Re: [MBZ] Rear Calipers - 91 300D 2.5T
They are dual piston ATE calipers, probably exactly the same as the Porsche (and anything else European). Very easy. GENTLE use of compressed air works, but I usually just free the stuck piston up with the brake pedal (remove that pad only, it will pop loose) then use two screwdrivers or two small prybars to lift the piston out after pulling off the doubtless roasted dust boot. Go gently with the vise grips -- they will collapse the line and fitting otherwise, and it will be REALLY stuck once it's not round anymore. They are 11mm, by the way, so good luck finding a line wrench! Peter
Re: [MBZ] Rear Calipers - 91 300D 2.5T
is it a big deal rebuilding them or should I go ahead and replace them? They rebuild just fine. I use a grease gun filled with water to pump out the pucks. (The threads are the same.) -- Jim
Re: [MBZ] Rear Calipers - 91 300D 2.5T
Thanks Peter - I tried an 11mm flare fitting wrench but it was damged before I got to it and it looks like it'll be damaged farther getting things loose I have new parts - except for the metal line on the passenger side - Rusty couldn;t get it - perhaps it's been discontinued. I may need to find a generic brake line that I can bend to final shape myself. I will wait until I have all the parts gathered before starting - thanks to your comments I will buy repair kits and rebuild the calipers. There was no problem with the brakes - only when I inspected the brakes did I notice one piston more extended than the other. Thanks again for the encouragement -- Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs Porsche Road Test http://members.rennlist.com/roadtest/ . - Original Message - From: Peter Frederick [EMAIL PROTECTED] To: Mercedes Discussion List mercedes@okiebenz.com Sent: Thursday, October 19, 2006 9:40 PM Subject: Re: [MBZ] Rear Calipers - 91 300D 2.5T They are dual piston ATE calipers, probably exactly the same as the Porsche (and anything else European). Very easy. GENTLE use of compressed air works, but I usually just free the stuck piston up with the brake pedal (remove that pad only, it will pop loose) then use two screwdrivers or two small prybars to lift the piston out after pulling off the doubtless roasted dust boot. Go gently with the vise grips -- they will collapse the line and fitting otherwise, and it will be REALLY stuck once it's not round anymore. They are 11mm, by the way, so good luck finding a line wrench! Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.6/486 - Release Date: 10/19/2006
[MBZ] Rear Calipers - 91 300D 2.5T
Howdy - (This is my second attempt to send this - don't know where in cyber-space the 1st one went) I was looking at my rear calipers and it looks like one piston hasn't moved while the other piston has moved 1/2 its travel which means one piston is sticking the caliper probably needs to be rebuilt.I know how to rebuild calipers - just rebuilt my 911 calipers - but have never rebuilt Mercedes W124 calipers - is it a big deal rebuilding them or should I go ahead and replace them? The manual calls for a special tool to remove the pistons - naturally I don't have one - can I get the pistons out using air or pumping fluid thru the caliper?? Also - the fittings on the metal brake lines seem to be corroded and naturally a wrench will not fit them securely. I'll replace them at the same time that I fix the calipers replace the rubber hoses also - any tricks other than vice grips? I'll put some PB Blaster on the fittings before hand but it looks like I'll end up destroying the fittings so it's good I;ll be replacing them. Sorry to ramble -- it sure would be nice to have a lift! TIA - Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs Porsche Road Test http://members.rennlist.com/roadtest/ .
