Hi! Alan
If perchance the master cylinder isn't brim full then the actuating push rod
can disengage from the pedal push and lay in the cylinder bottom.
This stops the piston returning to relieve the pressure.
Check out the master cylinder before you look elsewhere.
Regards
Bob Harrison G-PTAG
----- Original Message -----
From: "Alan Burrows" <alan@kestrel-insurance.com>
Subject: Europa-List: Tri gear Brake Problems
<alan@kestrel-insurance.com>
>
>
> Hi Guys
> Yesterday I was due to fly to Prestwick and as I taxied around to the
> runway, in 38kts of wind the aircraft locked the port wheel when I
> applied a good amount of pressure to the finger brakes, trying to turn a
> corner against the wind. Now this aint funny at a busy commercial
> airport in driving wind and rain..! The brake was locked on solid and
> the only way to free it was to remove the spats and slacken the bleed
> nipple to release enough pressure to allow the piston to be pushed back
> into the calliper. When I eventually made it back into the hanger I
> applied the brakes again with the same result. Each time I use any force
> on the lever it locks up the port brake. I discovered that if I rock the
> parking brake lever backwards and forwards several times it does free
> off the locked brake, so I guess the problem lies in there somewhere. I
> will know more when I strip it all down. But in the meantime if anyone
> has any suspicions of the levers feeling unusual or not returning
> properly BE CAREFUL the next stage may be a lock up as I experienced in
> the worst possible conditions. I suggest you give your levers a real
> hard pull just to make sure they don't lock on..!
> I will publish more when I have some diagnosis.
> Cheers for Now
>
> Alan
> G-CBWF
>
>
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