Clutch pedal noise
Clutch pedal noise
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Discussion

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
I've noticed with engine off when I press clutch there sounds like binding or a couple of small clunks, tinks and the clutch feels notchy as it's pressed down.
Any Ideas before I jack it up and grovel underneath.
Thanks

jojackson4

3,042 posts

160 months

Sunday 13th August 2017
quotequote all
It's your hip

Lube the peddle box

Steve_D

13,801 posts

281 months

Sunday 13th August 2017
quotequote all
If the noise is at the gearbox then it could be the lever arm pivot.
The fulcrum point of the release lever is a socket sitting on a ball. This ball wears through the lever and will eventually fail completely.
If it is this then you may have to live with it until it fails or you have the gearbox off for another reason.

Steve

N7GTX

8,260 posts

166 months

Sunday 13th August 2017
quotequote all
Could be any of the above Al, but also one of the 'fingers' (springs) on the pressure plate is broken?

phillpot

17,448 posts

206 months

Sunday 13th August 2017
quotequote all


knackered release bearing?

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
It's defo in the pedal operation or so it feels, would a broken finger make noise with clutch pressed down as when engines running pedal feels normal.
Engine off it's like I'm catching something on the way down, doesn't do it on the way up.

It's gonna be one of the things mentioned above I'm sure.
Feels stiff, clutch action down defo feels like it needs lube.
Hmm.

N7GTX

8,260 posts

166 months

Sunday 13th August 2017
quotequote all
A broken finger probably wont be obvious or even detectable with the engine running. But, if the clutch is heavy or heavier than normal this can indicate the fingers have become hardened due to heat and wear and tear. You should be able to see the pressure plate with the rubber bung removed.

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
N7GTX said:
A broken finger probably wont be obvious or even detectable with the engine running. But, if the clutch is heavy or heavier than normal this can indicate the fingers have become hardened due to heat and wear and tear. You should be able to see the pressure plate with the rubber bung removed.
Cheers Iain.
Clutch feels about the same to use, no discernible difference in bite or anything like that.
Would it be more likely to slip under full power with a broken finger.

I'll take a peak. Bummer.

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
jojackson4 said:
It's your hip

Lube the peddle box
yes to both biggrin

Cheers budd. thumbup

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
Steve_D said:
If the noise is at the gearbox then it could be the lever arm pivot.
The fulcrum point of the release lever is a socket sitting on a ball. This ball wears through the lever and will eventually fail completely.
If it is this then you may have to live with it until it fails or you have the gearbox off for another reason.

Steve
Hi Steve

Would this mean a new lever or is a repair possible.
Thanks Al

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
phillpot said:
knackered release bearing?
The action is fine but I'm sure I've seen pics of a release bearing that's been damaged via the lever arm?
It doesn't do it on the way up so I think I'll start with pedal box and work on from there.
Thanks.

Steve_D

13,801 posts

281 months

Sunday 13th August 2017
quotequote all
Classic Chim said:
Hi Steve

Would this mean a new lever or is a repair possible.
Thanks Al
If it has worn badly then a new lever (not too expensive).
Any time we have a 'box out we weld a plate across the back of the lever to reinforce it.

Steve

Classic Chim

Original Poster:

12,424 posts

172 months

Sunday 13th August 2017
quotequote all
Classy Steve wink

jojackson4

3,042 posts

160 months

Monday 14th August 2017
quotequote all
Classic Chim said:
jojackson4 said:
It's your hip

Lube the peddle box
yes to both biggrin

Cheers budd. thumbup
Mine makes a creck and grone
A good blast with the WD40 sorts it

Sardonicus

19,313 posts

244 months

Monday 14th August 2017
quotequote all
Get someone to dip the clutch while your underneath whilst touching the release arm if the noise drones through your digits then suspect a failing release arm/fork frown obviously in a place that said digits dont get trapped but you know this already hehe

Classic Chim

Original Poster:

12,424 posts

172 months

Monday 14th August 2017
quotequote all
Sardonicus said:
Get someone to dip the clutch while your underneath whilst touching the release arm if the noise drones through your digits then suspect a failing release arm/fork frown obviously in a place that said digits dont get trapped but you know this already hehe
It's not the pedal box.
Took out inspection bung and indeed the clunk/ crunch is emitting from the release bearing of arm area.
It only does this with engine off.
I've done exactly as you've just mentioned Simon lol and used number one Grandson to depress clutch as I have my arm in a precarious place. No noise and no binding with engine running. No broken fingers on pressure plate so I'm suspecting release bearing/ pivot arm!




Edited by Classic Chim on Monday 14th August 21:48

Sardonicus

19,313 posts

244 months

Monday 14th August 2017
quotequote all
Classic Chim said:
Sardonicus said:
Get someone to dip the clutch while your underneath whilst touching the release arm if the noise drones through your digits then suspect a failing release arm/fork frown obviously in a place that said digits dont get trapped but you know this already hehe
It's not the pedal box.
Took out inspection bung and indeed the clunk/ crunch is emitting from the release bearing of arm area.
It only does this with engine off.
I've done exactly as you've just mentioned Simon lol and used number one Grandson to depress clutch as I have my arm in a precarious place. No noise and no binding with engine running. No broken fingers on pressure plate so I'm suspecting release bearing/ pivot arm!




Edited by Classic Chim on Monday 14th August 21:48
Alun I was referring to the gearbox/bellhousing end scratchchin but eng not running obviously via the big hole in the BH

Classic Chim

Original Poster:

12,424 posts

172 months

Tuesday 15th August 2017
quotequote all
Yes Simon, that's where I put my hand yikes
Rather impressively or so I thought, my big rubber bung in the gearbox BH has Tvr embedded in it. hehe
So I removed that and with a torch and helper pressing clutch on my command I watched the fork arm operation and the release bearing/ piston/ plunger( is what it looks like ) press onto and push pressure plate. All fingers look and feel intact.

With engine off and hand resting on top of release bearing when clutch goes down a clunk/ tick crunch grind can be heard and felt directly at the release bearing.

So started engine and used torch to see gearbox shaft spinning etc, carefully put my hand up there and pressed it against fork arm and when clutch was pressed just a smooth operation.


Is there a schematic drawing somewhere of the clutch and release bearing/ fork arm assembly so I can work it out. I've not done anything on the clutch myself. Slave cyl is fairly new and again felt smooth. I can see what looks like a piston with cut outs in it, i presume that's what the fork engages and pushes release bearing forward. I'll try and find more reading material scratchchin

Edited by Classic Chim on Tuesday 15th August 00:13

Classic Chim

Original Poster:

12,424 posts

172 months

Tuesday 15th August 2017
quotequote all
Ok I'll come clean,, the housing is full of clutch plate dust. Clutch is two years old and fabulous to use.
That dust must be me trying to set personal records. 12.604... it was worth it biggrin