I bought this injector tester from India. It does its job but it leaks diesel while not in use around the delivery valve body. I tried to fix it but now it will not prime. The internal is very similar to the IP but I can't make it pump. I might have buggered up a seal or something. The blow up diagram from the vendor shows a DV 'holder'. I am missing it but I don't know what it looks like and where does it go. So I am stuck. Any idea on how to put it back together again? Check out the picture below.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Hoo boy ~ this is why I teat mine like it's made of glass .

I didn't know they had a web site, when I broke the plastic resivoir I just E-mailed them and they sold me another .

If it leaked from new, ask them to replace it under warranty .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

In the attached pic I circled the delivery valve holder.

When it is assembled is it leaking out of the large threaded hole area?

Or is it leaking down where the hand valve?

If it is leaking past the large hole threads there is supposed to be a seal between the delivery valve holder down inside on top of the outer part of the delivery valve.

However, if you degreased the outer and inner threads with brake cleaner and filled in the external threads with that brown messy (old school stuff that has been around since the 1950's) non-hardening or hardening Permatex that comes in a tube and assembled it letting it cure for a day or so I bet it would not leak around the threads.

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84 300D, 82 Volvo 244Gl Diesel

On later model injection pumps, there would be an o-ring on the DV holder, the part circled in yellow, pushed up above the threads.

The fluted pin on the far right goes first, then the spring, then the DV holder.

On a real injection pump, there would also be a copper washer, over the fluted pin, seals against the bottom of the DV holder.

Oh yes ~ Permatex # 1H ~ that's the good stuff but it's also the final solution as once it there getting it off again requires an act of congress and a vat of alcohol .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

This is the picture of the blow up illustration picture came with the unit. Nothing is taken apart except

9 - DV spring
8 - DV Joint cannot find it anywhere, with arrow. Probably lost it by mistake
7 - Bosch delivery valve ( far right on the first post picture )

What is this DV Joint? Same as the copper seal in the IP DV? It is not very clear from the illustration where it goes. I put it back together without item 8 and I cannot get it to work. I like to get it fix as I hate to create more landfill.

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__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Is this from Indian Machine Tools, if so mine leaked from reservoir holder fro day one - not a problem as slight.

You need to lock the two way valve into'test mode' otherwise will drain down.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

#8 DV joint looks like a copper washer / seal, just like a real delivery valve.

There is a non-hardening and one that hardens. Just use the non-hardening.

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84 300D, 82 Volvo 244Gl Diesel

If it leaks from reservoir connection, more than likely will run down underside of connecting arm to main body.

__________________
David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)