A/C Pulley Bad Bearing, Getting rid of that blower sound Options

[z28barnett]

From your last post it sounds just like the pulley bearing is bad!!!!!. Most I do, the hardest part is getting the Clutch off. The pulley should just pull off but a little tap from a hammer is all that is needed. Unless it has gone farther. Putting it back on is nothing more than slipping it back on and reinstalling the C-clip. Again a very lite tap of a hammer is all that is needed. If you have to use the pulley puller/intaller for the pulley something is very wrong......

I would suggest to you leave the belt off until you are ready to change the part... These bearing's only have to lock up for a split second and the snout of the compressor is Junk. With the proper clutch puller it is a simple job on this car.

Thanks about the One Lap. It is a great event to experience tracks that I will never be back to unless One Lap goes there again. Namely Infinieon, and LVMS. It funnny how fast I can go with just the idea of racing for a goal. Some of the bigger tracks you need a big pair of balls to go fast in such a short time. One Partial lap is all you get to learn the track and then its off racing. Im happy with most of my results for my experience which bascially was a Short 2 day driving school and Nothing else ever.
But I do have some sad news about 05 One Lap Of America. I have been unable to secure the funds to run the event the way I would want to. So unless something major happens I will be on the bench for 05. Im going to get some more track days, work on the suspension to get the car where it needs to be and as always more power. Thanks John

How do you go about staking the new bearing into the pulley? Would a plain old punch work? Or do you really need the gm tool with the square pin and the 120 deg spaced punch slots.

Thanks

Z28

[Ojustracing]

You don't need the special tool from Gm. A tap from a sharp chisel is all is needed. I usually get the pulley assembly which comes with the bearing so it is just a swap. But they do list a pulley bearing for the car 15-2802,$30.43 list or the pulley number is 15-4615 $160.00 list both are delco numbers Later John


I looked at the book before making statements.

This post has been edited by Ojustracing: Nov 23 2004, 01:32 PM

[z28barnett]

You don't need the special tool from Gm. A tap from a sharp chisel is all is needed. I usually get the pulley assembly which comes with the bearing so it is just a swap. But they do list a pulley bearing for the car 15-2802,$30.43 list or the pulley number is 15-4615 $160.00 list both are delco numbers Later John


I looked at the book before making statements.

Thanks fro the info, and checking the book.

z28

[z28barnett]

I bought a A/C clutch puller / installer off of Ebay.

I am not sure it will work. I think it does have the right thread for the compressor shaft but the large nut that screws into the clutch plate may not be right.

The compressor shaft is supposed to be 9mm. I have an adapter that is close to that.

The large remove/install nut is both coarse and fine thread. Its outside diameter is coarse .9375-23.82mm, Fine 23.92mm-.9415.

It is a Big "A" Tool P/N: 17-9870. $5.99 on ebay with $5.95 shipping. It says it is for GM A/C clutches.

If it wasn't cold, dark, wet, and muddy outside. I would crawl under the car and check it out.

So far I am afraid it is too large for the clutch hub because the Shop manual says it is 22MM. But I have seen errors in the manuals.

I bought the tool as a gamble since it was pretty cheap and had a good chance of working.

Has anyone worked with this type of tool and know the inside thread on the clutch hub?

Thanks Z28

[z28barnett]

The Big "A" Tool P/N: 17-9870. $5.99 on ebay with $5.95 shipping.

It says it is for GM A/C clutches, but I tried it today.

The threaded adapter for the compressor shaft will fit.

The romoval nut that screws into the clutch will not fit. It is too large, most likely it would work with older GM compressors without metric clutch plate threads.

So FYI, sounds like a good deal but save your money.

Z28

[z28barnett]

Finished the job on the pulley and the bearing was the source of the noise.

I bought a tool from Orileys and it had a good puller tool, but the installer would not work. I had to use the Ebay tool to install the clutch plate. It was junk, but worked one time and then most of the threads pulled out.

I got everything done allright, but staking is not very easy on these bearings the staking from the factory is in about 16 places.

The bearing is such a tight fit that the staking must be mostly redundant.

The pulley was easy to remove from the compressor nose and easy to reinstall. Spent most of my time fighting the crapy tools.

I used a large vise and some large tractor sockets to press out the old bearin and press in the new one. The bearing was $20.00.

Z28