autoalain Posted July 25, 2017 Report Share Posted July 25, 2017 Folks, got an m20a with cleveland calipers, noticed hard to pull so checked wheels and found wheel hard to turn, rebuilt caliper, new pads, replaces the sliders on caliper, checked that caliper slides smouth on support and little play now, pins were worn 4 thou, installed and still jams, noticed inboard pad is only touching on top 1/4, I have given up, has anyone had this problem, do I just buy a complete unit (ouch), the outer pad seems to fit flush, even changed the complete pad plate, made sure no sharp edges on the plate that would make it jam, no leaks on caliper so I assume the piston is ok, darn this is really got me stumped. also my AME looked it over and found nothing looks wrong. thanks for ANY input. Mike. Quote Link to comment Share on other sites More sharing options...
mike_elliott Posted July 25, 2017 Report Share Posted July 25, 2017 If the pads are jammed on, then you still have pressure on the line coming into the caliper, or the caliper puck is hanging up in the caliper. Check the master cylinder. The pad hitting only on the top 1/4 is an alignment problem that could be wear, caliper mounting taps not correct, caliper ears misaligned etc. Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted July 25, 2017 Report Share Posted July 25, 2017 Make sure there is no air in he system. Make sure there is no problem with the master cylinder. You could remove the hydraulic line when it is stuck to make sure it is a mechanical issue instead of a hydraulic issue. Quote Link to comment Share on other sites More sharing options...
N601RX Posted July 25, 2017 Report Share Posted July 25, 2017 Have the 2 bolts that hold the caliper together been over torqued? These bolts are very close to the piston cylinder wall and if over tightened will lock up the piston. The torque spec can be found in the Cleveland manual. Quote Link to comment Share on other sites More sharing options...
Dream to fly Posted July 25, 2017 Report Share Posted July 25, 2017 If you remove the caliper and push the piston back to the rest position and reinstall the caliper does it slide on the pins? After that test pump up the brakes and when the system is at rest see if the wheel spins or has drag. If it has drag open the bleeder and see if it releases. If it does then replace the rubber hose. 1 Quote Link to comment Share on other sites More sharing options...
Yetti Posted July 25, 2017 Report Share Posted July 25, 2017 Also may want to check run out on axle shaft to make sure it's not bent. Quote Link to comment Share on other sites More sharing options...
carusoam Posted July 26, 2017 Report Share Posted July 26, 2017 May be helpful to post some pictures of the M20A. Best regards, -a- Quote Link to comment Share on other sites More sharing options...
autoalain Posted July 26, 2017 Author Report Share Posted July 26, 2017 Ahhh, axle bent, thank you, the unit was changed a year ago, this may be the issue, I will compare old with new, you guys are good. 1 Quote Link to comment Share on other sites More sharing options...
carusoam Posted July 26, 2017 Report Share Posted July 26, 2017 Somebody posted the remains of an M20A for sale... around here in recent history... They were looking to sell it off to finance other projects... might be of interest to you? Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Immelman Posted July 26, 2017 Report Share Posted July 26, 2017 I had a similar issue with my E. We found the problem was a small amount of corrosion where the puck (slave cylinder) moves. Removed the slave cylinder, took it all apart, cleaned, sanded down the rust, rebuilt with anti-seize, bled the brakes, and they work like a charm, Only cost was two new O-rings for the pucks and my time.... Quote Link to comment Share on other sites More sharing options...
autoalain Posted July 27, 2017 Author Report Share Posted July 27, 2017 Well, not a bent axle, not a pad puck , will loosen bolts a little as per suggestion, BUT>> noticed disk is about 3/8 from down tube, on other (good) side is about 1/8, will take apart both sides and compare , went to another mooney and disks were very close to down tube, so this could be problem that caliper is reaching to far out to work. Quote Link to comment Share on other sites More sharing options...
Yetti Posted July 27, 2017 Report Share Posted July 27, 2017 Bad bearings? or someone got all the spacers mixed up. There has to be something that is causing it not to be aligned. Quote Link to comment Share on other sites More sharing options...
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