Home » Public Forums » GMCnet » Dead AC Compressor?
| Dead AC Compressor? [message #83832] |
Sun, 09 May 2010 19:58  |
Rick Denney
Messages: 430
Registered: January 2004
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So, while dealing with the leaking thermostat housing, I had to get under the coach to drain the radiator down a bit. While down there, I noticed oily drippage on the lower tranny cooling line. I just replaced those lines with stainless lines about a year ago, so I wasn't happy to see that. But I could find no evidence of leakage at the flare fitting into the radiator. The lower radiator hose was also wet with oily stuff, but the upper tranny line wasn't.
I poked a flashlight up into the engine compartment from below, and the oil is dripping from the bottom of the AC pulley. Up above that, everything is dry. This is coming from the front of the compressor.
Of course, I just installed all new AC componentry within the last coupla years. The compressor was set up for R134, and I used green O-rings on everything, installing new hoses, expansion valve, and dryer. I cleaned out both coils, so everything was pretty clean. I filled the rebuilt compressor (Four Seasons) with supposedly the right amount of ester oil, which is compatible with both R12 and R134, and then vacuumed it down thoroughly and charged it with HC12a. It has been working fine since then except for one mysterious fuse-blowing incident early on that has never repeated itself.
The driveway indicates that the oil drippage has been slow, but it has been going on for a while. I had seen the evidence on the gravel for months, but thought it was left over from the last time I put oil in the engine when I had some spillage. I have to rake my gravel a lot to get rid of that evidence.
So, have I lost the front seal on the compressor? Is this a sign of having used the wrong amount of oil, or is it just a cheap-crap rebuild?
If the compressor is leaking, then I'll have to replace it, of course. How easy is it to replace it with a Sanden? (My definition of easy: Uses the same bracket, hoses, and requires no custom fabriation that I can't do myself--and someone knows the necessary part numbers to make it easy). If not, where does one buy a NEW A6 compressor?
Rick "getting TIRED of doing the same things over and over and over" Denney
'73 Glacier 230 "Jaws"
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