Master Cyclinder Cans

[satch56]

Hi all
I have a leaking clutch master cylinder can on my 56 FE. It appears to be leaking where it screws in. My question is I believe there were a couple of different cans, how do you tell them apart. My brake can is slightly shorter then the clutch witch made me think that it could hand been changed sometime. I have tried new "O" Rings to no avail. The can seems to be in good knick other than that. The masters do not have brake and clutch molded in the alloy if that mean which typed can they should have. Thank guys.
WSatch

[mcl1959]

There are two types of cans. The first used on FE to EK and the second which is taller and thinner was used on EJ EH a.
They both use the same thread though which is not compatible with the later PBR plastic topped master cylinders. Apparently the plastic topped Girlock master cylinder is the same thread as the tins. (Unsure)
Genuine Holden tins have "Use only DELCO brake fluid" or something like that pressed in around the top, whereas non genuine tins do not. Genuine and non genuine FE to EK tins are all the same size though.
Same with master cylinders, genuine have "BRAKE" and "CLUTCH" moulded into the body and non genuine don't.
I would suspect that your tins are rusted through at the bottom.

Ken

[satch56]

Thank you for the information Ken. I have float soldered the bottom in case. When you screw it down it just doesn't feel as if it's compressing the o ring (seal). I will recheck. Is it possible to screw a tin on to the plastic master thus not seal properly, if you know what I mean!


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[mcl1959]

No, the tins won't engage the thread at all in the later master cylinders. You could try putting a little rubber grease on the thread to make sure it goes in all the way.

Ken

[satch56]

Thanks again Ken. I thought the tins may had been close but not close enough. Good idea with grease didn't think of it, might try to get a thicker o ring as well.


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[old-blu]

 You can also try a thicker "0"  which may help. Use STAG jointing compound [ thin smear], & allow to set o/nite. Clean the thread well & prepare with Prepsol prior to fitting. old-blu

[satch56]

Thanks old-blu just seen your reply. Hopefully all fixed the rubber grease has done the trick.


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