HEATER BLOWS COLD AIR CONTINUED.

TM9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

77. HEATER BLOWS COLD AIR CONTINUED.

Check heater core (1) for damage or leaks (page 4-1).

Step 4.

If core is damaged or leaking, replace (page 4-1265).

Go to heater control valve (2). Disconnect cable (3) from valve. Check valve

Step 5.

and cable for freedom of movement and damage (page 4-1).

a. If cable is damaged or binding, lubricate (LO 9-2320-270-10) or

replace (page 4-1284).

b. If valve is damaged or binding, lubricate (LO 9-2320-270-10) or

replace (page 4-1302).

If heater still blows cold air, install left side panel and close left

side of hood (TM 9-2320-270-10) and notify direct support

maintenance.

TA239791

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