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noisy throw out bearing
cnfabo - April 18th, 2010 at 10:28 PM

i think my throw out bearing is on its way out again :(.

its sometimes got a quite noise when im daily driving, only when clutch in. but today after a sprint event it got realy noisy. but if i have the clutch in then pick the revs up a bit the noise goes away.. any ideas ???

i have a 2 day event in 3 weeks so i want to know if i should replace it before then....

68AutoBug - April 18th, 2010 at 10:34 PM

YES

I would replace it....

some early thrust bearings were the solid carbon type

when the carbon wore down to the metal....

it became very noisy... and hot.. and will fail at some time..

If its a ball bearing type thrust race then its worn out and dry
and can disintergrate at any time...

so You need a thrust bearing... pilot bearing... and front engine oil seal...

Normally, a new complete clutch kit would be installed if a garage is doing the job... including a new cable..

If You are doing the job.. just the above bits will keep You going..

cheers

LEE

vw54 - April 19th, 2010 at 07:17 AM

yes pull theengine and replace and check the clutch and rear oil seal while your there and engine mounts as well

cnfabo - April 19th, 2010 at 09:27 AM

okay i pull it out and replace them, the fork is a HD type so that should be sweet....

do u mean the seal in the beelhousing? not the one behind the flywheel.please say no to that one.....

a freind gave me a sachs T/O bearing, said they are a good type?? it looks better then the last one i put in...

thanks boys

vw54 - April 19th, 2010 at 09:36 AM

check both seal for leaks will save you pulling enegine a second time

Joel - April 19th, 2010 at 12:42 PM

Quote:
Originally posted by cnfabo

do u mean the seal in the beelhousing? not the one behind the flywheel.please say no to that one.....




the seal on the input shaft of the gearbox
i think its on page 7 of my subi conversion thread theres pics from when i replaced mine

what gearbox/engine combo do you have? cos theres 2 kinds of throwout bearings and they're not interchangable

the swap happend in 71, newer ones have the guide sleeve bolted to the bellhousing

66brm - April 19th, 2010 at 12:48 PM

Gentlemen, remember your clutch theory, its the spigot bearing making the noise, as its only active when the pedal is depressed

cnfabo - April 19th, 2010 at 04:38 PM

sooo new gland nut ?? do i have to check flywheel end play if im replacing the gland nut

68AutoBug - April 19th, 2010 at 05:21 PM

Quote:
Originally posted by cnfabo
okay i pull it out and replace them, the fork is a HD type so that should be sweet....

do u mean the seal in the beelhousing? not the one behind the flywheel.please say no to that one.....

a freind gave me a sachs T/O bearing, said they are a good type??
it looks better then the last one i put in...

thanks boys


Hi
Fischal & Sachs used to make all VW clutch parts...

Good German quality...

the spigot bearing PLUS the clutch thrust bearing are both turning when You have the clutch pedal pushed in..

You could replace the gearbox seal then...

Gland Nut could be a problem without the tools... lol

spigot bearing is the cheapest part... lol

LEE

cnfabo - April 19th, 2010 at 08:34 PM

before i started to pull my carbs and wiring off tonight, i decided to start it up and depress the clutch, and what, no noise.. exact same symptoms as last time i raced.. noisy after the race and the drive home... strange one...

if its the throw out bearing again, why would it only of lasted 1000kms....last time it happened i also turned the diagram inside out on my pressure plate, which caused slipping... but now i have a lot more freeplay in the peddle...

cnfabo - April 21st, 2010 at 08:55 PM

how the hell do i get the spigot bearing out....and in...

vw54 - April 21st, 2010 at 09:56 PM

the welds on the clutch fork may have broken or the old pressure plate may b buggared

did u check the clutch free play and adjust