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  1. I put it off for a while but I finally contacted the factory about the brake pedals as they were binding such that when you had full right rudder the brake pedal wouldn't move. They sent out an update kit and I swapped the faulty parts.

     

    Last night I finally got around to bleeding the brakes. I had a hell of a time. Couldn't do it 'bottom up' I assumed because of the cheapo oil can I was using. So I decided to bleed them the regular automotive way. Still no joy. Then I started to think maybe I had left mixed with right on the lines. So I had Jo pump a right pedal while I cracked the left bleed nipple. Some oil seemed to come out! Well, I must admit I lost my shit and yelled and carried on so much I scared the dog!

     

    When I calmed down we played around with it a bit longer and it occurred to me it was acting more like a blockage than anything. I wonder. .

     

    Turned the park brake 'on' and voila! Oil squirted out the bleed nipple! 

     

    See attached for my fix !

     

    1.thumb.jpg.e0a5de66e03d91593d1dbdc5958b2216.jpg

     

    Edit: I haven't checked yet, but it seems likely to me that the park brake is a one way valve, which means my 'fix' won't work- the park brake will be 'off' in both position!

     

    so for now I may just put a cover over it. Not all ultralights have a park brake.

     

    it also occurred to me that the park brake is assymetrical when it comes to mounting it in the Bushcat. I found a pic from when I was installing it and sure enough there is only one way you can put it in (see pic). This means the park brake was assembled incorrectly at the Matco or Bushcat factory! Grrrr

     

    2.thumb.jpg.92eca2e1797e0f59f126cadc9bdd6dae.jpg

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    • Not really, it's been so long since I looked at them I can't remember anything about it 🤣
    • Yes, but now you're our resident Matco parking brake expert......)
    • All I know is it made me wish it still had the previous version of brakes with just cables, drums and a handbrake 🤣
    • Yep, I for one misunderstood: my park brake is just a pair of ganged ball valves (one for each line): press on the brakes and turn off the valve. I guess there must be some good reason for the arrangement of poppet valves and lift cams in the unit you have, presumably that you can apply the brakes regardless of the valve position...
    • Just updating my blog sites. I think most readers missed the point here that the park brake assembly itself was assembled incorrectly so that it couldn't work as a park brake. All it was doing was turning the brakes on and off- that is, in position 1 had working brakes, and in position 2 they didn't work, but no park brake in either case!
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