Classic Fitting new brake pistons

frog hopper said:

I think I have found the cause of the intermittant grinding/rubbing noise on Buttercup.
One of the brake pistons on the rear is a little stiff to back off, when I had a look and cleaned everything up last week it didn't seem too bad but now it does seem a bit stiff.
So, my intention is to replace the brake pistons across the axle with st/steel, won't hurt even if it doesn't cure the problem. I will be ordering 4 x st/steel pistons, are bearmach reasonable quality ? and a Lockheed piston seal kit.
Biggest question I have at the moment is after removing the calipers do they have to be split to remove/clean-up/fit new pistons ? and yes I have had a search and can't find the answer, so split or not??

Thanks in advance.

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frog hopper said:

I think I have found the cause of the intermittant grinding/rubbing noise on Buttercup.
One of the brake pistons on the rear is a little stiff to back off, when I had a look and cleaned everything up last week it didn't seem too bad but now it does seem a bit stiff.
So, my intention is to replace the brake pistons across the axle with st/steel, won't hurt even if it doesn't cure the problem. I will be ordering 4 x st/steel pistons, are bearmach reasonable quality ? and a Lockheed piston seal kit.
Biggest question I have at the moment is after removing the calipers do they have to be split to remove/clean-up/fit new pistons ? and yes I have had a search and can't find the answer, so split or not??

Thanks in advance.

Click to expand...

Robthebob said:

I think it's best not to split because they have no gasket and have polished surfaces , so it would be hard to get a good seel.

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Flossie said:

There are rubber seals between the two Half's.
I always split them as it's real easy to fit the pistons, wiper rings etc.
Makes it easier to remove old seized pistons too and you can clean everything real easy to .

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