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Case Tractors Discussion Forum

Case 1370 Air Cond.

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05-16-2018 21:54:34

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I have an AC leak on my ol 1370 and I can't find it. Any suggestions would be appreciated. I have replaced the compressor a couple of years ago,, had the condenser and evaporator checked by rad shop. put stuff with dye in it and looked with uv light. Nothin so far. Will leak down in a day so where's it going?

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05-21-2018 22:02:54

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 Re: Case 1370 Air Cond. in reply to AllanC, 05-16-2018 21:54:34  
1370Rod wins !! it appears it is the compressor. Fortunately I had a spare. Ran all this afternoon cool as a cucumber. Thanks guys.

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05-17-2018 22:12:02

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 Re: Case 1370 Air Cond. in reply to AllanC, 05-16-2018 21:54:34  
Thanks for the replies. I spent a little time on it today. I think it is the compressor... and it's not that old. well.. it may be older than I remember but I replaced it with one from Case Maybe 8 years ago now that I think about it. But i don't see any oil around the seal which puzzles me a little. Maybe it will self diagnose when I get it off,

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05-17-2018 06:02:49

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 Re: Case 1370 Air Cond. in reply to AllanC, 05-16-2018 21:54:34  
A leak that big should be easy to find. Oil circulates through the entire system so look for any sign of oil or dust collecting on the oil leak. If it is leaking that fast after you find & fix the leak I would put on a new dryer as well.

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05-17-2018 05:21:18

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 Re: Case 1370 Air Cond. in reply to AllanC, 05-16-2018 21:54:34  
Allan the most common leak on those tractors was the front crankshaft seal on the compressor, even new and reman units leaked right away. But after 40+ years anything is possible. You can normally see the leaking area by looking for dust and oil film carefully. I have serviced these units for years and have never owned a leak detector. I guess I have been lucky, Rod.

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Case Nutty 1660

05-17-2018 06:00:08

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 Re: Case 1370 Air Cond. in reply to 1370rod, 05-17-2018 05:21:18  
I seldom use mine but on the difficult ones they have saved me Rod,, I used to do 30-50 units a year in the shop,, on a leak as fast as over night I doubt I would need it to find it,, I use it on the ones that leak off in a week or more,, they are great for connection and evaporator leaks as they are difficult to find by looking or listening,, it paid back the 300 plus I gave for it in time saved ,, as I have no idea how you charge out shop time just hunting for hours for a small leak when I can go over the entire system with my detector in 15-20 min tops and have the leak or leaks found just me I guess

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Case Nutty 1660

05-17-2018 04:58:55

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 Re: Case 1370 Air Cond. in reply to AllanC, 05-16-2018 21:54:34  
I bought the whole dye/UV light systems,, Waste of money,, bought a refrigerant sniffer That works,, or at least it does for me cnt

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