pilot bearing seized on input shaft

[RPSil13]

Has anyone had this problem? i searched but came up empty.

did a 5spd swap recently, had a noise issue so i pulled the trans off again but the pilot bearing was stuck on the trans input shaft :aigo:

what would have caused this?

also anyone know why the tsrm is down??

 

[IBoughtASupra]

The pilot bearing is the bearing that goes inside of the crankshaft. The throwout bearing is the one that is on the input shaft. So, if the one that is on the crank is stuck on the input shaft, then maybe it was the wrong one, slightly smaller, and there was no grease on the input shaft when reinstalling the gearbox.

 

[GrimJack]

Is the bearing seized? Or is the inner race just stuck on the input shaft?

 

[RPSil13]

Is the bearing seized? Or is the inner race just stuck on the input shaft?

inner race is stuck on the input shaft

 

[GrimJack]

Well, that tosses out my theory!

 

[mkiiichip]

Failed bearing creating heat and corrosion?
Cheap pilot bearing?
Damaged (mushroomed) input shaft?

Could be many reasons that could happen.
Was the bearing new when you did the swap?

 

[Poodles]

No grease upon installation...

 

[hvyman]

Ive seen 3 r154's that have a little lip in the very front of the input shaft from the bearing. I would just sand it down a little if you can and some pb blaster it might come off.

 

[RPSil13]

Well, that tosses out my theory!

i should have clarified,the whole pilot bearing was stuck on input shaft

Failed bearing creating heat and corrosion?
Cheap pilot bearing?
Damaged (mushroomed) input shaft?

Could be many reasons that could happen.
Was the bearing new when you did the swap?

swap was done 2 months ago, drove for maybe 150 miles, new pilot bearing from toyota

No grease upon installation...

i searched and everything said not to grease the pilot bearing,

Ive seen 3 r154's that have a little lip in the very front of the input shaft from the bearing. I would just sand it down a little if you can and some pb blaster it might come off.

will try this when i replace it tomorrow.

 

[hvyman]

I just throw a tiny bit of grease on the input shaft. Dont grease the bearing at all tho as its lube is self contained.

 

[Poodles]

I just throw a tiny bit of grease on the input shaft. Dont grease the bearing at all tho as its lube is self contained.

Yep, not covered in the TSRM, but after going through the exact issue myself, I put a very thin coating of grease on the tip. I couldn't get the transmission to seperate from the motor, was hung on the pilot bearing, and it didn't want to reinstall either.

 

[bioskyline]

+1 on that, i always grease the shaft and the splines to for install. makes it slide togther much easier, and also come apart easier later on.