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is it an allen bolt that holds the caliper together under those plastic caps if so what size are they thanks? fiesta mk3 (need to change pads)
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mines got a blue handle on it if thats any help?
make sure you get the right size and a long extension to undo them with as they can be very tight
i always clean the bits of rubber stuck to this slider with a bit of emery cloth finished off with a dab of duck oil
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thanks all ive got a 6 and an 8 mm allen key but not a 7mm sods law
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but not a 7mm
You'll be able to pick one up from any motorists centre. It was the manufacturers attempt at stopping people doing home servicing, but all that happened was that companies started selling 7mm allen keys to joe public. Same thing happened when torx fixings were first introduced. Very few people had them apart from the garages. Just look at how easy they are to buy today though.
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thanks but what is duck oil exactly?
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thanks but what is duck oil exactly?
tinyurl.com/yolp2b
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IIRC some of the caliper pins are actually plated (chrome?) in which case use of emery cloth is probably not wise. Use something considerably less abrasive, like elbow grease.
But not this elbow grease ... http ://tinyurl.com/2l7rfc made non clickable for reasons of taste!
--
pmh (was peter)
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I wouldn't bother putting anything on the slides. If they're clean and sliding then leave them alone.
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Mike Farrow
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You're better off buying the type that will fit onto socket set drives rather than the type with the blue handle.
As someone has correctly previously mentioned, these can be extremely tight, and you might need as much leverage as you can possibly manage to get them undone.
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You're better off buying the type that will fit onto socket set drives rather than the type with the blue handle. As someone has correctly previously mentioned, these can be extremely tight, and you might need as much leverage as you can possibly manage to get them undone.
i snapped the blue handle one i just purchased i was using the wheel brace as an extension bar and SNAP, maybe a bit of pen oil overnight on the pins might help?
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>>I wouldn't bother putting anything on the slides. If they're clean and sliding then leave them alone.
That's a fair comment - when Vauxhalls used caliper slides which were sealed with a metal cap, we were kept bust replacing slides where people had used copperslip - this used to swell the rubber, and made the slides stick. There was a special grease available, but most people, and most independant garages simply didn't use it.
Number_Cruncher
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When i said emery cloth i meant very lightly and not to actually abrase the chrome finish.
If you look at the pins when you pull them fully out you will see rubber from the slide actually stuck to the pin which stops it sliding
I always put a smidgeon of duck oil on the slider but never use wd40.
I always copper slip the pads as well even if they dont need it (old school see) :-)
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What's the difference between Duck oil and WD40 then?.
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What's the difference between Duck oil and WD40 then?.
duck oil stays the distance (from a squirty bottle not an aerosol)
wd40 just evaporates
i
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Changed the wifes calipers last week(and I'm no mechanic) I was surprised to find that the outer pad doesn't appear to be attached to anything.
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this usually is due to age or frying brakes
make sure caliper is free and no sticky pistons
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milky joe , your post has been missed that the tool has snapped,
easing oil wont move them, hopefully it was just a poor quality tool youve purchased,
ive only ever known one of these be a problem , and ive done quite a few , if when you get a tool that doesnt snap , the chrome allen keyed bolt still doesnt shift then this from"memory" is what i did =
undo the 2 bolts that hold the caliper carrier to the hub , ease the pads back so that you pull the caliper off the disc, remove the pads, the caliper will now slide off the caliper carrier, you should now have a lump of cast metal in your hand with1or2 shiny bolts in it , mount that in a vice and use some good quality grips to remove them , bear in mind the grips will score the chrome surface, so either polish them back up or replace, if you cant get the bolts out then a trip to a scrap yard will allow you to buy the carrier and bolts, far cheaper than a caliper
and dont go anywhere near the cast caliper carrier with a hammer, they bend very easy [ dont ask !]
dont let the caliper swing on flexible hose, tie it up.
hope you win !
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In reply to im45now
thats sounds like the solution thanks for your trouble (everyone) and advice
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so i dont have to remove the pins to change the pads then? like it says in the haynes manual
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this usually is due to age or frying brakes make sure caliper is free and no sticky pistons
whats the cure for a sticky piston?
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yes you need to undo pins to do the brakes,the poster was explaining how to get round a seized pin thats all
with regards sticky piston you work it in and out via the footbrake and a large c clamp with it being a mk 3 fiesta
unless it is full of rust on the pistoon due to the rubber having gone missing in which case a sourced good s/h unit would suffice
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yes you need to undo pins to do the brakes,the poster was explaining how to get round a seized pin thats all with regards sticky piston you work it in and out via the footbrake and a large c clamp with it being a mk 3 fiesta unless it is full of rust on the pistoon due to the rubber having gone missing in which case a sourced good s/h unit would suffice
i took the advice and managed to withdrawr the caliper and extract the old pads, but obviously i couldnt reverse the process with the new pads as they are too thick to squeeze everything back together even after pushing the piston back all the way so tomorrow i will get hold of a 7mm hex socket and try and release the pins somehow, cheers anyway im 95% there and learning all the time
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managed to get the brakes done finally, thanks for the help offered
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