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Over the road a/c

Yahoo Message Number: 69510
The freon in my OTR system has now leaked out for the third time since I picked uyp my new coach almost 3 years ago -- all 3 times were quite slow and extended over about 3-6 months with a corresponding gradual drop in cooling capacity until the pressure was to low and it just stopped the compressor from coming on. The repair shop has put dye it in twice now and we have been unable to find any obviouis leaks. I have also run the a/c at least every month to try to prevent seal leakage etc. We believe the leakage is likely in the compressor but before I proceed I thought I'd ask the group for any thoughts or counsel or perhaps similar issues out there.

Thanks,

Eric

2008 Intigue 530 with CAT 525

Re: Over the road a/c

Reply #1 –
Yahoo Message Number: 69511
Compressor seal leaks are very easy to spot with dye. Get educated on how to add yourself and do so. Easy to do with gauge set. Books are easy to find online. Cheap gauge sets at Harbor Freight. Top off each spring. Cheap enough to live with small leak. If dye is not found at any connections or any coils then finding it could be very costly. This is what we do with the same issue on our 97 Magna.

Leonard

Re: Over the road a/c

Reply #2 –
Yahoo Message Number: 69515
Eric,

I had a similar slow leak for 3 or 4 years. I was able to keep it cooling by adding 134a periodically. I finally took the coach to a good service facility who found leaks at both high and low side hose crimps right at the compressor.

Good luck

George in Birmingham
'04 Allure 31038
George in Birmingham
2003 Magna 6298

Re: Over the road a/c

Reply #4 –
Yahoo Message Number: 69594
Eric,

I went through a 3 year nightmare with this due to a number of incompetent techs. A good one spotted it in a few minutes: the fittings at the condenser on the radiator. Look for a little bit of oil there. These get subjected to lots of heat and vibration.

Rich 2002 Magna

Re: Over the road a/c

Reply #5 –
Yahoo Message Number: 69634
Mine was the same as George's. Leak at a hose crimp at compressor. Found after four years, many refills, and many $$$$ in service.

Bob Mussman

2006 Allure 31434

Re: Over the road a/c

Reply #6 –
Yahoo Message Number: 69635
I had the same slow leak at the compressor the hose to the condenser was replaced after several fitting changes at the compressor BOB 06 intrigue 12047