Re: [MV] M54 A2 BRAKE PROBLEMS

From: James Shanks (n1vbn@bit-net.com)
Date: Sat Apr 05 2003 - 17:37:29 PST


Check the vent hole on the foot treadle valve (foot brake) and make sure it
isn't clogged up, if it can't exhaust air to the atmosphere it won't
release the service brake.

Opening service line at rear of truck (for applying and releasing service
brake on trailer) to release the brake on the truck itself is a dead
giveaway of either a plugged vent hole or an O-ring that is failing inside
the treadle valve.

Kindly keep us apprised of what you find wrong please.

James Shanks
n1vbn@bit-net.com
1998 IMZ 8.103
1984 H-D FLHT-C

At 09:10 PM 4/5/2003 +0100, Stuart Beeney wrote:
>Dear All,
> Just writing to see if anyone can help me with a problem I have
>with the brake system on my M54 A2 Truck??
>
>I have recently brought this truck and it seams to have developed a Brake
>locking problem.
>
>The truck has:
>
>New master cylinder
>New fresh silicone fluid
>Stripped and cleaned Air pak
>
>Problem
>While travelling and after using the brakes 3 / 4 times it seam to build up
>pressure and cause the brakes to lock ON, the only way to release the
>locking is to go to the rear of the truck and release the SERVICE tap
>(trailer air line) on the drivers side, releasing just a little air cures
>the problem until the brakes are used a again.
>
>Does anybody have any ideas ????????
>
>Regards
>Stuart Beeney
>M54 A2 6X6 CARGO 5 TON
>
>
>
>
>
>
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