Ben2k9 Posted October 22, 2018 Report Share Posted October 22, 2018 Ok so I have the old Marc brake system. Recently had a caliper replaced. Now when I get on the brakes I’m getting pretty heavy shuddering. I’ve got the mechanic looking at it but does anyone more familiar with these have any insight as to the cause? Thanks Link to comment Share on other sites More sharing options...
Anticept Posted October 22, 2018 Report Share Posted October 22, 2018 If the rotor pins have divots worn in then, that is the cause. Alternatively, the new rotor could be coned or warped, make sure that is checked. Link to comment Share on other sites More sharing options...
Roger Lee Posted October 22, 2018 Report Share Posted October 22, 2018 Make sure the disc are free to move on the pins. Burnish (heat and wear) the brake pads by taxing and holding a small amount of pressure on the brakes. If you replaced one set of pads you should have done both. Make sure all air is out of the system. It may take a time or two of brake use and they will settle in. If all else fails shoot the Marc brakes with a 50 cal rifle and put Matco's on. LOL Link to comment Share on other sites More sharing options...
Ben2k9 Posted October 22, 2018 Author Report Share Posted October 22, 2018 Thanks guys. The brake pads are not new just one caliper was replaced Link to comment Share on other sites More sharing options...
Ben2k9 Posted October 24, 2018 Author Report Share Posted October 24, 2018 All these things were checked and not a factor - anyone have any other ideas what is causing this? Shuddering increases the harder brakes are applied. Link to comment Share on other sites More sharing options...
Roger Lee Posted October 24, 2018 Report Share Posted October 24, 2018 If nothing is lose then this is just the brake pads against the disc. It stall may be nothing more than just needing to use the brakes a little more and allow the pads to burnish in better. Give them a chance. p.s. This may even be contaminated pads from a fluid causing the irregular pad friction. p.s.s. The issue with Marc wheels are they are so then that air pressure can change the size of the wheel enough to cause the pins on the disc to bind up. Either too much pressure or too little. Link to comment Share on other sites More sharing options...
Ben2k9 Posted October 24, 2018 Author Report Share Posted October 24, 2018 If it was fluid that had contaminated pads would burnishing pads also potentially alleviate? Link to comment Share on other sites More sharing options...
Roger Lee Posted October 24, 2018 Report Share Posted October 24, 2018 Not necessarily. Things like brake fluid which is like an oil penetrates the pad and never goes away. Many times if that happens you have to replace the pad. Just use them a while and see what happens. Link to comment Share on other sites More sharing options...
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