Fitting new calliper seals

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Lewes96
Posts: 171
Joined: 20 Nov 2016 20:22
Location: Lewes

Fitting new calliper seals

Post by Lewes96 »

Having real trouble getting pistons back into front brake callipers with new tighter seals in place. Anyone got any tips?
nicko
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Joined: 02 Sep 2011 20:29
Location: Salisbury Wilts
Location: Salisbury, UK

Re: Fitting new calliper seals

Post by nicko »

I haven't tried on the Morini but I tend to put the piston in the freezer for 10 minutes or so and it pops right in.
morini_tom
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Location: Northampton

Re: Fitting new calliper seals

Post by morini_tom »

Mine were very tight on the rear of my K1. Sufficient red rubber grease and care to get them going in absolutely square worked for me.
Lewes96
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Joined: 20 Nov 2016 20:22
Location: Lewes

Re: Fitting new calliper seals

Post by Lewes96 »

Thanks but I think the dimensions of the seals are wrong with the external diameter too big causing them to be squeezed in making it too tight for the pistons. MDINA are sending new ones so we will see.
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Daddy Dom
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Re: Fitting new calliper seals

Post by Daddy Dom »

I know there's a choice of inner diameters (16 or 19mm) but as far as I know, the o/d is the same for both.
Happy to be corrected, though.
MRC 3082½
Lewes96
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Location: Lewes

Re: Fitting new calliper seals

Post by Lewes96 »

Tried the new seals but dimensions 38mm inner diameter/45mm outer still mean the inner diameter being squeezed when the required dimensions are 38mm inner and 43mm outer. So no good. Have ordered some from Veltermotousa so we shall see.
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Daddy Dom
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Re: Fitting new calliper seals

Post by Daddy Dom »

Forget my above post - jetlag. I was commenting about m/cs not calipers.
MRC 3082½
Lewes96
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Location: Lewes

Re: Fitting new calliper seals

Post by Lewes96 »

Unfortunately the ones from Veltermotousa were too sloppy so brake fluid leaked around. Does anyone know of a good source of 38 mm calliper seals?
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