check the exhaust line from the booster. When you let up on the pedal, you
should hear the air venting off. It may be plugged some where.I am not
talking about the one on top of the master cylinder.
Bobby Joe Pendleton II
MVPA#17657
----- Original Message -----
From: "Joe Garrett" <j.garrett@gte.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Friday, 08 June, 2001 8:20 PM
Subject: [MV] M211 Brake Problem- Any ides?
> My M211 has a weird brake problem. When you apply the brakes, they stay
on
> for a while. The brake lights stay on, too, so there is pressure on the
> whole system, for about 5 to 10 seconds after the brakes are released.
>
> I put a new booster pack on the truck and this seems to have made the
> problem worse by making the brakes work better. The reason I replaced the
> booster pack is that if you opened the air tanks so there was no air
boost,
> the brakes wouldn't do this and the truck was driveable. This "implies"
> that the problem is not the master cylinder check valve, and that it
resides
> in the air system.
>
> This same thing happened on one of my M35's, too, but I just replaced
> everything; booster, master cylinder and finally all the wheel cylinders
> (the rubber boots were in pieces). I don't know which of these items
fixed
> the problem. It just went away.
>
> Anybody have any idea what is going on here? It is not the brake lines.
> They are fairly new, and they are downstream of the brakelight switch.
>
> Joe Garrett
> cell 425-344-1402
>
>
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This archive was generated by hypermail 2b29 : Thu Jul 05 2001 - 00:40:35 PDT