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#1
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What started out as a simple chore to change the front pads on my 85 911 has turned into, well let's just say no simple job ever stays simple.
![]() As it turns out the pad retaining pins are refusing to come out. I am out of easy ideas, the next step is cutting them in half and see if I can work them loose that way. I don ont care if they get distroyed at this point, as I have new ones on order. If anyone out there as additional ideas they would be appriciated. Beside buying a big break kit, wife would kill me.
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Chris 85 Targa Custom Exhaust, Cat By-Pass & S. Wong Chip Past '77 Targa x2 |
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#2
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I know I still owe you from your lock-nut ordeal.
But on the P-cars I've worked on (944's and Boxster), the retaining pin is accessible from the outside of the caliper, and a drift that fits in the opening can be used to punch it through. And on some, there's a flat-metal spring that sits between the pins and the tops of the pads. If you don't simultaneously compress the spring off of the pin, the pin will be MUCH harder to remove.
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- Tony P. Currently - 1984 944 SP2 racer - 1977 911 KM Special vintage racer - 2000 Boxster S (now mine) - 1995 993 (garage queen) - 2007 Cayman S (wife's track beast) - 2017 F350 (tow monster) - 2018 Jeep Wrangler - 1982 911 Targa (resurrection in process) Gone but not forgotten - 1989 944S2 - 1979 RX7 - 1986 944 - 1991 944S2 (in car heaven...) - 2001 Chevy Suburban 2500 (FIL's beast now) - 2012 Cayman R |
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#3
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On SCs/Carreras, there are two retention methods. One is a circumferential spring that compresses in the caliper when the pin is fully inserted. If this is what you have, I'd try Kroil and heat to the inside part of the caliper where the pin gets "hammered" into place. The other method (which I believe was only on SCs originally but I've seen it on Carreras) is the little clip that goes through a hole in the retention pin just inside the inside plate of the caliper.
Finally, use the PROPER drift to get the best force pushing the pin out. I have one if you'd like to borrow (I'm less than 15 minutes from Germantown). I can also show you the different retention pin styles so you know what you're working with.
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Peter (not "Pete") K. 2026 Lucid Gravity Grand Touring (EV Tow Vehicle) 1997 Spec Boxster #671 2016 Cayman S 2016 Toyota Highlander--wife's DD 2017 VW GTI SE (DD) Gone and missed: 2003 Miata ("SM") race car 1992 Miata ("SSM") race car 2009 911 C2S Coupe 2004 Toyota Prius - sold to son's girlfriend 2006 Dodge Durango 2003 Acura MDX 86 Black 911 Coupe race car 86 Gold 911 Targa 82 WineRedMetallic 911 Targa |
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#4
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I had this exact problem yesterday too!
I've changed pads many times but never had so much difficulty. In this case I was working on my wife's Cayenne but the setup is very familar. There was a lot of baked on dust/dirty that I worked for hours trying to clean; unfortuantely I didn't have Kroil but I am ordering today. I tried several other cleaners and lubricants but no luck. I didn't try heat because it was lathered in flammable lubricants and I was frustrated. Is it possible these pins can deform? Hard to believe in a street car/truck. Proper drift? Don't have that either....hammering with a screwdriver
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_______ Brian '71 T '72 E '80 Weissach SC '94 C2 '05 996 GT3 CUP '09 White Winged Cayman S (Hers, all hers!) '11 GTS/C4S Donuts '15 Boxster S #Blubyu |
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#5
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If it's the pads themselves that are stuck? Try inserting a screwdriver between the pad and rotor and pry apart. Try it in several places to work the piston back into the caliper. Repeat on the others until you can pull the pads out. Can also use a Philips or drift to jacks the pads out. Don’t know how you could cut the pads in half while still in the calipers?
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David I hope to arrive to my death, late, in love, and a little drunk! Just because I don't care doesn't mean I don't understand... Homer Simpson "That's what's keeping me out of F1.... Too much mental maturity...." N0tt0n Some cause happiness wherever they go; others whenever they go. CHAOS, PANIC, AND DISORDER my work here is done... Live without pretending, Love without depending, Listen without defending, Speak without offending |
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#6
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TR in my case it's the pin/retaining rod that runs on top of the pads & spring clip holding them in the caliper. It slides in/out of holes in the caliper. I can get the pin to slide about 50% out but no further. It seems like the pin is swollen in the middle and won't fit through the hole.
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_______ Brian '71 T '72 E '80 Weissach SC '94 C2 '05 996 GT3 CUP '09 White Winged Cayman S (Hers, all hers!) '11 GTS/C4S Donuts '15 Boxster S #Blubyu |
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#7
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If it slides 50%, penetrating oil is not the problem. There's probably a little crimp in it (turn it around and look) - this happens all the time to by drill bits, and they won't fit back in the indexed storage holder. If you find a little piece of metal sticking out (more like a splinter than a whole swollen limb, if you know what I mean) you can gently grind off with a Dremel. Otherwise, get the right tool, line it up very straight, and hit it with a little more force.
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Peter (not "Pete") K. 2026 Lucid Gravity Grand Touring (EV Tow Vehicle) 1997 Spec Boxster #671 2016 Cayman S 2016 Toyota Highlander--wife's DD 2017 VW GTI SE (DD) Gone and missed: 2003 Miata ("SM") race car 1992 Miata ("SSM") race car 2009 911 C2S Coupe 2004 Toyota Prius - sold to son's girlfriend 2006 Dodge Durango 2003 Acura MDX 86 Black 911 Coupe race car 86 Gold 911 Targa 82 WineRedMetallic 911 Targa |
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