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Matco Brakes locking up


Wing Nut

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I have installed the Matco brakesa few years back now and am quite happy with their improved performance, especially their holding ability for run ups.

 

A funny  thing happened  the last couple of times I have been ground handling the aircraft it pulls out OK but when I try to push it back it is like a ratchet with the wheels binding up like the park brake feature has failed to release.

 

Has anyone experienced this particular issue? 

 

I am starting to suspect the check valve may be faulty or not opening properly  - I would hate to have to pull it from the system but getting the aircraft back in the hangar is getting a bit of a chore when it locked up.

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If you start to push back and you feel like it is binding it would be easy enough to get down and look at each caliper to see if one has not released. If the pads are very thin then it is possible to over extend the piston in the caliper and it could stick. The remedy is to put new pads in.

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