The throwout bearing on my 1988 Fiero started making noise. Its a V6 with the Getrag tranny. We purchased a new LUK Clutch kit number 04-088. It came with the clutch, pp, and throwout bearing. We removed the engine/trans cradle and removed the tranny. The throwout bearing was toast and bearings sitting in the bottom of the bellhousing. We cleaned the dust and grime and put on the new bearing.

It didn't fit as well as it should have. Actually, we should have stopped and questioned it, but we went ahead and put it back in and started it up. After a 1 mile drive, it started making noise. If you push the clutch in, the noise would go away. The pushrod at the slave, and the arm are shaking in and out slightly. The noise goes away when you push in the pedal.

We will pull the rear again and see what happened, but after looking at a picture I found pictures (7th picture down), I think the throwout bearing has the wrong I.D. The inside diameter of the new bearing was sloppy on the shaft of the tranny. Maybe we got the wrong part in the kit, or it was for an earlier year?

Also, we had the flywheel surfaced. Today I read a few places that say not to have the flywheel surfaced and to just replace it. Is that true also?

I am 17 and appreciate the help from more folks experienced in these unique cars. Thank you.

[This message has been edited by 88Formula94 (edited 07-13-2012).]

I had a Fiero Store kit for my transmission overhaul. I also had a shop do the work.( Pulling a getrag out of a Fiero in my driveway on my back wasn't something I really wanted to do) The guys ordered a new flywheel, BUT the 86 and 87 have a balanced flywheel, but they were sent an 88 neutrally balanced flywheel. That don't work. No real part # for the 87 flywheel was found. The shop had the flywheel resurfaced and a shim was made for the amount taken off the flywheel.

So depending on what year engine you have will depend on what flywheel you'll need. As long as you don't have a badly screwed up flywheel I do not see why it can't be resurfaced.

Make sure the sleeve on the input shaft bearing is still there (as shown in the picture). If missing, that would make the throw-out bearing flop around.

Thank you for the reply. The machine shop said they had to make three passes to get it flat. I think your right, if you don't put a shim to move it back to the original location the pedal/pushrod/throwout bearing/ pressure plate will have further to travel. I don't know how much that would be now that the metal has already been removed.

We are discussing where the throwout bearing slides on. There was no retainer on the shaft. I am wondering if it was put in the garbage when we picked up the old broken input shaft bushing? Is it called the sliding sleeve bushing? I am thinking that it should have stayed with the tranny, but was thrown out? Just not sure. I know its not on there and in fact I remember seeing a seal where a input shaft retainer would go on a 4 speed Muncie tranny.

So to recap...... The supplied TB we got with the LUK kit # 04-088 was loose and moved side to side on the input shaft. Too much so that it probably got dislodged from the fork arms.

If the retainer on the input shaft is destroyed, or thrown out like in our case, where do you get one?

Sorry, you won't find one. Check on Rodney Dickman's progress in making new ones...but the part is Unobtanium.

The only way to throw the sleeve out would be if it was loose, and that means it had broken off the bearing...(which is still in the transmission).

https://www.fiero.nl/forum/Forum2/HTML/120010.html

[This message has been edited by Gall757 (edited 07-13-2012).]

Oh, no. I go to college at the end of summer. For me its only 4 weeks away. Maybe someone will see my dilemma and have one hidden in their garage they can part with?????? We are in Seattle area if anyone has an extra or we could send some money for one.

quote Originally posted by 88Formula94: Gall757, you beat me to it. Yes, its called the bearing/ sleeve assembly that we are missing! Got to find one..... I'll call the local wrecking yard

Looks like it is there. The splines are not covered with the input shaft bearing sleeve assembly.

------------------
Rodney Dickman

Fiero Parts And Acc's Web Page:
All new web page!:www.rodneydickman.com
Rodney Dickman's Fiero accessories
7604 Treeview Drive
Caledonia, WI 53108
Phone/Fax (262) 835-9575

quote Originally posted by Rodney: Looks like it is there. The splines are not covered with the input shaft bearing sleeve assembly.

Not sure what you mean? Can you elaborate? Are you talking about picture number 7? I don't have anything covering the shaft on the tranny going from the case to the splines as far as I remember. If we had only saved the broken parts.....

I would look again also.. the input sleeve is definitely there.. check to see if its cracked at the base though
and what I think he means is the splines arent fully covered by the sleeve..but long enough to not allow any slack in the throwout bearing..

BUT if you have to do this ..

I literally just had to do a new input sleeve for my getrag.. call the fiero factory.. they sell used ones but when I got mine it was in really good shape suprisingly

although it was hefty $65 with shipping

Youll have to split the case though and for some reason mine was a pita to split apart. otherwise everything else is routine.. blacktree has a great thread somewhere here on how to do it..

while your at it..you might as well replace the axle seals and input seal with the trans apart and on the bench..

[This message has been edited by gmctyphoon1992 (edited 07-13-2012).]

Everything in those pictures looks OK to me.

------------------
Rodney Dickman

Fiero Parts And Acc's Web Page:
All new web page!:www.rodneydickman.com
Rodney Dickman's Fiero accessories
7604 Treeview Drive
Caledonia, WI 53108
Phone/Fax (262) 835-9575

My understanding is that those pictures aren't his. He just provided them as an example.

OK. Then he probably needs a input shaft bearing/sleeve. I should have mine soon but it will still be more than a few weeks yet.

------------------
Rodney Dickman

Fiero Parts And Acc's Web Page:
All new web page!:www.rodneydickman.com
Rodney Dickman's Fiero accessories
7604 Treeview Drive
Caledonia, WI 53108
Phone/Fax (262) 835-9575