On Tue, May 6, 2008 at 10:13 AM, Mark Andy <mark@sccaprepared.com> wrote:
> Howdy,
>
>
> On Tue, 6 May 2008, David Scheidt wrote:
> >> I've been discounting "seal problem" because I've never seen any jack
> >> fluid on the floor... Are there seals internal to the jack that won't
>leak
> >> out fluid if they fail?
> >
> > Yes. Most likely failure is the check valve in the pump, which is
> > intended to keep the pressurized fluid from taking the easy route back
> > to reservoir, and not the hard one to the lifting cylinder.
>
> Is that something I can service? How tough is it to get to that check
> valve?
>
> (this, of course, assumes I can find someplace to get parts...)
In theory. One of the things that distinguishes good jacks is that
they're designed to be taken apart, fixed, and put back together.
Cheaper ones aren't; they've got stamped bits, welded covers, and so
on. That's independent of whether you can actually get the parts to
fix it. Here is the owner's manual for the Hein Werner HW93642:
http://www.shinnfuamerica.com/Library/Documents.aspx?ID=710
This basic design has been around for 60 years. It's the same as the
old american-made lincoln jacks that every gas station had 30 years
ago. (and many still do...). The manual has an exploded diagram.
Your jack will be somewhat different, because it's a twin-cylinder
thing, but the basics are there. It's basically a bunch of o-rings, a
couple springs, and a couple balls. A bearing shop will be able to
supply all that (except maybe the springs.), but it's a lot easier to
buy a kit, if you can find one.
(Incidentally, the current Hein Werner is every bit as good as the old
lincolns were. It's made in the USA again, even though it's now a
chinese company. About $300 these days.)
--
David Scheidt
dmscheidt@gmail.com
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Shop-talk mailing list
http://autox.team.net/mailman/listinfo/shop-talk
http://www.team.net/archive
|