7740 Ford ac doesn't work

   / 7740 Ford ac doesn't work #1  

Nelson Camp

New member
Joined
Sep 29, 2025
Messages
3
Tractor
7740 Ford
while running my ac on low fan speed ac was working fine. the fan quit running no ac. I turned fan speed to 2&3 the fan started up but no cool air. I turned fan speed to 1 compressor kicks in but doesn't blow don't understand what is going on. any help will be appreciated
 
   / 7740 Ford ac doesn't work #2  
Welcome to TBN!

My guess would be you have a bad resistor located under the roof assembly in the evaporator area.
 

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   / 7740 Ford ac doesn't work
  • Thread Starter
#3  
Thanks for your help. How do I check this I check this part I think I found it
 
   / 7740 Ford ac doesn't work #4  
Put an ohmmeter on it and measure resistance.
Ho speed has no resistance. Medium and low have resistance. Low is higher resistance than medium.
 
   / 7740 Ford ac doesn't work
  • Thread Starter
#5  
when I removed it where I could see it I found a broken wire thanks again for the help
 

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