TM 5-2420-231-23-1
0030
Table 1. Heating and A/C Troubleshooting Procedures - Continued.
030
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. A/C Does Not Blow Cold
3. Remove front instrument panel
Air When A/C
right-side cover (WP 0176).
Temperature Control Is
4.
Inspect front lower vent hose (Fig-
Vent Hose OK - Proceed to step 5.
Set to Maximum Cold -
ure 18, Item 3) and rear lower vent
Vent Hose Kinked, Damaged, or
Continued
hose (Figure 18, Item 2) for kinks,
Disconnected - Connect or replace
vent hose (WP 0350).
damage, or disconnections from
Proceed to Test Step 9.
right heater duct (Figure 18, Item 1).
Figure 18. Vent Tube.
0030
5. Remove right-side covers (WP
Heater Duct Loose or Blocked with
0346) and inspect the heater duct
Debris - Remove blockage from heater
for damage, cracks, looseness, or
duct.
blockage.
Install right-side covers (WP 0346) and
front instrument panel right-side cover
(WP 0176).
Proceed to Test Step 9.
Heater Duct Cracked or Damaged -
Replace heater duct (WP 0350).
Proceed to Test Step 9.
