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 Post subject: caliper rebuild...
PostPosted: Sat Jul 07, 2018 6:55 am 
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On the main road

Joined: Thu Nov 07, 2013 1:59 pm
Posts: 100
Country: United Kingdom
Bikes owned: A100 GT250 & 4t Yams!
Hi All

I'm trying to rebuild the front caliper. I've successfully blown out the piston with air and now I'm trying to remove it completely by splitting. The two (M*8?) allen bolts are seized solid however. Both hammer impact and air impact are having ho effect so far. Any tips or simply keep on with the plus gas and keep fingers crossed?

Ta


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 Post subject: Re: caliper rebuild...
PostPosted: Sat Jul 07, 2018 7:42 am 
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Road race school

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 846
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
You could try heat and impact together. If you have no success I have a caliper that already has new seal and stainless piston for sale. But it needs a new dust seal. and the rubber o-rings and seals on the mounting bolts.


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 Post subject: Re: caliper rebuild...
PostPosted: Sat Jul 07, 2018 8:11 am 
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To the on ramp

Joined: Fri Aug 11, 2017 7:09 am
Posts: 307
Country: england
Bikes owned: several gt250 ramairs
i had one like that, when those m10 bolts get stuck they REALLY get stuck :D
i ended up welding a m10 allen key to the bolt and using a 4 foot long piece of steam pipe to turn it. obviously this knackers the bolts up, but i had spares, so no real problem. after a complete refurb it was good as new :D
if you want any spares pm me :D
cheers, dd.

_________________
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.


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 Post subject: Re: caliper rebuild...
PostPosted: Mon Jul 09, 2018 4:11 am 
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On the main road

Joined: Thu Nov 07, 2013 1:59 pm
Posts: 100
Country: United Kingdom
Bikes owned: A100 GT250 & 4t Yams!
Thanks - all apart now. Just needed to get to a vice and a breaker bar. :)

Cheers


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