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17-09-13, 09:24 PM
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#1 |
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Knob faced knobster
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Brake pistons, usable?
So what's the verdict on these caliper pistons, fit for use or it or the scrap bucket?
  Some pitting on each of them (the black bits). They're from Tokico 6 pot calipers.
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17-09-13, 09:28 PM
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#2 |
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Guest
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Re: Brake pistons, usable?
Looks like they have an excellent chance of leaking.
Corrosion and pits won't matter if they are all outboard of the seal, (with new pads installed). Yours look pitted pretty far down. I wouldn't use them, I'd rather put them together knowing they won't leak and will last for a long time. Last edited by wideguy; 17-09-13 at 09:31 PM. |
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17-09-13, 09:30 PM
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#3 |
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Member
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Re: Brake pistons, usable?
if the pitting is touching the main fluid seal when installed then bin them.
personally for safety sake (i like my brakes) i would bin and get new ones. yes its a lot of mullah but what's your life worth? this site is a mine to trawl threw but prices are not too bad http://www.motorcycleproducts.co.uk/ |
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17-09-13, 09:36 PM
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#4 |
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Member
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Re: Brake pistons, usable?
Bin DD
Only two look salvageable sent from the shredded wheat factory
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RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi |
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17-09-13, 09:37 PM
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#5 |
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No, I don't lend tools.
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Brake pistons, usable?
Like Wideguy says, check where the pitting is viz position of seal when fitted and pumped up - they may be fine.
If the pitting is too far down the brakes will work OK, but will weep fluid which is a damn fine paint stripper, as I'm sure you know.
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If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst" |
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17-09-13, 09:41 PM
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#6 |
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Member
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Re: Brake pistons, usable?
its not the paint i would be worried about
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18-09-13, 12:14 AM
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#7 |
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Member
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Re: Brake pistons, usable?
Smear some glue on them and they'll be fine.
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18-09-13, 08:16 AM
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#8 | |
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Noisy Git
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Re: Brake pistons, usable?
Quote:
Just make sure there are no sharp edges.
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Currently Ex Biker
Now rebuilding a 63' fishing trawler as a dive boat |
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18-09-13, 11:18 AM
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#9 |
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Guest
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Re: Brake pistons, usable?
its possible to get them machined down, then plated, but thats probably going to cost as much as new parts. As has been said, make sure the pitting doesn't touch the seals with it all reassembled, if it does...bin them and buy new.
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18-09-13, 08:04 PM
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#10 |
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Guest
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Re: Brake pistons, usable?
I've not seen an SV caliper for a while but they look fine!
As others have said, drop one into a caliper and see what level the seal groove is at. Oops, just read your post properly, I have 6 pot Tokico calipers, the damage to yours looks similar to that on mine and I've had no problems. Last edited by sam anon; 18-09-13 at 08:07 PM. |
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