[Vwdiesel] More Quantum Questions?

[Erik Lane]

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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