A610 CLUTCH IT'S DRIVING ME MAD

[phildini]

Can somebody help me before I loose my sanity. I am starting to give up, my A610 clutch master cylinder went last year, replaced it all good, took car to Macon as I was driving up and down the hills I felt like a “clonk” coming through the pedal, since then the gears have got worst. Could it be the slave cylinder? I thought with the slave they either work or no work. Maybe the clutch? But then again with the clutch signs of slipping or juddering would be apparent. Any suggestions would be grateful as this car is starting to drive me insane!!!

I can't think what would cause a "clonk" on the slave cylinder but if it is aging then I guess there could be a corrode part on the bore.

I suspect it is more likely related to the clutch arm. That's not part of the main clutch. It's a while since I've had one apart so I can't remember how it goes but I would start by getting someone to press the clutch down and up when you have your head stuffed in the engine bay.

I'd also try bleeding the system to see if you have any improvement.

Have you checked the linkage on the pedal ? The pin can distort or oval the hole in the pedal .

Peer down into the V of the engine. If the slave is weeping it tends to collect clutch fluid there, and being high temp stuff it doesn't evaporate quickly.

That and check the reservoir to see if it's dropped at all.

Worn whole in the pedal can do it though as Clee said - it certainly stops it from moving smoothly plus it adds more stress on the master in terms of the arm not operating true and flat.

[BIG_MVS]

Hmmm, guessing as I aint no Ed China but if it was the slave your clutch fluid would be getting lower no?

Could it be damage to the actual fork as said above? I have seen them bent before on the UN1 which has caused interesting gear changes!

When you say you have had your 610 "stripped and in bits" does this include the engine and box?

If it gets worse when hot rebleed system. Or b change fluid to silicon fantastic, i have it in mine had no clutch issues since with regard to gear chanfe when hot.

[phildini]

Have you checked the linkage on the pedal ? The pin can distort or oval the hole in the pedal .

Thanks Lee I will have a closer look, good point.

Thanks guys for the reply, I have bled the system more times that I can remember, and there is no fluid loss.

BIG MVS, The only thing that did not come out was the engine and box, even though most of the parts around it have....

I thought the fork was only a problem on GTA, as the 610 should be supa dupa reinforced.

[phildini]

Checked pedal seems ok, all nice and tight down there....DAM IT!!!

If you eliminate the impossible then what ever is left, no matter how much of a bar steward it is to get to,it is probably what’s causing the problem.
It really sounds like it’s coming from the actuating mechanism in the bellhousing. I’d give it a good coat of looking at before stripping anything out but if it is from that end, surely, you must be able to hear something at the engine end when someone presses the clutch?

my old 610 (Rottbott's now) had a sticky release bearing which over time had machined its way through the clutch fingers. That had a distinct click to it.

The fork is the same on all the UN1's, the pivot pin is beefier on the 610 I believe.

610 version on left, which replaced the GTA one from the right.

GTA one is for sale, £50 delivered?

http://homepage.ntlworld.com/s.taylor88 ... 0Forks.JPG

Just for interest, when I had my clutch done years ago by Mr Sage, he put an A610 fork arm on my GTA as he reckoned they were stronger.

[phildini]

Tonight I finally fitted my TPS engine running great now...

NOW going back to the clutch issues,I have had another look at the pedal end and discovered a very small leak on the master cylinder I have replaced this with a new one ( possibly something Dieppe had in stock for 20 years ), there is still a noticable click coming from both ends.

Question:

1) If by any chance the my car has a sticky release bearing which over time had machined its way through the clutch fingers. could it put strain throught the master cylinder and make it leak again?

2) if the spring inside the master cylinder breaks will this cause gear selection a problem?

Can somebody help me before I loose my sanity. I am starting to give up, my A610 clutch master cylinder went last year, replaced it all good, took car to Macon as I was driving up and down the hills I felt like a “clonk” coming through the pedal, since then the gears have got worst. Could it be the slave cylinder? I thought with the slave they either work or no work. Maybe the clutch? But then again with the clutch signs of slipping or juddering would be apparent. Any suggestions would be grateful as this car is starting to drive me insane!!!

My Neighbour is a Physco Analist if that helps? I met him on the train this morning and asked him to give me as sanity rating. out of 10.....he looked very concerned and told me to keep taking the tablets and injections and i'll be fine. Unfortunately he knows nothing of the complexities of clutches and their operation. Neither was he any help on Primary Solex carburettors fitted to an Atmo.

He did however make me smile and laugh so I feel well on the way to recovery.

GTA Atmo for sale ....he got straight to the cause of the mental illness

si21 Insanity a sign of genious....don't ask me I'm Mad

On a more serious note ......is the gearbox not that remote from the pedal operating it that you feel a clonk at the front of the car surely the problem is confined to the pedal box and master, but you have replaced the master...surely something it will be something simple if your feeling it through the pedal?

si21