850 Hydraulic clutch issue, the return

[manovlov]

Hy Guys,

For an unknown reason I can't open my first topic having the same name... Mysteries of electronic... so. The seal inside the salve cylinder has been pushed out so strongly that it has be cut. So, does some could find me the reference or the website where I could by a new one ?

I will post a video of the fork, it moves to much up and down to me...

Capture d’écran 2020-11-21 à 12.40.03.png (117.35 KiB) Viewed 950 times

The fork and clutch : I think the piston doesn't't go far enough for the first try I need to bleed brakes at first.



Bleeding the salve cylinder :lot of extra small bubbles. Does it come from the slave cylinder bleed that lets air come in because a little unscrewed ?


Manov

[abscate]

That air is coming from the system, not bleeder screw leakage. That needs to be found amd fixed, that clutch won’t work well until that’s put right.

If you link to the old thread I can merge them, Merci.

[manovlov]

Yo !

I can't find the other topic, unable to open it...

Clutch :

Hoses are news, good ones and well fixed, master cylinder, slave cylinder, pedal cylinder are new and well fixed too.So I don't see where I could have done a error (which is always possible anyway, you're right).

I've tested the pedal and it works. The car has been brought to the garage to do the inner tie rods. I've asked my friend to control the clutch because I think the fork is moving up-down too much to my mind. If he has to get down the gearbox, doesn't matter, because with my studies I haven't got the time to do it, and don't know how to do it, and it's going to snow quickly around here. Work a task I have no idea, under snow...

So, to accept to not win at each time is also a victory... Volvo 1 - Manov 0


I've bleeded the slave cylinder with the brake pedal, no bubbles anymore.

[Chuck W]

OK, first.

Don't bleed the clutch on these with the brake pedal. Do the reverse bleed I have mentioned a couple times with a syringe. That will get ALL of the air out of the clutch system. It took 10 minutes to fully bleed the system and I haven't touched since and have full travel with no spongy pedal.


Second. The slave cylinder looks over-extended in your video of it in action. The only real cause for this could be a VERY worn clutch, or that bushing on the clutch fork pivot ball is broken or missing.

Unfortunately that is going to require dropping the transmission to investigate/fix.

[Chuck W]

You can't find the old topic, or can't open it? Which is it?

It's HERE if you can't find it.

[manovlov]

Hy Chuck

Thanks for advices. The brake pedal trick has been given to me by my Volvo dealer.... Each time I've tried the syringe, it didn't work, at a moment I was unable to push its piston anymore.

Yes for your analysis, I think something is broken, around the fork, it moves too much to me. And I have advised the garage to low down the gearbox if need.

The clutch has been replace with OEM in September 2019. But It may possible that the work hasn't been done seriously...

For the topic, here's what I get when i call your link...

Capture d’écran 2020-11-21 à 18.38.59.png (147.62 KiB) Viewed 918 times

[Chuck W]

There is no piston to push on the syringe bleed. All there is to it is to open the bleeder on the slave cylinder and let it gravity bleed for a short bit (Really only if you've had the system apart/open (such as replacing a line or cylinder). Then close the bleed screw and attach a syringe full of fluid. Open the bleed screw and force the fluid into the system through the bleeder. That will force the air bubbles back up through the system and out through the reservoir. If you can't push the syringe at all, the bleeder is not open enough. There should be no resistance when doing this portion.
I suppose it's the same idea as bleeding the clutch with the brake, but why crack open the brake system if you don't need to?


As far as your old topic goes, it's on page 2 of the forum. Not sure why you're getting that error.

[manovlov]

Hy Chuck,

Thanks for follow me and my topic. I have follow your advice with the syringe. I've managed to introduce more than 2/3 of its "content",I did it slowly, but at a moment I was unable to push it more.

Before to bleed the SC purger, I've bleed my brakes, and watched out to never get under the low level reservoir mark with the Dot. So , I hope that I've done the job has it should have been. The car is able to cross the street to be parked at the garage. I will have more information during the week.

Thanks again, to feel involved in my issue.

Manov

[Chuck W]

Was the reservoir cap open when you were trying to feed fluid with the syringe? Might've been a pressure issue with it closed.

Hope you can get it sorted out soon.

[manovlov]

It possible, I was so stressed... When I think about your question, I feel suddenly so stupid to be honest... Today, it was open.

Manov