TM 5-3805-298-23-1
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Table 1. Heater Does Not Blow Warm Air When Temperature Control Panel Is Set on Maximum Heat -
Continued.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Heater Does Not Blow Warm
Test Step 3. Inspect Heater for Leaks.
1. Remove seat assembly and
Air When Temperature
pedestal (WP 0355).
Control Panel Is Set on
2. Start engine (TM 5-3805-298-10).
Maximum Heat Continued
3. Inspect three heater hoses
No Leaks Proceed to Test Step 4.
(Figure 2, Item 1), heater control
Hose(s) Leaking Tighten or replace
valve (Figure 2, Item 2), two hose
hose clamps (Figure 2, Item 3).
connections (Figure 2, Item 4), and
Proceed to Test Step 6.
heater coil (Figure 2, Item 5) for
Class III leaks.
Heater Control Valve Leaking -
Replace heater control valve
(WP 0407).
Proceed to Test Step 6.
Heater Coil Leaking - Replace heater
coil (WP 0421).
Proceed to Test Step 6.
Figure 2. Heater Hoses.
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