98 V70 manual trans clutch swap advice Topic is solved

[scot850]

I have a buddy who is needing to swap a manual clutch on a 98 V70 base. Other than a lot of time, are there any words of advice anyone can give (other than run!!).

Also, what parts should you replace other than the friction and pressure plates. I'm assuming Sachs from the likes of FCP is ok?

Thanks,

Neil.

[abscate]

Sachs makes good stuff

There is a procedure to evaluate the dual mass flywheel wear tolerance e in VIDA, ITS about a $800-900 part if you need it

[WhatAmIDoing]

Don't forget the throw out bearing. And inspect the slave cylinder for leaks.

[scot850]

Thanks for the advice guys. Much appreciated.

Throw out bearing makes sense and although I have not owned a manual trans car for close to 20 years, the throw out bearing makes sense as a 'while you are in there' part.

I have read the slave cylinder can be an issue. What tends to go wrong with them. Is it they just wear out or is it a case of the seals failing? Do you replace the whole thing for safety or can you replace the seals only? Is the slave cylinder accessible later if it appears ok now or are you best to do any work on it while the trans is out?

What is the difference between dual and single mass flywheels and what goes wrong with the dual mass? I recall issues with Porsche manual trans cars and the dual mass flywheels. Don't recall what the issues were.

How do you know if you have a dual or single mass flywheel?

Thanks,

Neil.

[WhatAmIDoing]

Thanks for the advice guys. Much appreciated.

Throw out bearing makes sense and although I have not owned a manual trans car for close to 20 years, the throw out bearing makes sense as a 'while you are in there' part.

I have read the slave cylinder can be an issue. What tends to go wrong with them. Is it they just wear out or is it a case of the seals failing? Do you replace the whole thing for safety or can you replace the seals only? Is the slave cylinder accessible later if it appears ok now or are you best to do any work on it while the trans is out?

What is the difference between dual and single mass flywheels and what goes wrong with the dual mass? I recall issues with Porsche manual trans cars and the dual mass flywheels. Don't recall what the issues were.

How do you know if you have a dual or single mass flywheel?

Thanks,

Neil.

I've seen too many people cheap out on a clutch replacement, only replace the pressure plate and clutch disk, just to have the throw out bearing go a few thousand miles later. Not worth the risk IMHO.

A new slave cylinder is less than $100. I don't know about "reconditioning" one. On 1998 models there is a split between trans with external and internal slave cylinders. If you have an external slave cylinder, I believe it can be replaced with the transmission still installed. If it's internal, better replace the slave cylinder.

Dual mass flywheels are complicated beasts. The idea is they smooth out shifts and make driving a stick less "jerky". The problem is they cannot really be resurfaced because they have to stay close to factory spec to avoid problems. Your chassis number should reveal if you have a dual or single mass flywheel. I think all models pre chassis# 459999 had single mass flywheel. Not sure though if base models ever came with dual mass flywheels from factory.

[scot850]

Thanks for the insight. Like I said, I have not done a FWD manual or auto trans pull. Last one was a RWD Volvo about 20 years ago. Those I could do blindfold then. No dual mass fly-wheels and internal slave cylinders. All much easier.

I'll send all this info with a link to my friend and he can either join in or at least gather the info he needs.

Many thanks and any further guidance/advice is always appreciated.

Neil.

[abscate]

My P2 release bearing self destructed and spat little ball bearings out into the transmission bell housing.

Minimum on this job is pressure plate. Clutch disc, release bearing and hydraulic cylinder

[scot850]

That is what I am thinking, but sometimes it is not until you get it apart you find all the horrors! Car belongs to a young guy who is the neighbor of a friend of mine. He is trying to help him as he sold him the car about a year ago.

I have linked him to the thread now so hopefully he gets the info passed on.

Thanks,

Neil.

[manovlov]

Hy buddies,

I confirm that checking the slave cylinder is the thing to do. As abscise said, it's a part of the clutch. Mine is brand new, September last year, but as a newbie, I didn't think about replace the bearing, which is silly. But less than the garage owner who didn't tell me...

Manov