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Sticky Calipier
Hawkeye Sport R, 2005, 50,000 miles. Twin pot front calipers.
Changed the front pads and disks both sides getting very hot over 60C. So removed the anti rattle stuff nearside now OK say 10C, offside is hot 30 to 70C. I can remove the offside caliper easily and remove the pads by hand no need for a hammer and drift. The calipiers goes back on by hand. In both cases the pistons needed a vice to get them back in but just light hand pressure on the short vice handle. Does this sound like the offside caliper needs changed. eddie |
Originally Posted by dotthedog
(Post 9851702)
Hawkeye Sport R, 2005, 50,000 miles. Twin pot front calipers.
Changed the front pads and disks both sides getting very hot over 60C. So removed the anti rattle stuff nearside now OK say 10C, offside is hot 30 to 70C. I can remove the offside caliper easily and remove the pads by hand no need for a hammer and drift. The calipiers goes back on by hand. In both cases the pistons needed a vice to get them back in but just light hand pressure on the short vice handle. Does this sound like the offside caliper needs changed. eddie If a caliper is sticking you'll get uneven pad wear, the car will pull to one side when driven and you'll get serious high temps on the offending corner. The pistons usually need more than light pressure to push them back a G clamp or 2 long levers are required, if they go back smoothly and evenly they should be fine and your problem could be in the sliders, these should move freely and easily any stiffness or sticking will require freeing off, cleaning and re-greaseing also check the slider dust seals /boots for damage (holes etc) water getting in is the usual reason they seize. If your caliper pistons are seized it's a pretty straight forward job to free them off, often just pushing them in and pumping them out a few times will free them off, if not then strip, clean and replaceing the seals will sort it, worst case scenario is pitted and rusted piston leading to you having to replace them along with seals etc but I'd say on a 2005 car this would be very unlikely. Either way all the parts to service a caliper are widely available so you shouldn't need to replace the whole thing. |
Probably a caliper issue; other common fault is flexible hoses that have collapsed internally, preventing the pad from being pushed back.
Drive the car a short distance and then jack up the front, then see how freely the wheels turn, it should have very little resistance (hearing the pad catch lthe disk lightly is normal). If its hard to rotate the wheel there is a problem |
Today had the calipier off and someone pushing the brake pedal. No 1 piston came out, number 2 did not move. Pushed piston 1 in with the vice with little force and left the vice on piston 1.
Brake pedal pushed again and not much movement from piston 2, second pedal push it came out a bit and third pedal push a bit more. Tried the vice on piston 2 and it went back in but not the full way. Vice back on piston 1 to stop it coming out and brake pedal pushed a few times and piston 2 came out a good bit. Pulled the dust seal back and put in a good bit of WD40. Cleaned what I could but did not take the piston or dust seal right out. This time piston 2 went back in with the vice with little force. Brake pedal pushed again and piston 1 came out but piston 2 did not move. Vice on piston 1 and piston 2 came out when brake pedal pushed. Both pistons pushed back in as far as possible. Caliper put back on car. Went for a drive all disks appart from the offside front cool to the touch. Offside disk just too hot to touch and slight smell of burning. Subaru want over £300 for a calipier, so checking prices of exchange calipiers and avaiability of repair kits on Monday. eddie |
Subaru will be putting themselves out of business soon with some of their prices. I needed front discs and pads and including fitting they wanted £450. Went onto ebay and got hold of some 4 pot calipers which I got fully refurbed for a total of £220. Add the cost of new discs and pads off Ian Godney and I paid £315 for a better condition, better performance brake set up (&£25 labour to fit)
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Yikes, thats a tight fit!
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It is but it fits fine. They also look impressive behind small 16"alloys. I now have the standard 17s so have more space but it wasnt a problem to be honest.
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Originally Posted by ALi-B
(Post 9874594)
Yikes, thats a tight fit!
In brake speak thats bags of room :p its only tight when you can get a a rizler paper in there :D |
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