6300 - Air Conditioner Fan In Cab Not Working

[JD5210]

My neighbors dad has a 1993 cab 6300. In talking with his dad, he said the fan in the cab for the air conditioner was not working. He said if he jumps the relay (I do not know which one) it works. He said he has replaced the relay and it still does not work.

Not much to go on, but thought I would see, if anyone had any ideas.

Does anyone have a wiring diagram for a cab 6300?

 

[Dr Dave]

Power or ground side switches, are used to turn relay on and off. Check all fuses and ground connections, or may have a blower resistor that went bad. Most relays will have a wire diagram on them.

 

[JD5210]

Thanks, I will share you response with my neighbors dad.

 

[Mrfarmertrees]

My A/C went out on my Massey Ferguson cab last year with the exact sounding problem. I also jumped the relay and it worked. Replaced the relay and it worked for a week then blow again. Called and talked with a good mechanic friend who referred me to a guy that works with auto A/Cs who had the same responds as my friend. After describing my problem they both said it was the blower motor. I replaced it ($230) and have been cool since. For what it's worth...