A/C compressor rebuild

**NuGeN** · 27-09-2007, 09:52 AM

Hi guys,

I was wondering if anyone here has ever rebuild an air con compressor?

I've heard its difficult to get it sealing again properly.

I am currently contemplating this option as summer is approaching and I am having a hard time finding a replacement.

Cheers.

**Dale** · 27-09-2007, 02:00 PM

Keen to hear about this as well, auto electricians wanted $250 to replace the shaft seal.. I'm sure I could at least dismantle it myself and save some money

**o_man_ra23** · 27-09-2007, 04:24 PM

It may be a case of the shaft needing to be metalsprayed and machined as the seals cut into the shafts over time. Common problem for tailshaft yokes and crankshafts, so I cant see why AC compressors would be special.

Also interested in this, might have a chat to a local AC mob and find out before I install the AC into my RA28.

What motor is this AC for??

**Dale** · 27-09-2007, 04:48 PM

Well mine's for a 3s, so nothing special.. not sure about nugen

**NuGeN** · 27-09-2007, 08:24 PM

Mine's a smallport 4a-ge compressor. I think its leaking out the sides though. Not the front shaft seal.

Oh and I think the clutch is gone too.

**Dale** · 28-09-2007, 12:08 AM

I found this how to for rebuilding a nippon compressor for a porche 911? Anyway being a nippon I'd imagine it would be pretty similar to any that are found on a toyota

http://www.pelicanparts.com/techarti...so_rebuild.htm

**allencr** · 28-09-2007, 08:27 AM

It's beyond the capabilities of most parts changers, and the second one you work on will greatly benefit from your learning curve. It ain't rocket science, and usually there aren't any special tools except for the clutch on some.

**terryo** · 28-09-2007, 08:07 PM

they are easy to take apart but near impossible to get them to seal. the end case o rings often leak from case distortion. The main shaft is often stuffed and replacement is cheaper than repair. The clutch face is often stuffed requiring machining. At work we sell new and rebuilt compressors for most Toyotas . The hardest part is testing them once overhauled. PM me with the denso part numbers off the compressor if you want something specific.

**NuGeN** · 28-09-2007, 08:59 PM

Originally Posted by terryo

they are easy to take apart but near impossible to get them to seal. the end case o rings often leak from case distortion. The main shaft is often stuffed and replacement is cheaper than repair. The clutch face is often stuffed requiring machining. At work we sell new and rebuilt compressors for most Toyotas . The hardest part is testing them once overhauled. PM me with the denso part numbers off the compressor if you want something specific.

That's exactly what I've heard...
The compressor's still in the car at the moment. So I don't have the part number.
What kind of prices would I be looking at for a rebuilt one ?

**Dale** · 16-10-2007, 05:03 PM

Looked more into this this afternoon, got the clutch off and opened the compressor (it's a spare one I have lying around)... it's obvious to me that the shaft seal is stuffed and replacement looks pretty simple, but where would I be able to order these parts from?