TM 5-2420-231-23-1
0030
Table 1. Heating and A/C Troubleshooting Procedures - Continued.
030
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Heater Does Not Blow
Test Step 2. Inspect Heater Duct and
Warm Air When
Lower Air Vents.
Temperature Control Is
1. Turn ignition switch to the off posi-
Set to Maximum Heat -
tion (TM 5-2420-231-10).
Continued
2. Remove front and rear lower vent
Vent Hose Connected to Vent Base -
base (Figure 3, Item 1) from instru-
Proceed to step 3.
ment panel right-side cover (Figure
Vent Hose Disconnected - Connect
3, Item 2) (WP 0176), and ensure
vent hose (Figure 3, Item 3) to vent base
vent hose (Figure 3, Item 3) is con-
(Figure 3, Item 1) and install vent base
nected to vent base (Figure 3, Item
(Figure 3, Item 1) on instrument panel
1).
right-side cover (Figure 3, Item 2) (WP
0176).
Proceed to Test Step 6.
Figure 3. Lower Vent.
0030
