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JD A/C Compressor Help

B

Brute29

New User
Been reading this forum for a while now, first time poster.

I have worked on a few A/C systems before, but I'm not an expert by no means. Need some help with my current situation. I have an A/C compressor that will not pull the R134a in from my 30lb bottle. I have charged this system before but now there is no pressure on the system. The compressor clutch will only engage when I jump it. I am scared to let it run too long with the jumper wire. Is there a reason that I can not get any Freon into the system?

Thanks in advance
 
Jumpering the power to the compressor for any reasonable length of time will hurt NOTHING. If the system is simply low, this should allow you to add some refrigerant and bring the pressure up enough to trip the clutch cycling switch closed and normal operation will begin.

If the system has completely emptied out it needs to be evacuated before charging. Is that the case?

Also, R134A is REFRIGERANT, NOT Freon.
 
The system was not completely empty, it had about 10 pounds on it. I opened the bottle and added what I could from the bottle. One other issue is that I do have a leak because it wasn't too long ago I recharged it and was working properly. Out of curiosity, what is the difference between refrigerant and Freon?
 
Do the pressures change with the jumper wire on? If not, you may have a bad clutch or broken compressor shaft. I agree that you have a leak to find also but if the shaft is broken that could be the leak.
 
Using a jumper should be the answer like others have explained. If this is one of the Deere's that use the Delco compressor, it probably has a burned out safety fuse from running with low charge also. Freon, the magic word used to cover all refrigerants. I believe Dupont has trademark rights on it for R12, not real sure though.
 
Actually, "Freon" destroys the ozone layer (at least in the opinion of Al Gore) so to be politically correct later refrigerants such as R134A are simply called "refrigerants".

Freon is a chlorofluorocarbon and that is a no-no nowadays!
 
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