T90 Throwout Bearing Fit and Installation

Today I tried to install my T90 and D18 combo today and it just wasn't happening. To start things off, I ordered a new Luk clutch kit with new throwout bearing, pressure plate, etc. I have the AA kit on my T90 and the throw out bearing didn't want to go on right. I started to tap it on but that can't be right.


Is the AA input shaft sleeve bigger than the stock?

Are there any tips on getting the damn input shaft perfectly in the clutch?

Thanks
Lance

 

anything?

 

So did you get the AA kit product #712502? I looked this one up and it makes no mention of a throw-out bearing included in the kit. The bearing retainer is special to the kit. The original T-90 bearing retainer has a 1.37" diameter shank for the throw-out to slide on. What dia. does AA use?

 

The throwout bearing came with the luk clutch kit. I just found my original input shaft sleeve. I'm going to compare diameters today. I was just curious how tight the fit is between the sleeve and the throwout bearing. New to all this stuff.

 

The throw-out bearing should slide on with ease and that is with a light smear of grease on the retainer shank. There should be a slight amount of clearance between the T-O and the surface it slides on. Also what is the input shaft stick-out length from the face of the adapter to the end of the shaft?

 

Offy adapter used factory short 4 bolt GM bearing retainer, bolted to adapter.
You then used the V6 stock (GM) TO bearing depending on pressure plate fingers.
I don't know what AA specifies with their kit, seems you would want to use the V6 (GM) bearing, not a special AA bearing.
If the LUK clutch kit came with the correct T/O bearing for V6 it should work; it did for me anyway.

 

Yes I agree with jpflat2a on the T/O. The AA retainer (what I call a hard part) should be made to fit a replacement part that is standard to the 225V6 clutch parts. AA knows that the T/O comes with most clutch kits by design to enhance the operation of their clutch kits. It may be that AA put the wrong retainer with your order.

 

OD of the stock sleeve is 1 7/16" but the stock one I pulled of the tranny is 1/16-2/16 bigger in diameter than the AA. The T-O bearing has an ID of 1 3/8". Should I contact AA? Have my retainer shaved down at the machine shop?

Here is a pic of the stock next to the AA

 

Not sure what I am seeing in this picture? The old retainer, either has the part the T/O slides on broken off or it is stuffed inside the AA retainer. Which is it? The ID of the T/O 1-3/8" or 1.37" is the correct size for the stock T-90 bearing retainer.

 

What you're seeing in the picture is the t90>adapter>aa input sleeve>original input sleeve slid over the exposed part of the shaft for reference. I ordered a new bearing from AA. It has the correct ID however I don't believe the length is correct. I will post some pictures later.

 

Well nearly 2-1/2 years passed on this one so I figured you had finally gotten it right and together! Pic's would be great..

 

T90>Advanced Adapter>225 V6

Long story short. Installed everything. Clutch would never engage. Diagnosed the problem to the throw out bearing never making even touching the pressure plate diaphragm. See pic below. The new bearing I received today goes on the shaft but you have to force it. Something does not have the right tolerance.... Any advice on how to move forward? Novak's adjustable TO bearing is on back order with 2 month lead time. The machine they use to make them is broken. They can sub contract it out but it will be around $200.






Broke out the dial caliper
INPUT SLEEVE OD: 1.3750"

TO BEARING WITH CLUTCH KIT: (Incorrect ID, Correct length)
ID:1.3770" LENGTH: 1.5635"

TO BEARING ADVANCE ADAPTER: (Correct ID, Incorrect length)
ID:1.3830" LENGTH: 1.2105"

TO BEARING SUMMIT: (Incorrect ID, Better length)
ID: 1.3770" LENGTH: 1.425"


NEW SUMMIT > CLUTCH KIT > Advance Adapter

 

You're using diaphragm clutch with diaphragm t/o bearing, correct ?
Other than that, it's call AA and find out why their crap doesn't work
sorry, that's all I got for you.

 

Yes, diaphragm clutch with diaphragm to bearing. I ordered an adjustable pivot ball from Novak. I'm going to do all the measurements from their (Novak) site regarding clutch travel. I won't do business with AA again. Really would like to machine the bearing retainer sleeve down properly. The threads were crap in the AA adapter. If I have to take that adapter off I will have to drill and tap those holes.

 

Is this what your looking for?..........This is a New Novak adjustable 1.375" ID spare throughout bearing from another Project. PM me if you have interest.

 

Yes, that's it. Can you measure the ID with a dial caliper?