Brake problems

Maestro, SEI-V
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neillewis
Posts: 4
Joined: 08 Jun 2019 10:57
Location: Barnstaple

Brake problems

Post by neillewis »

Help! My 1981 Morini 500 has a dodgy front (RH) brake caliper. The pistons were seized so I applied heat to free them successfully but when put back on the bike they now leak fluid. I believe there are seals in the caliper which may have unsealed as a result of the heat. I urgently need advice on this. I've tried to source a replacement seal kit and a replacement caliper to no avail. I also need replacement bleed nipples but can't find those either. Can anyone please help me out here?
Neil
simonnorthroad
Posts: 388
Joined: 16 May 2017 10:57
Location: Bath, UK

Re: Brake problems

Post by simonnorthroad »

Fraction of a minute on Fleabay turned up 30 or 32mm piston dia. seal kits. Can't remember which you need

Ditto stainless bleed-nipples in all sizes.

Do you need more help than this?
3potjohn
Posts: 1243
Joined: 02 Jun 2007 13:58
Location: Devon

Re: Brake problems

Post by 3potjohn »

I was caught out when I first got my Sport as I did not realise there were ball bearings under the bleed nipples.These were corroded.I have stainless bleed nipples now but have never looked at the pistons.Yet!
John
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Ming
Posts: 798
Joined: 01 Aug 2014 16:32
Location: France
Location: Central France

Re: Brake problems

Post by Ming »

Try RGM Norton
Canuck750
Posts: 111
Joined: 29 Jan 2018 22:14
Location: Edmonton, Alberta, C

Re: Brake problems

Post by Canuck750 »

Storz Performance sell Grimeca caliper rebuild kits: pistons and O rings

admin@storzperf.com

https://www.storzperf.com/catalog/page34.html
MickeyMoto
Posts: 2415
Joined: 22 Nov 2008 17:41
Location: Even further oop North

Re: Brake problems

Post by MickeyMoto »

If the calipers are the same as the earlier 31/2 the part number according to my book is 43 09 21. Mdina have the kits, but I'd check first as it says 41mm on the description.
neillewis
Posts: 4
Joined: 08 Jun 2019 10:57
Location: Barnstaple

Re: Brake problems

Post by neillewis »

Hi,
many thanks for the top tips everyone I'll get on it asap. Thanks again.
Neil
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