Put the flat shock spanner that comes in the standard tool kit in the middle of the caliper, when the pistons pop out under air pressure they cannot come all the way out that way
(30-12-15, 04:49 PM)joebloggs link Wrote: [quote author=Deefer666 link=topic=19013.msg220249#msg220249 date=1451472047]
[quote author=sinto link=topic=19013.msg220178#msg220178 date=1451407453]
[quote author=Bretty link=topic=19013.msg220177#msg220177 date=1451407175]
I have no idea how to get the pistons out now,
If you've got an air compressor, join your two bits of calipers together again and blow them out
Make sure they're connected or you'll do more than "blow the bloody doors off" :b
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I have a blow gun that I have adapted with a Banjo bolt, so that the body of the gun screws into the caliper. Compressed air normally gets the pistons out. Also I find a bit of heat helps if they are being stubborn... The seals are fucked anyway so a blow torch wouldn't hurt anything so long as you don't go mental and melt the o-ring seal between parts of the caliper.
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I've used a grease gun on the bleed nipple to ease them out in the past, OK so you need to give them a good clean after but I prefer the grease method as you not have pistons flying past your ears when they finally pop free
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Owner of Motorcycle Republic, Specialist in unfucking things that others have fucked up.
Anyway UPDATE: I bought a secondhand caliper on ebay and collected it yesterday. It also had knackered seals, but the case was good and it was only £30.
Got it home realises it was seized.. FFS! Spent an hour or so faffing about with it trying to get the pistons out.
I used the 'new' case and a combination of all the best remaining parts to make one good caliper (minus the dust seals) all cleaned up on the bike and working.
I have some new seals on order so when they arrive, unless the existing seals are leaking, I might just fit the dust seals, although the dust seal recess has seen better days!
They metal at the edge of the dust seals on mine was starting to corrode and the dust seals trying to squeeze out siezing the pistons on mine so rebuilt it without dust seals a couple of years ago as a temporary measure to get it through MOT. Got a eBay caliper to rebuild but it was as bad as my one so never rebuilt it. Had no problems running without dust seals and just clean it once a year
(01-01-16, 01:09 PM)Jules-C link Wrote: They metal at the edge of the dust seals on mine was starting to corrode and the dust seals trying to squeeze out siezing the pistons on mine so rebuilt it without dust seals a couple of years ago as a temporary measure to get it through MOT. Got a eBay caliper to rebuild but it was as bad as my one so never rebuilt it. Had no problems running without dust seals and just clean it once a year
I have in the past (on my own bikes) run a rear brake with no dust seals in but only as a temporary measure. If the main seal is in good condition it is not a problem..... I wouldn't do it on a front brake but on a rear as a stopgap measure its not a problem.
Owner of Motorcycle Republic, Specialist in unfucking things that others have fucked up.
(01-01-16, 08:01 PM)Deefer666 link Wrote: I have in the past (on my own bikes) run a rear brake with no dust seals in but only as a temporary measure. If the main seal is in good condition it is not a problem..... I wouldn't do it on a front brake but on a rear as a stopgap measure its not a problem.
So have I for a couple of days to get back on the road while waiting for new seals but riding around for a year banananananannas
I hope I'm not tempting fate here but I ordered a pair of discs from the states (second hand) and they tried to deliver them the other day but I was out, I've recieved no bill from the tax man or information on how to pay the dreaded, so I'm hoping it all depends on how the seller packages the items or the value he/she stated the parcel was worth (mine was above the threshold so was expecting to pay before they would deliver)
A friend of my mum's got sent a text the other day saying she owes £20 tax for a parcel that was delivered to her, with a website address where she could pay the excess.
Only thing is, she hadn't ordered anything or received any packages.
I checked out the tracking code for her and it all looked legit, and had been signed for by a bloke the previous day.
Dunno if someone's made a mistake with her number, or it's deliberate or not.
But there are different ways of paying if needed, although i don't know what would happen if you've already received the goods and then don't pay?
I had to go to the Post Office and pay the tax before they released an item i bought. They normally send the item back if you don't collect within 3 weeks.
More people are born because of alcohol than will ever die from it.
Had two focin great discs delivered today, looks like they'll stop a truck, no charge yet, and as you said darrsi, I was expecting to pay before they released the items.
A pair of Ferodo 320mm discs for £60 delivered from the US, bit of a bargin me thinks
If you use an airline to blow out pistons on calipers FFS put a piece of wood between the pistons to stop them flying right out once they make the initial move, what you are creating is an air rifle with two F-----g great pellets, make your eyes water to say the least.
lol
(29-12-15, 02:43 PM)Bretty link Wrote: My rear brake seizes every winter, but frees up with use. I should have serviced it ages ago, but finally took it off today.
One piston moves with force, the other is stuck. I could probably free things up with penetrating oil, a soak and a clean but am I wasting my time?
Is it a case of "new seals, it'll be fine" or "bin it and get a new one"?
I would obviously prefer to fix it on the cheap, but is it a false economy?
Cheers,
Brett
You'd be as well just throwing this set in the bin :b
Colin
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Ride fast, ride a red bike :-)
