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Edition – Rev 0
21-10
CABIN HEATING – MAINTENANCE PRACTICE
3. HOT AIR VALVES REPLACEMENT
The following procedure applies to both LH and RH defrost valves.
Additional info &
References
Remove upper and lower engine cowling
Unscrew cabin heat valve control cable and remove
Bowden (and sheat) from Bowden stop on valve
Remove hot conduit from valve
Unscrew the bolt that attach valve to firewall
Reverse these step to install a new one, then apply hot
cabin heat rigging procedure
Figure 8 - Hot air valve fixing bolts