Hi R.,
This is all news to me! What residual hydraulic pressure? When the
clutch is engaged there's no force applied to the throwout arm unless
something isn't working right. Moreover, if the roller bearing has the
same external dimensions as the graphite bearing (really half a bushing
arrangement), there should be no problem. If your bearing was always in
contact with the pressure plate I'd expect it to fail a lot sooner than
in 5 years time.
When I replaced the clutch components in the '70 B I owned a decade
back, I went with the roller throwout bearing but I also used the
matching pressure plate/disk in the heavy duty kit. I suppose this
could make a difference. Anyhoo, it was all still OK when I sold the
car 5 yrs later.
Anyone else have experience in this business?
CR
RJohn50603@aol.com wrote:
>
> To all,
>
> Anyway, The reason the engine and transmission are out is the clutch won't
> completely disengage. I just knew it was the throw out bearing. I put one of
> those roller versions on it in '94 because I just couldn't believe that carbon
> style could hold up.
>
> A couple of years later I was e-mailing Damit Dick (miss him) talking about
> the roller bearing and got beseeched by everyone who was listerning that the
> heavy duty roller bearing would fail sooner than the standard carbon one
> because the "residual hydraulic pressure of the system would keep it in
> contact with the pressure plate" unless a specal spring kit was also
> installed.
> R. Johnson - Dallas
>
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