dm7288 Posted December 20, 2013 Share Posted December 20, 2013 Hi all, I have fitted new shoes and drums all round. when i spin a wheel backwards the trailing shoe grabs and locks the wheel solid. All of the springs are fitted correctly as are the shoes, all wheels grab when off the ground and rotated backwards. Any ideas? Dave.. Quote Link to comment Share on other sites More sharing options...
David Sparkes Posted December 20, 2013 Share Posted December 20, 2013 Based on what I've seen in another forum, chamfer the trailing end of the friction lining. You may have already done the leading edge. HTH Quote Link to comment Share on other sites More sharing options...
dave88sw Posted December 20, 2013 Share Posted December 20, 2013 britpart?... If so get rid, Genuine or DECENT pattern parts (mintex etc) only for brakes in my opinion. Quote Link to comment Share on other sites More sharing options...
secondjeremy Posted December 20, 2013 Share Posted December 20, 2013 Chamferring usually helps - but some pattern cylinders have a very strong internal spring which means that the shoe is pushed hard against the drum - causing it to pick up when reversing. I had trouble fitting the drum on one vehicle and the replacement cylinder had a noticeably stronger spring than the (sound) cylinder I'd removed - so I carefully dismantled the cylinder and fitted the spring from the old one - no problems. Quote Link to comment Share on other sites More sharing options...
dm7288 Posted December 20, 2013 Author Share Posted December 20, 2013 I've chamfered approx a 30 mm lead on the rearmost brake shoe on each one. Seems to have cured the problem. The wheel cylinders are lucas ones, didn't check the spring resistance as all 4 original wheel cylinders had seized up, it had been sitting for some time before I bought it. Quote Link to comment Share on other sites More sharing options...
missingsid Posted December 21, 2013 Share Posted December 21, 2013 The last shoes I fitted where not expensive ones as I am building disk axles to replace them. The drums would not even fitt as they were so over sized and took lots of chamfering to fit! Quote Link to comment Share on other sites More sharing options...
David Sparkes Posted December 21, 2013 Share Posted December 21, 2013 Phew!! When I posted I felt there might be some other reason that I couldn't recall, but if the cure worked, that's the result we wanted :-) Regards. Quote Link to comment Share on other sites More sharing options...
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