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Old 16-01-10, 12:34 PM   #1
5hort5
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Default Seized brake caliper pins.

just started working on the rear calliper and was wondering what the best technique for removing seized brake calliper pins was?



Thanks
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Old 16-01-10, 12:53 PM   #2
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Default Re: Seized brake calliper pins

Soak in plusgas, split caliper & heat up pins before pulling them out with molegrips.

If that fails either cut off flush and drill out or drill a small hole behind (smaller than the dia of the pins) and punch out.

Replace with stainless.

Or do as I did and buy a replacement off ebay off a lower milage GSXR.

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Old 16-01-10, 01:43 PM   #3
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Default Re: Seized brake calliper pins

Quote:
Originally Posted by fastdruid View Post
Soak in plusgas, split caliper & heat up pins before pulling them out with molegrips.

If that fails either cut off flush and drill out or drill a small hole behind (smaller than the dia of the pins) and punch out.

Replace with stainless.

Or do as I did and buy a replacement off ebay off a lower milage GSXR.

Druid
Rear calipers can be had cheap on ebay, had a little trouble removing mine over christmas. One of the caliper bolts was seized solid, and when I tried to remove it the bolt head rounded off, after breaking my ratchet and a breaker bar used on it.
Payed £20 for special socket bit set for rounded bolt heads and attempted again, this time the bolt snapped, leaving half in the caliper and the other half in the caliper carrier.
£16 got me a spare caliper and caliper carrier.
I would advise though, before bidding on a caliper, that you ask the seller to make sure that all the bolts can be freely undone, including pad retaining pins and bleed nipples.
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Old 16-01-10, 02:40 PM   #4
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Default Re: Seized brake calliper pins

Thanks druid, that worked, ish, I split the calliper after a bit of trying, and one pin came out ok, the other one though has sheered off, now I've tried to mole grip it and then hold the grips in a vice and knock the calliper off with a rubber mallet but no joy. How do I get the piston out so I can cut the pin flush and drill it out?

Thanks

si

PS - yer last resort will be go get a calliper from ebay but I'm not at that point yet


Last edited by 5hort5; 16-01-10 at 02:41 PM.
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Old 16-01-10, 02:43 PM   #5
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Default Re: Seized brake calliper pins

is that a caliper from a curvy? my pointys is very very different (just wondering)
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Old 16-01-10, 02:44 PM   #6
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Default Re: Seized brake calliper pins

yep curvy
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Old 16-01-10, 03:05 PM   #7
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Default Re: Seized brake calliper pins

Yep us pointy owners are lucky, we only have the one caliper pin to wrestle with.
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Old 16-01-10, 03:06 PM   #8
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Default Re: Seized brake calliper pins

So how do I get these pistons out then so I can cut the pin?
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Old 16-01-10, 03:09 PM   #9
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Default Re: Seized brake calliper pins

Carefully with pliers, but put a cloth between the piston and the pliers or you'll scratch the surface and it'll start to corrode.
Alternativly, put the caliper back on the bike and use the brake pressure to pop the piston out.
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Last edited by rowdy; 16-01-10 at 03:12 PM.
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Old 16-01-10, 03:14 PM   #10
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Default Re: Seized brake calliper pins

You should of used the brake pressure, why does no one not think of this before unscrewing them lol, im guilty of it once.
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