Lotus Elan

Elan S4 master cylinder rebuild question

PostPost by: madmaxsiegl » Wed Aug 10, 2022 9:33 pm

Hello,

I am looking for some insight into how to replace the following seal:

piston.jpg and


No idea how to get it off and on.

Many thanks in advance,

max
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PostPost by: Andy8421 » Thu Aug 11, 2022 6:25 am

Slide a small screwdriver behind the seal, use the screwdriver to lever the seal over the end of the shaft.

Depending on how stiff the new seal is, you can stretch it over using your fingers, if not (as they say) assembly is the reverse of disassembly.

A bit of lube helps - as I assume you are ditching the old seal then you could use oil. When you refit the new seal, only use brake fluid.
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PostPost by: 2cams70 » Thu Aug 11, 2022 9:21 am

You can cut the old one off. The new one will stretch over the lumpy bits ok with a bit of finger work. Definitely lurbricate it but you are better using a caster oil based brake assembly lube than brake fluid. It is more slippery and doesn’t attract moisture like brake fluid which means you can store the assembled cylinder for some time without risk of corrosion
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PostPost by: madmaxsiegl » Thu Aug 11, 2022 12:22 pm

Thanks so much for the responses.

I was suspecting that was a bit hesitant. Ready to move forward now.

cheers,

max
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PostPost by: Billmack » Thu Aug 11, 2022 5:14 pm

Reminiscent of the birthing process
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PostPost by: 2cams70 » Thu Aug 11, 2022 11:11 pm

Billmack wrote:Reminiscent of the birthing process


You sure must have some weird looking kids in that case!
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