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  #1  
Old 04-21-2003, 03:23 PM
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Bypass hose R&R - illustrated

Go to my web site - Cars - Technical - Motor.

Get rid of those leaks and enjoy!

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  #2  
Old 04-21-2003, 03:31 PM
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smoke gets in your eyes
 
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In picture 9, isn't the clamp on the fuel inlet hose? There woudn't be an in-line filter on the return (cigar) hose which I think is also in the picture.

Sixto
91 300SE
87 300SDL
83 300SD
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Old 04-21-2003, 03:36 PM
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You might consider new delivery valve seals when you have the high pressure lines off.

Sixto
91 300SE
87 300SDL
83 300SD
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  #4  
Old 04-21-2003, 03:46 PM
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Sixto - delivery valve seals

You mean on the injection pump, under the spring?
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Old 04-21-2003, 05:07 PM
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So now you tell me!

SWMBOs 300d was leaking when we bought her; I just yanked the old tubing off, replaced it with new stuff and then I had to mow the yard.

And to think that if I had played my cards right, I could have spent a leisurely afternoon under the hood of my Benz changing those little hoses instead of pushing that stinking mower...hmmm.
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  #6  
Old 04-21-2003, 05:55 PM
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smoke gets in your eyes
 
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Re: Sixto - delivery valve seals

Quote:
Originally posted by Thomaspin
You mean on the injection pump, under the spring?
Them's the ones.

Maybe they're a if-it-ain't-broke-don't-fix-it item on 617s?

603s have an o-ring between the delivery valve cover and the delivery valve case. It doesn't seem to be the case on 617s.

Sixto
91 300SE
87 300SDL
83 300SD
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  #7  
Old 04-21-2003, 06:05 PM
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Sixto - interesting

On the 617 the order at the IP is, reading from top down:

fuel line
pipe connection (the 14mm/13mm threaded brass connector)
compression spring
delivery valve (the latter two are removed when timing the injection)
copper sealing ring

....but I have not heard of any of these being replacement items.

Any one else know on the 617?

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