmers are not operating, go to Malfunction 8 below.

If engine oil heater or battery warmers are operating, go to step 2 below.

2-766