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gorgeous george |
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gorgeous george L Plate Warrior
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Kickstart |
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Kickstart The Oracle
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shugsterc |
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shugsterc L Plate Warrior
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gorgeous george |
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gorgeous george L Plate Warrior
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gorgeous george |
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gorgeous george L Plate Warrior
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gorgeous george |
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gorgeous george L Plate Warrior
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bridlad |
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bridlad Borekit Bruiser
Joined: 29 Jan 2012 Karma :
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Posted: 21:16 - 29 Jan 2012 Post subject: |
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when youve removed the pads and cleaned the sliding pin make sure you put a flat bar or piece of wood between the pistons when you use the lever to push them out ,you dont want any of the pistons popping out ,once youve got them so far out use clean brake fluid and a tooth brush to clean the pistons dont use wd40 ,dont be tempted to use anything abrasive on them otherwise you will scratch them then they will leak,when you are satisfied they are all moving freely push them right back into the caliper ,apply some copperslip grease to the sliding pin and the ends of the pads which slide in the caliper dont get any on the friction material of the pads for obvious reasons ,refit the calipers pump the lever a couple of times until it bites and job done ,hth |
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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Posted: 21:22 - 29 Jan 2012 Post subject: |
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Hi
If it is the pistons (personally, unlikely the main problem) then you use a rubber grease (normally red) on the sides of the pistons. Make sure you don't get any on the friction surfaces of the pads.
With sliding calipers like the 600 Bandit, you have plenty of room to push the pistons back with a G clamp. Also When pushing the pistons back on one caliper make sure the other has the pistons secured to stop them popping out (generally it is easier to push the other pistons out than it is to push the fluid back into the reservoir).
For the pins, take a caliper off, remove the pads and then slide the caliper off its carrier. Clean up the pins and reassemble with a suitable lube
All the best
Keith ____________________ Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing |
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bagger |
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bagger Nitrous Nuisance
Joined: 18 Aug 2007 Karma :
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Posted: 21:25 - 29 Jan 2012 Post subject: |
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i wouldnt bother with wd40 on the pistons just use clean brake fluid and a toothbrush ____________________ sv650s,cb350s |
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jj49 |
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jj49 Derestricted Danger
Joined: 29 Jan 2012 Karma :
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Posted: 22:29 - 29 Jan 2012 Post subject: break issues |
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hi there, i had the same problem as you and have suffered with dragging brakes and a wooden feel for months, so i purchased another set from a breakers to refurbish and swop over on the bike, a 98 bandit 600sw.
you can spray the pistons (once pads removed) with silicone spray this wont damage the seals and could help in unsticking them . If you need to clean any corrosion off use a green pan scrubber this wont cause any scratches etc. Then with a small g clamp gently screw them back , make sue you use a cloth over the piston ends and caliper to stop any damage and unscrew resevior top, as in your case they are still fitted ( hydraulic pressure).
you will find as i did and others often complain about is the caliper slide pins stick and wont budge if corroded. heat has to be applied and a leather/rubber mallet used to pursuade the caliper bracket to slide off . I entrusted this job to my local bike shop in the end, who blew the pistons out, fitted new seals and rubber red greased the sliding pins and piston ends.
try and pull the bracket /slider pins away from the caliper, becareful not to damage the rubber boots, the bracket is suppose to slide off. if they are jammed solid then it will be a garage job or vice and heat/mallet and a good squirt of silicone spray.
if you are succesful your local bike shop should have satchets of red rubber grease which is silicone based to be applied to the slider pins once cleaned up. |
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gorgeous george |
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gorgeous george L Plate Warrior
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bridlad |
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bridlad Borekit Bruiser
Joined: 29 Jan 2012 Karma :
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Posted: 15:46 - 30 Jan 2012 Post subject: |
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Red rubber grease is great when reassembling calipers after fitting new seals etc but isnt that good on the sliding pins they really need to be coated in a high temp anti seizure grease (as should all steel bolts into alloy )i.e copperslip it stops the chemical reaction between the steel threads on the pin and the alloy caliper which causes them to seize also wont melt and find its way onto your pads if you really are bothered about doing it watch some vids on youtube |
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Kickstart |
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Kickstart The Oracle
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Pol Anorl |
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Pol Anorl Banned
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Posted: 17:56 - 30 Jan 2012 Post subject: |
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This happened on my bros last week, i ended up with a crow bar on my caliper to get the pistons back in, pumping to get them back out and repeating atleast 10 times to losen them up, now one side is stuck in so i have a lose brake pad that just taps like fuck at <30mph
Pistons are damn expensive! i got a 4 pot caliper the pistons are about £25 each x 4 = £100 not good.
my first thought was to brake untill 1 piston came out, clean it up little bit of fine paper then put it back in and repeat, but bleeding the brakes over and over again seemed like a pain in the ass so it was literaly a case of getting one side out cleaning up then swapping to next side then repeat untill its smoother, mines just fucked and i cba to mess about so going to purchase a new caliper soon. ____________________ GOOD GAME BODYGUARD: https://i.imgur.com/8WePGgf.jpg
20:30:37 Pyro.: I don't sort of like men, I take every advantage to choke on dick.
Jewlio Iglesias: You live in Liverpool - Chances are, the front door has already been kicked off the hinges |
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bridlad |
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bridlad Borekit Bruiser
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Kickstart |
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Kickstart The Oracle
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bridlad |
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bridlad Borekit Bruiser
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Posted: 10:27 - 31 Jan 2012 Post subject: |
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AAh I see now we are talking mounting pins,I stand corrected This might help the op if he can see how its made up |
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gorgeous george |
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gorgeous george L Plate Warrior
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Kickstart |
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Kickstart The Oracle
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Posted: 18:58 - 31 Jan 2012 Post subject: |
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Hi
£45 a caliper isn't bad (although adds up). Looking at Wemot the seals are £5 per piston (for pattern ones), so £20 of seals and say £10 for brake fluid. He is charging you £60 for labour which is well within reason for what can easily be a couple of hours work.
That said, being twin piston sliding calipers they are quite easy to strip and clean yourself:-
Remove a caliper.
Remove the pads from the caliper.
Pump out the pistons. Make sure they both come out at the same time (if necessary use and old brake pad and a G clamp to stop one piston coming out while the other catches up). If you are careful one will pop out and the other will be almost out and easily removed with your fingers. Fluid will go everywhere (one trick is to put the caliper in a plastic bag to catch the fluid as the pistons come out).
Hoik the seals out.
Clean up in the grooves the seals live in (there will be a load of white alloy oxide in there) but be careful not to scratch the actual alloy.
Soak the new seals in fresh brake fluid.
Clean up the pistons carefully.
Put the new seals in place. Make sure they are not twisted and are seated correctly.
Put some fresh brake fluid on the pistons and push them into place, making sure you push them in straight. They should go in reasonably easily.
Put the pads in and put the caliper back on the bike.
Bleed the brakes quickly (don't need to be perfect at this stage, just enough to pump the other pistons out) and repeat the above for the other caliper.
Then bleed the brakes properly.
This is easy on these sliding calipers.
The difficult bit is that the caliper slide on a pair of pins (there is a carrier that bolts to the fork, and the pins are part of that). If they are not sticking then they are easy, but if sticking they can be a pain to remove (plenty of bodgit ways such as levering against the disk or fork leg, but then you stand a good chance of damaging whatever you are levering against).
All the best
Keith ____________________ Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing |
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gorgeous george |
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gorgeous george L Plate Warrior
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Posted: 20:23 - 31 Jan 2012 Post subject: |
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thanks i think im going to it a go cheers for the help boys |
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Fizzer Thou |
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Fizzer Thou World Chat Champion
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Old Thread Alert!
The last post was made 12 years, 128 days ago. Instead of replying here, would creating a new thread be more useful? |
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