Ryder5616

Hello

does the oblong/pointed end of the throw out bearing face out of the clutch fork? Sorry first time doing a clutch

Any other advice greatly appreciated.

Lube the tip of the input shaft going into the pilot bearing? Using an OEM bronze style not a roller.

thanks for any help and any tips

Oblong end of Bearing facing out of clutch fork?

Ryder5616

Any expertise much appreciated!

thanks again just want to check that the pointed end of the throw out bearing faces away from the clutch fork, thank you

R66

You have the bearing right. No oil on the bushing if it is an Oilite bushing as they have oil impregnated in them. A very light coat of grease on the input shaft housing of the transmission is optional, but something I do. Do you have the GM Service Overhaul Manual or GM Service Chassis Manual. I think both have clutch install and adjustment info in them.

Ryder5616

Thank you very much. Yes I have both but was confused on the pointed/oblong side of the throw out bearing where it slides onto the clutch fork. Wasn’t expecting that.

thank you very much for your response, most appreciated!

Ryder5616

This was the ridge, should face out like shown or in?

rich5962

I recall years ago we had discussion on here and the NCRS tech site, that those replacement bearings had that protruding "feature", and questioned what its purpose was.

We concluded that it's merely a "stop", such that after the very first revolution after startup, that the bearing will find itself located and stopped by one of two fork fingers.

Since both fingers can stop rotation, it was concluded that.....

It makes no difference where initial bearing capture location is made with respect to the fork. i.e. ...."either way".

Of course the most important assembly placement is that the flat spring tips are under the bearing lip, as you've shown in your photos.

Rich

R66

I wounder if anyone has measured the diameter of the bearing at the bulge (capture) and calculated the installed clearance between that point of the bearing and the saddle of the fork? I would be concerned about the possibility of the bearing being pushed off center if the bulge (capture) is put to the inside of the saddle. If there is no clearance issue, then either way would be fine.
But, then again, I have never used a bearing of that type and have no idea of the manufacturer's recommendation.

Sixguns

I have never seen any reference material regarding orientation of the hump, As "Rich" mentioned it is merely a stop to keep the unit from rotating on the fork during operation.
Most Throw out bearings have a recess in them to pack with grease to prevent wear as it glides along the input bearing retainer sleeve. In your picture, yours does not have such a recess visible. A thin coat of your favorite NGLI #2 on the sleeve wont hurt.

Ryder5616

Thanks for everyone’s reply. I really wanted to do my due diligence on this clutch install since I’ve never done one before.

i have the advantage of having my motor and trans out of my car. It took about 30 min of shaking/wobbling to get my trans mated up to the bell housing. It was the last 1/2” that gave me trouble. Sliding into the pilot bushing I guess. I used the alignment tool and checked the input shaft OD to pilot bearing ID and all was good, just really tight.

i can’t imagine mating the trans up to to the engine with the engine in the car, what a nightmare.- atleast it would be for me.

thanks to all

rich5962

My favorite alignment tool.....


and best to put Trans in gear and rotate both ways to "tickle" it in...lol

C2Scho

Here are a couple of pictures which may help. C.J.

Sky65

I respectfully disagree with putting grease on an Oilite bushing. As you said it is oil impregnated so oil is the lubricant not grease. I was told grease can block the pores of the bushing and reduce its natural lubrication. Made sense to me so I always just put a little smear of 30W oil on the end of the mainshaft. JMO

Tom