80 series Replacing air cond compressor bearings?

Post by **bruiser** » Thu Sep 18, 2008 9:24 pm

My air con compressor is making a noise.
The bearings are shot.
What is involved in replacing these

Post by **flyology** » Fri Sep 19, 2008 1:02 am

Talk to this bloke, he is great, helped me heaps with my 60 series. You can send yours to him to be repaired, get a new one, or maybe he can tell you what needs to be done.

http://www.allautoaircompressors.com.au/index.html

If it is the bearing it is located behind the clutch. pretty easy to do if you have basic tools and a bit of mechanical knowledge.

Will try and post a pic or two of a denso 10Pa which is what you probably have or very similar.

Post by **bruiser** » Sun Sep 21, 2008 6:44 am

Pretty sure it is just the one behind the clutch.
How do I get to this.
I took the bolt out of the centre of the pully and it still did not seem to want to come off.???

Post by **stock 4runner** » Sun Sep 21, 2008 7:47 am

there is normally a circlip as well

Post by **bruiser** » Sun Sep 21, 2008 8:02 am

on the tensioner pully the circlip only holds the bearing into the pully.
(not the pully onto the shaft)
I can't even get the pully off.
Can anyone verify that there is a circlip holding the pully on.
I cant see shit down there. Its so close to the fan and radiator.

Post by **flyology** » Sun Sep 21, 2008 3:39 pm

what stage are you at? do you have the front part of the clutch off?

when you have the nut or bolt off (depending on what model compressor you have) take the front of the clutch off, this is the part that is pulled in against the pulley when the a/c is on. This part can be a bitch to get off, be careful you dont damage it, slowly work it off with two screw drivers.

when you have that off, it will look similar to this, arrow is where the circlip should be (it is off in this pic, and the circlip in this pic holds the bearing in to the clutch, not on to the housing)

next picture shows the compressor after the second half of the clutch has been removed and the groove the circlip sits in:

this pic is of the second half of the clutch removed, showing the bearing that needs to be replaced.

hope this helps, if you need more pics let me know.

Post by **bruiser** » Mon Sep 22, 2008 7:18 pm

Thanks heaps for that.
the front pully/clutch is still on.

Last atempt was on the weekend. I got the nut off and expected the pully/clutch to come off realy easy. It didn't although I didn't try that hard as I though something else must be holding it on.
Will have another attempt this weekend.

Mine is still on the car so access is not the best.

Post by **bruiser** » Thu Sep 25, 2008 9:10 am

Auto air con guy reckons that the hosing or the shaft where the bearing sits normally flogs out and that you usually have to replace the whole compressor.
What do other people think about that.

Post by **flyology** » Thu Sep 25, 2008 9:31 am

dunno about that, to damage the housing the bearing would have to be siezed and spin on it.

I have heard that 80 series onwards use a smaller bearing, which does flog out occasionally.

Have you called the bloke in Rocky?

Post by **bruiser** » Thu Sep 25, 2008 9:32 am

no not yet. Might try that now.

Post by **flyology** » Thu Sep 25, 2008 9:36 am

if you can replace the bearing on the car (if that is all that is wrong with) it will save quite a few dollars.

If you take the compressor off, then it means a regas, new receiver dryer, flush and vaccum if you do it properly......

Post by **dow50r** » Thu Sep 25, 2008 10:57 am

I once decided to take the pulley off my air conditioner to make a drive for an air compresser....it was such a hard job getting the bent nose inside circlip plyers in there to get the circlip out using a mirror...i ended up breaking it out and using a spare to reinstall...that was on a 1fzfe

Post by **hdj105** » Thu Sep 25, 2008 5:02 pm

bruiser wrote:Auto air con guy reckons that the hosing or the shaft where the bearing sits normally flogs out and that you usually have to replace the whole compressor.
What do other people think about that.

If you let the bearing go to far and it seizes, it will chew the alloy snout on the compressor and you'll have to throw it away.

The circlip can be tricky to get off, removing the 4 bolts from the compressor and rotating it so you can see what you're doing helps.

The other problem is getting the drive plate off once the bolt is removed, as they seize onto the shaft. Last one I did, after sparying and soaking with lubricant, was to tap a 5/16 thread (IIRC) in the front of the drive plate, then screwed a bolt into it which pushed up against the compressor shaft and pushed the plate off eventually.

Post by **bruiser** » Thu Sep 25, 2008 6:32 pm

so what is the chance of getting it off while on the vehicle.

hdj105
You talk about making it easy by rotating the compressor.
Did you have to dump the gas to do this.

Post by **hdj105** » Sat Sep 27, 2008 10:09 am

bruiser wrote: You talk about making it easy by rotating the compressor.
Did you have to dump the gas to do this.

The compressor usually has flexible hose lines to it, so no loss of gas.

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80 series Replacing air cond compressor bearings?

80 series Replacing air cond compressor bearings?

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