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Join Date: Jan 2006
Location: Alameda, CA
Posts: 419
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How Not to Use a C-Clamp
Swapped out brake pads for the first time yesterday, some of those pistons were really hard to push back! So I bought some C-clamps, and tried to make them work with the curvy calipers. In hindsight, what worked was pretty obvrious, but I thought you might get a kick out of my ignorance....
What worked:   What didn't:      Babak |
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03-10-2006, 10:25 AM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
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if they were that stiff, you should rebuild the calipers. dragging brakes can cause enough heat to vaporize the fluid behind the piston and then you have no pedal. old fluid usually has some moisture absorbed into it and that makes it worse.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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03-10-2006, 11:55 AM
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Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
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I'm able to pull the (old) pads out 1/2 way....and lever the pads against the pucks with finger / thumb against the caliper housings.....
...I have similar "A" and "M" style calipers.... ..of course what helps is the yearly brake fluid change...keeps things from getting stuck too badly.... - Wil
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Wil Ferch 85 Carrera ( gone, but not forgotten ) |
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03-10-2006, 12:07 PM
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Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
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That's pretty funny.
Channel locks are your friend, ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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03-10-2006, 12:09 PM
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Too big to fail
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Didja try opening the bleeder valve?
Also, once you get the one pad out, you get the piston retracted and install the new pad before going on to the next one. Otherwise, you run the risk of the piston(s) on the opposite side pushing the unencumbered piston all the way out to the rotor, at which point you will probably have to take the whole caliper off to sort things out. Not that I've ever done that on 930 rears when installing track pads immediately before I head to the track on a hot day in July or anything.
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"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
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03-10-2006, 12:15 PM
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The tool they show in the manual looks pretty good - anybody know of a source to get that inexpensively - or a close knock-off? I bought one that does not work at all?
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Vance '83 SC Cabriolet - The "Matrix" '73 914 - "Spicy Mustard" - SOLD |
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03-10-2006, 12:51 PM
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Not Quite Banned
Join Date: Dec 1999
Location: Ft. Lauderdale
Posts: 1,222
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Those are some nice looking 'C' clamps.
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Thomas Owen 1972 911T 1972 911S |
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03-10-2006, 12:58 PM
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Location: Alameda, CA
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Thom: Nope, didn't try the bleeder valve... it was my first time and I was a little worried about getting air in there. Is the valve uni-directional? I've been reading that I should at least bleed some fluid out, just to get fresh stuff in the caliper. I'm guessing I do that by opening the bleeder valve and then pressing down on the breaks a bit and then closing off the valve while the brakes are depressed.
John: I found that once I got the pistons to move, they moved pretty easily (though not so easy that I could do it with my pinky toe, Wil-style) the initial sticking was the hard part. Also, once all was said and done the wheels turned by hand. Maybe I should order a rebuilding kit just in case... Thomas: Thanks! Ace hardware, the only hardware store within biking distance. Babak |
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03-14-2006, 10:48 AM
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Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,040
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some clamps can be turned around so they work like 'pushers'
never tried it, but that might work on the calipers...
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off Last edited by randywebb; 03-14-2006 at 02:29 PM.. |
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03-14-2006, 02:26 PM
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I am not sure but I think stores have banned people for using tools like that ... Or maybe it was my wife that I banned from my tools ... Oh well never mind.
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03-14-2006, 02:58 PM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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[QUOTE]Originally posted by BrokeMyCar
[B]Thom: Nope, didn't try the bleeder valve... it was my first time and I was a little worried about getting air in there. Is the valve uni-directional? I've been reading that I should at least bleed some fluid out, just to get fresh stuff in the caliper. I'm guessing I do that by opening the bleeder valve and then pressing down on the breaks a bit and then closing off the valve while the brakes are depressed. That'll make it a 2 person job. Do it this way. You can open the bleeder valve without worrying about getting air into the system. Put your line wrench on the bleeder, take some fuel line (that fits snugly) and slide it over the bleeder. The shorter the hose the better. Run the hose into a clean container that has fresh fluid in it. Open the bleeder and either compress the caliper or give the brake pedal a squeeze. This will move the air out of the hose into the container, if there is any reverse flow it will only suck up fluid.
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"I want my two dollars" "Goodbye and thanks for the fish" "Proud Member and Supporter of the YWL" "Brandon Won" |
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03-14-2006, 04:35 PM
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1983 Porsche 911 SC Cabriolet 3.0
1985 Porsche 911 Carrera 3.2
