Fitting new slave cylinder - copper union leaking

[GR_TVR]

Hi all,

After losing the clutch the other day it was traced to be a leaking slave cylinder.
Ordered a new one from powers, arrived today so I set about fitting it!

Got the old one off, put the new one on and do everything up, then during bleeding I notice it's dripping at quite a rate (couple per second) from where the copper union from the master cylinder meets the slave.
It all screwed in nice and tight but something obviously isn't right!

Can anyone help point me in the right direction? Should there be a gasket or anything obvious I'm missing?

Annoyingly it was drivable on the small leak before - now it's worse and I won't be able to move it!

Cheers,


Gareth

[Sardonicus]

If its copper try annealing the flare sometimes they form to the old seat and are reluctant to take to a foreign/new one, explained better than I http://steamshed.com/annealing%20process.html failing that the flare may be cracked or damaged its not usually a problem in my trade TBH

[andy43]

I don't know if it'd work (brake fluid might eat it?) but maybe a bit of ptfe tape might seal it?

[GR_TVR]

Sardonicus said:

If its copper try annealing the flare sometimes they form to the old seat and are reluctant to take to a foreign/new one, explained better than I http://steamshed.com/annealing%20process.html failing that the flare may be cracked or damaged its not usually a problem in my trade TBH

Thanks for the info - learn something new every day!
I've got the tools to try the annealing so may give that a go.

Failing that I might remove the pipe and slave and take it to somewhere like Pirtek and get them to make/supply me a replacement. I see people have had some flexi style hoses made up in the past.

andy43 said:

I don't know if it'd work (brake fluid might eat it?) but maybe a bit of ptfe tape might seal it?

I did think about that actually, but noticed that the fluid seems to be leaking up the edges of the pipe rather than through the thread, so I don't think it would make any difference.

[portzi]

Had the same problem on my flared pipe. Hacksaw off the old flare and reflare?

[GR_TVR]

portzi said:

Had the same problem on my flared pipe. Hacksaw off the old flare and reflare?

How do you reflare? Not something I've done before.

[N7GTX]

You need a brake pipe flaring tool kit. Maybe borrow one from a mate or friendly garage?
Something like this one which is very cheap
https://www.amazon.co.uk/gp/product/B01M1V755W/ref...

Edited by N7GTX on Friday 5th May 08:05

[GR_TVR]

Thanks - will try ring some local garages in the morning.
Alternatively would this work? I ideally need to get this sorted tomorrow and it's in stock locally.
http://www.toolstation.com/shop/p28625?table=no

[Steve_D]

GR_TVR said:

Thanks - will try ring some local garages in the morning.
Alternatively would this work? I ideally need to get this sorted tomorrow and it's in stock locally.
http://www.toolstation.com/shop/p28625?table=no

Yes that is the tool you need. There are better versions but you should be fine with that.

Your profile does not indicate where you are. If you were local to me I could do it for you.

Steve

[GR_TVR]

Steve_D said:

Yes that is the tool you need. There are better versions but you should be fine with that.

Your profile does not indicate where you are. If you were local to me I could do it for you.

Steve

Thank you - I'm in the Towcester/Silverstone area so not local to you I don't think. I'll get my profile updated tomorrow.

Cheers

[phillpot]

GR_TVR said:

Thanks - will try ring some local garages in the morning.
Alternatively would this work?

Personally I think plan A is favourite, local garage with a decent flaring tool. That one you linked to is shyte (imho).


Is the clutch pipe 3/16 (brake pipe size) or 1/4"? I'm just up the road in Redditch, around all day tomorrow if I can help?

[lancepar]

Off topic
Phillpot......you have a PM

[GR_TVR]

phillpot said:

Personally I think plan A is favourite, local garage with a decent flaring tool. That one you linked to is shyte (imho).


Is the clutch pipe 3/16 (brake pipe size) or 1/4"? I'm just up the road in Redditch, around all day tomorrow if I can help?

I think it's larger than brake pipe size so would say 1/4".

This is me assuming that it's the bottom of the 4 pipes coming out of the inner wing? The other 3 are smaller so I assume they're brakes.
I'm going to be removing the hose soon so if someone could confirm!

Thanks for the offer, once I get the hose off I'm going to try a couple of local places and see how I get on. I'll let you know if I'm struggling!

[Sardonicus]

GR_TVR said:

phillpot said:

Personally I think plan A is favourite, local garage with a decent flaring tool. That one you linked to is shyte (imho).


Is the clutch pipe 3/16 (brake pipe size) or 1/4"? I'm just up the road in Redditch, around all day tomorrow if I can help?

I think it's larger than brake pipe size so would say 1/4".

This is me assuming that it's the bottom of the 4 pipes coming out of the inner wing? The other 3 are smaller so I assume they're brakes.
I'm going to be removing the hose soon so if someone could confirm!

Thanks for the offer, once I get the hose off I'm going to try a couple of local places and see how I get on. I'll let you know if I'm struggling!

1/4 IIRC

[GR_TVR]

All sorted.

I had to cut the copper to get the nut on the inner wing off - someone had had a go at it before and butchered it so a spanner just spun on it. Fortunately a hex socket got it off without issue once cut.
I popped to Earl's in Silverstone to enquire about a flexi hose. Had one made up for £42 - liked the idea of this since I wouldn't have to mess around with the copper again.

Pics:





If anyone needs to do the same, it's now saved on their system as "TVR Clutch flexi hose" under document number 175246 so you should just be able to quote that and they'll know what to make.
The length is perfect for my set up, I'd be tempted to ask for another inch or two on the length, as we know not all TVR's are built the same!
It also comes with a couple of copper washers in case the inner wing part didn't seat perfectly - mine seems to be fine so I haven't used them.

Gareth