[Vwdiesel] More Quantum Questions?

[Erik Lane]

Sorry for the confusion.

I successfully stretched my seal, which was also green, over the head and
installed it with the head pulled back a *little* from the body - just
enough to expose the sealing surface where that o-ring goes. I think the
bolt in the middle is more to keep all the cam rollers in place - those were
the first to drop out of place and require me to remove the pump from the
engine on the first one I attempted.

I got my seal kits every time I've done it from "prothe" on ebay and have
been happy with them so far. I was careful and worked slowly when stretching
the o-ring around the head, but there wasn't any time that I thought I was
on the verge of breaking it. So maybe it's a different quality? I really
don't know.

Erik

On Mon, Apr 20, 2009 at 5:26 AM, brian gochnauer <brian at gochnauer.net>wrote:

>  The seal I had (green) could not be stretched over the head, meaning that
> I
> had to remove the head and the pump piston you've so cleverly kept in place
> will fall.
> Yes the bolt in the center would solve the problem of keeping the govenor
> lever engaged, until you remove the head, but I don't see how you'd ever
> keep the springs lined up with their seats that stay in the pump, since
> that
> seat also rotates VERY freely.
>
> If you had a really stretchy seal, I definitely believe you could do it.
>
> Eric,
> You successfully did which?
> ... stretched the replacement seal over the head
> ... completely removing the head of the pump while in the car and
> reassembed
> ... think it is possible, but was unsuccessful
>
> brian
>
>
> On 4/19/09, Erik Lane <eriklane at gmail.com> wrote:
> >
> > Well, you can replace the O-ring while it's in the car, but you first
> have
> > to go out and buy a certain bolt that then threads in the hole in the
> > middle
> > of the high pressure head and you can very slowly and carefully back some
> > out while turning that one in to hold internals in place. It takes some
> > care, and if done improperly can damage stuff, but it's not terribly
> > difficult, just a little time consuming.
> >
> > I know it's possible, since I've done it, but I also messed it up the
> first
> > time I tried it and I had to get it out and on the bench to disassemble
> and
> > reassemble correctly. It's not too bad, but can be a little painstaking.
> >
> > All that said, if this guy knows what he's doing and is good like that,
> I'd
> > happily send him a pump next time I need it rebuilt!
> >
> > I'll be very interested in hearing what the results are!
> >
> > Erik
> >
> > On Sun, Apr 19, 2009 at 2:51 AM, William J Toensing
> > <toensing at wildblue.net>wrote:
> >
> > > Well, no more right now but I am sure more will follow. What follows
> will
> > > be a progress report & report of an interesting phone conversion I had.
> > > I bought a used Quantum IP on eBay for $150 & had him forward it to a
> > > repair person in Maryland whom I shall not name yet, for rebuilding,
> > since I
> > > have not received the pump yet. However, if my gut feeling is correct
> > this
> > > person may prove to be an excellent reliable inexpensive source to have
> > IPs
> > > repaired. He told me he had finished the pump repair & the total cost
> was
> > > $165 including shipping.
> > > I had a very interesting conversation with this person who told me he
> was
> > > retired from Chrysler Corp. & was involved in the engineering of the
> > > Cummings diesel for the Dodge pickup, & was involved with the VE pump
> > used
> > > on the Dodge/Cummings. He said this was a Bosch designed pump very
> > similar
> > > to the Bosch VE pump used on VWs except the Dodge has 6 cylinders. He
> > said
> > > he was rather upset with some of these "Redneck Mechanics" who were
> > messing
> > > up the Cummings VE pumps for more power which he said compromised
> engine
> > > longevity in order to "peal rubber" & dropped mileage on a 5 speed
> > > Dodge/Cummings from up to 27 MPG to 14 MPG. He also felt it was not
> right
> > > for some of these "Redneck Mechanics" to get $500 or more for an hours
> > work
> > > rebuilding VW IP pumps, often improperly.
> > > He also said you can't replace the big "O" ring at the rear of the IP
> > while
> > > on the car. It has to be off the car & in a vertical position. So, I
> > think I
> > > goofed in trying to replace the rear IP "O" ring while on the Quantum.
> I
> > > will also have a properly rebuilt & re sealed IP out of this. I will
> then
> > > have that one rebuilt & possibly use it on the '86 Jetta & go for the
> > turbo
> > > kit for it.
> > > Thanks to all who have provided tips so far & hope this long posting is
> > of
> > > interest to others.
> > > Bill Toensing, Nevada City, CA
> > >
> > > _______________________________________________
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> > > Vwdiesel at vwfans.com
> > > http://www.audifans.com/mailman/listinfo/vwdiesel
> > >
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> >
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