HWH Jacks Not Lifting the Bus...84 FC

[one_dusty_hoot]

David,
Sounds like you may have had a pressure relief valve
that has a weak spring, or, a piece of debris got lodged
under the check ball for a period. Hydralic systems
typically have one somewhere to prevent damage. Pressure
once it reaches a pre-set maximum operating level overcomes
spring pressure and re-circulates through the pump. If
it was a piece of something it may never happen again.
Bob Janes, Greenville, SC


--- In WanderlodgeForum@yahoogroups.com, "dthollis1961"
wrote:
>
> Thanks for the info Scott and Curt. Today, the jacks work fine.
> Waiting for a return call from HWH to see what they say.
>
> David Hollis 84 FC35 Springfield,IL In the process of removing
> tape stripes!!! Always something to do...what a great hobby!
>
>
> --- In WanderlodgeForum@yahoogroups.com, "Scott Forman"
> <sforman@> wrote:
> >
> > I had a similar problem, and eventually they quit lifting all
> > together. Needed a new motor. Replaced the motor/tank assembly
> with
> > HWH parts, now they work like new, will lift the bus entirely off
> the
> > ground. Wasn't terribly expensive. I did the switch
myself...was
> a
> > bit frustrating at times, but not difficult. Just make sure you
> mark
> > which hose is which before you disconnect them.
> >
> > You may also want to try changing out the solenoid strapped to
the
> side
> > of the motor, but if the motor runs, I doubt that is it.
> >
> > Scott Forman
> > 82 FC35RB
> > Memphis
> >
> > --- In WanderlodgeForum@yahoogroups.com, "dthollis1961"
>
> > wrote:
> > >
> > > My jacks have worked fine for several months till today. Now
> they
> > > swing down and start to lift, but they don't lift very far.
All
> 4
> > > jacks have the same symptoms. Tank is full, motor runs and
> there are
> > > no leaks. When the jacks reach the point that they stop
raising
> the
> > > bus, the motor/pump sound changes pitch as though a relief
valve
> is
> > > opening. Anyone here have the same sympoms that can comment?
> > >
> > > Thanks,
> > > David Hollis 84 FC35 Springfield,IL
> > >dd
> >
>