Clutch master cylinder - replace or not?

[trikey]

You can use a 6mm PCL air fitting to connect the pipes, don't try with hot water, its nylon and doesn't melt until 200 deg c ish.

You can (Gently) Hold the plastic pipes over a flame to make them soft enough to push the fittings in then allow to cool naturally, do not quench!!

[Blink]

Originally Posted by HarryM1BYT

.... I use a length of wood and a hammer, to gently tap the master cap loose and then make a large hole in the middle of the rubber condom, as it no longer serves much purpose.

Harry - if the rubber condom serves no purpose can't I just get rid of it? ... i.e. take the whole thing out instead of just making a hole in it.

[Blink]

Originally Posted by trikey

You can use a 6mm PCL air fitting to connect the pipes, don't try with hot water, its nylon and doesn't melt until 200 deg c ish.

This one? https://www.amazon.co.uk/Genuine-PCL.../dp/B01JAPL1CG

Originally Posted by trikey

You can (Gently) Hold the plastic pipes over a flame to make them soft enough to push the fittings in then allow to cool naturally, do not quench!!

I've got a mini hot air gun - that might do the trick.

[Blink]

I just cut the hose and the internal diameter is around 3.5mm to 3.7mm - so I'm not sure a 6mm PCL fitting will go in. The pipe wall is so thick I don't think it's going to stretch much.

[Blink]

Originally Posted by trikey

You can (Gently) Hold the plastic pipes over a flame to make them soft enough to push the fittings in then allow to cool naturally, do not quench!!

Originally Posted by Blink

I've got a mini hot air gun - that might do the trick.

5 minutes and less than an inch away from the hot air gun (which is damned hot) had no effect whatsoever on the pipe.

For my next attempt - a gas blowgun!

[trikey]

Originally Posted by Blink

I just cut the hose and the internal diameter is around 3.5mm to 3.7mm - so I'm not sure a 6mm PCL fitting will go in. The pipe wall is so thick I don't think it's going to stretch much.

A PCL fitting goes over not in! Trust me, it’s how I made mine up 😀


Sent from my iPhone using Tapatalk

[Blink]

Originally Posted by trikey

A PCL fitting goes over not in! Trust me, it’s how I made mine up ��

Ah, I didn't realise that - the ribs on this made me think it had to go inside, like a hose pipe connector.

Anyway, I just got the blowgun out and produced this.



There's an inch of brake pipe inserted into each hose - it's pretty solid, i.e. I can't rotate one end against the other, so I think it'll take the pressure without leaking. The snag is the ID of the brake pipe is smaller than the plastic pipe so it'll reduce the flow.

What do you think?

[Daveluck]

Originally Posted by Blink

Ah, I didn't realise that - the ribs on this made me think it had to go inside, like a hose pipe connector.

Anyway, I just got the blowgun out and produced this.



There's an inch of brake pipe inserted into each hose - it's pretty solid, i.e. I can't rotate one end against the other, so I think it'll take the pressure without leaking. The snag is the ID of the brake pipe is smaller than the plastic pipe so it'll reduce the flow.

What do you think?

Should be ok, you're only using it to bleed the master.

In theory...there shouldn't be that much pressure as the nipple will be open.

You could always put a couple of little jubilee clips on if you're that concerned.

Edit Forgot to add that it is a thing of beauty!

[HarryM1BYT]

Originally Posted by Blink

I've been using one of these in the footwell to get some light onto the master cylinder cap. It can point in just about any angle you can think of. A great bit of kit - I've used it all over the car.

The question is, what fitting? Those SC pipes are 6.1mm outside diameter so the brake pipe fittings I've already got won't do it (they're for 4.76mm outside diameter).

I have a much smaller one than that, from when LED's first appeared. It plugs into a ciggy socket, with a long flex which winds up inside it when not in use. The rear has a hinged flap, with a magnet, so it can be stuck almost anywhere in the car and can show white or a red light.

The easy way to see what you are doing around the master cylinder, is to pull out the wide strip of trim, just below the steering wheel. That, plus the panel above your toes, makes access much easier - The first time I tackled it, I had no idea that trim could be removed so easily.

Would the plastic pipe perhaps soften in boiling water? You can get back to back pneumatic pipe joiners of around that size, to push inside the bore of the pipe.

Alternatively, would a section of metal brake pipe be a tight fit, just add superglue on the brake pipe to prevent leaks.

[Blink]

Originally Posted by HarryM1BYT

.... Would the plastic pipe perhaps soften in boiling water? You can get back to back pneumatic pipe joiners of around that size, to push inside the bore of the pipe.

Alternatively, would a section of metal brake pipe be a tight fit, just add superglue on the brake pipe to prevent leaks.

No, boiling water didn't touch it - the plastic is far too tough for that.

I can't use pneumatic pipe joiners now - the brake pipe is already stuck/melted into the two plastic ends. To re-do it now would mean stripping/melting the plastic pipe off and inserting the two ribbed metal pieces into another section of pipe, which I think is impossible without access to proper factory equipment.

Originally Posted by HarryM1BYT

.... The easy way to see what you are doing around the master cylinder, is to pull out the wide strip of trim, just below the steering wheel. That, plus the panel above your toes, makes access much easier - The first time I tackled it, I had no idea that trim could be removed so easily.

This is the all access I've got to the MC at the moment. Is there anything else I can take off to improve it?