Vibrating Cluch Forks

[steve faithfull]

Gents
On Tickover my clutch forks move up and down ie vertically (approx +/-3mm) , but this goes away when revs increase .
Is this just that the clutch need to bed in or is it that the gearbox or clutch is out of line ?

any thoughts welcome.

Cheers
Steve

[neil still building it]

it does sound like somethings off centre doesn't it....no easy way to verify either....i suppose the release bearings firmly attached...
neil

[wilf]

Sounds like the release bearing is off centre. In theory it should self centre.

What engine/clutch/box is this?

[steve faithfull]

Sounds like the release bearing is off centre. In theory it should self centre.

What engine/clutch/box is this?

Gents
It's a Chevy 350 with a Saginal 4 speed , Will need to check up on the exact clutch fitted ? but I know its not anything obscure - thats not the way I'm going !!

What I can't understand is why it does not continue to move up and down when I rev the engine ???

regards Steve

[wilf]

Could just be one of those things - maybe the bearing does centre at higher speeds. I think you still need to check your block/bellhousing alignment though.

[steve faithfull]

Could just be one of those things - maybe the bearing does centre at higher speeds. I think you still need to check your block/bellhousing alignment though.

Thanks gents

I will have a little play and see if any thing changes ,
I am still hoping it will help when I have got the car on the road!!!!

cheers
Steve

[mylesdw]

On all the setups I've seen the clutch release bearing slides on tube that projects from the front of the gearbox housing. This tube is not a rotating part and the release bearing can't move vertically anything like you mention. This only leaves the clutch forks themselves free to move as describe; maybe they are just vibrating at tickover. Have you tried grabbing hold of the clutch fork to see if it stops?