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Clutch Stickiness ONLY after medium-hard right turns.

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OllieVRS:
Hi all, been spewing out posts on here recently but there just seems to be so much going on with the car right now.

One of those things is the clutch pedal stickiness, most noticeable after accelerating harshly in 3rd and shifting up to 4th. Sticks for ~0.3 seconds, doesn't affect driving as it's already in gear when this happens, but sours the driving experience.

As the title says, put in a single shim 1000km ago and the clutch pedal became absolutely perfect. Now it's back to its old ways.  :sad1:

I ordered three shims expecting there to be more play than there was, but only one was required to nearly eradicate all play from the bearing.

Here's a video from when I installed the shim kit. All seemed well, right?:




To investigate this again would require getting another end cap since they get destroyed when you remove them. I want to check I've not overlooked anything before going down that route, what else could it be?

Also will taking the end cap off for a second time cause enough gearbox oil to be lost to warrant topping it up/replacing it?

Cheers

GreigC:
I use to own an Audi S4 B5. When driving hard the clutch pedal use to go really hard for a split second then back to normal…. (At times I could hear the fluid) Sometimes the pedal would go hard with normal driving but usually spirited driving caused it nearly every time. Now after replacing everything you can name in that gearbox… I won’t bore you with what was changed but it turned out to be a hydraulic line that had a one way valve inside it that was not allowing fluid to pass at times. It was collapsing inside itself under pressure. When driving it could nearly lift me off my seat when the pedal went solid… literally went hard for half a second. Although your issue may be completely different but reminded me of my issue back in the day.

pudding:
Yeah upgrading to a braided line would be a good move as it also removes the stupid damper aka 'clutch delay valve'.  Sometimes just running fresh fluid through the line helps as it gets pretty black and grimey at the clutch end compared to the brakes for some reason.

I always did think VW not using a taper roller bearing on the input shaft to counter the thrust loadings of helical gears forcing each other apart, but VW eh? Crazy fools.

You need a good deal more force than a finger to gauge the real play, but if it's around 0.5mm as far as you could tell, that's about right.  When I fitted my MK6 gearbox, I ended up using custom shims to remove all play completely.  Even those boxes have more end float than I'd like.

If it's not excessive end float on the gearbox input shaft, the only other thing that can cause clutch pedals to behave like that is too much crank end float.

Having said that, where you changing gear at like, 6000+rpm? These boxes are notorious for not liking high rpm shifts, so could just be that.  The braided line helps with that also.

HughOR:
@Ollie - where did you get the shim kit? I think you are in RoI too? I've only seen them on UK sites and Brexit taxes etc...
Sorry cant help with original topic !

OllieVRS:

--- Quote from: HughOR on July 17, 2023, 09:44:28 am ---@Ollie - where did you get the shim kit? I think you are in RoI too? I've only seen them on UK sites and Brexit taxes etc...
Sorry cant help with original topic !

--- End quote ---

Technically it wasn't a kit. I ordered the shims desperately and the end cap on skoda-parts.com. But call your local VW dealer for parts, they might have them. You will need to measure your gearbox end cap diameter beforehand.

The shims are always WHT 001 976.

The end cap on my gearbox was 79mm, so I got 02M 301 211 B. But there is also an 83mm end cap in case yours is that size.

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