Any L'Cruiser brake gurus about? HZJ75 load balancing +Rear Drums

I don't know what system is used on the LC, but it is likely similar
to the common Bendix type II where the parking brake actuator can
cause the shoe to escape the anchor pin. What happens is that if the
parking brake is adjusted before the hydraulic side is set, the
parking brake actuator can be expanded far enough that the shoes
actually rotate around lever and are not seated on the anchor pin when
the brakes are at rest and the "fixed" end of the shoe can escape the
anchor pin on actuation. Extreme case, but possible. Relax the
parking brake, adjust the brakes shoes, then reset the parking brake
adjustment.

On Thu, 5 Jan 2006 17:48:26 UTC crusty4runner
> wrote:

> Hoping for some input on a problem with rear brakes on a troop carrier
> [2/91manuf].
> Original problem was the escape of the leading shoe on RT/HND Rear set
> from the slave , creating a jammed wheel.
> On inspection of all parts the system was found to totally inundated
> with signs of moisture stress.
> A complete clean [blow-job] together with master cylinder and load
> sequencing valve replacement delivers this new (?) problem, as put
> here
> The brake system bleeds normally as in pedal to master cylinder
> reaction when releasing and pressurizing the system.. When the system
> is closed the brake pedal reacts normally. On starting the engine the
> pedal depresses the standard amount. With the vehicle stationary the
> pedal travel is acceptable. With the vehicle in motion the pedal
> travel extends beyond 50% and only the front discs are activated on
> any attempt to brake (measured or emergency). The rear drums appear to
> have no pressure whatsoever exerted on them.
> I am casting a suspicious eye at the load sequencing valve, primarily
> because I do not understand how it works (hydraulic). I am looking for
> someone to explain the theoretical design of such a
> contraption :-)
> In the event I have missed something very obvious I would appreciate a
> complete jerk back to reality.
>
> thanks.
>
> crusty


--
Will Honea