The torsion bar sockets in the lower control arms ARE subject to wear and
weld cracking. After 40 years of use, there have been some failures. Add
corrosion from road salt and you get the picture. These things need to be
looked at periodically. I don't feel that the torsion bars are the guilty
party here, rather, it is the lower control arm sockets.
When Manny modifies the Lower control arms for the 1 ton, he
reinforces the sockets with additional welds. I personally do not know of
any of his 1 ton lower control arms that have failed. I have installed many
of his kits. I know that Ken Henderson had some kind of problem with his,
but I do not know what exactly the trouble was. It was at his suggestion
that I specified extending the hex end by 1 inch on Peter Huber's new
torsion bars. Hopefully, due diligence and maintenance will prevent any
more issues.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
> Dale Frahm had an interesting story during his presentation at GMCMI
> Mansfield. He kept having to adjust the front ride height on his coach.
> It never dawned on him that the problem was not failing torsion bars but
> the A-Frame hex housing giving way. One finally failed on him and the
> light finally shined.
>
> Very enlightening presentations at these rallies from some of the most
> experienced owners in the world!
>
> bdub
> 76 Palm Beach in Central Texas
>
www.bdub.net/GMCLinks.html
>
https://www.facebook.com/groups/classicgmcmotorhomes/
>
https://www.facebook.com/groups/gmcmm/
>
>
>
> On Fri, Nov 25, 2016 at 11:50 AM, Jim Kanomata
>
> > Our new torsion bars have more hex contact so the load is spread out and
> > avoid popping the hex sleeve. This popping of the sleeve in the A frame
> > gets more common as the miles pile up on our coaches.
> >
> > On Thu, Nov 24, 2016 at 7:21 AM, Zhookoff, George <
> >
> > > Ken Henderson had an issue with the TB hex rotating in the LCA socket.
> > > First set of Huber bars were OEM length. Second set lengthen to insure
> > LCA
> > > socket seating, at least this is what I remember. Should be an email
> > trail
> > > on the subject somewhere.
> > >
> > > > On Nov 24, 2016, at 9:53 AM, John Heslinga
> > > >
> > > > That installation instruction is how I remember and the torsional
> > > pressure keeps parts in proper relation. I'm OK with that.
> > > >
> > > > Burton is also saying that Mannys is different to Solve the problem
> > that
> > > Manny was having with the Peter Huber Bars.
> > > >
> > > > So that stiLl begs the question to Whats the Differenc? and what is
> the
> > > problem that's being solved with those differences. I need to know
> > > before I install mine.
> >
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