cleadus Jordan Posted 15 hours ago Share Posted 15 hours ago Where is the defroster blend door on 89R model Mack Quote Link to comment https://www.bigmacktrucks.com/topic/76224-defroster-blend-door/ Share on other sites More sharing options...
0 mowerman Posted 4 hours ago Share Posted 4 hours ago it should be inside the heater Quote Link to comment https://www.bigmacktrucks.com/topic/76224-defroster-blend-door/#findComment-586881 Share on other sites More sharing options...
0 Joey Mack Posted 4 hours ago Share Posted 4 hours ago The flaps are behind the center section where the controls are. If you have never pulled one apart, you need to be patient and aware that there are cables and not long wires. You can lean it back and reach in to disconnect it. You need to look at the plug on the fan speed switch as well as the back of the speed switch for loose blades and dark spots. Its an Indak switch and cheap enough to replace... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76224-defroster-blend-door/#findComment-586882 Share on other sites More sharing options...
Question
cleadus Jordan
Where is the defroster blend door on 89R model Mack
Link to comment
https://www.bigmacktrucks.com/topic/76224-defroster-blend-door/Share on other sites
2 answers to this question
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.