Benz name for overflow valve?
What is the name for the overflow valve on the engine side of the IP?
Most diesels call it an overflow valve but I can't find anything using that search. Also what psi is it set to relieve at?

Cheers

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO

In the 123 FSM in the index it is called an Overflow Valve; but when you go to that PDF it is called a Bypass Valve.
There could be some issues with translation from German to Eniglish concerning what it is called.

pic from the 123 FSM:

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Thanks.

I can't seem to find anything on it. Mine appeared weak so I took it apart and stretched the spring but now I believe it is set to high...

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO

What were your results after stretching the spring?

There is a long long thread by Cervan (cervan) on stretching the spring.

Also, Fast lane sells new Overflow Valves.

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84 300D, 82 Volvo 244Gl Diesel

Would you have a link for that?

I had some bad fuel contaminate my system so I had to disassemble and clean everything including the injectors and fuel pump. I found that if the valve is set too high the system has a hard time purging air. As well, I assume you won't get enough fuel recirc for proper lubrication of the IP.

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO

Sorry I do not have it as a month ago I managed to accidently erase all of my notes form a USB Drive.
It could Be in the DIY section.
Also in the Factor Service Manual it tells you you can stretc the spring to 27mm if I remember correctly (for 617 engines).

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84 300D, 82 Volvo 244Gl Diesel

It could be more helpful if you said what type of problem you were having.

A new overflow valve from Fast Lane was around $28 + shipping.

to do the test for the Over Flow Valve; and for sure on the Fuel Supply/Lift Pump you need a liquid dampened Gauge or as one of the members did he made some sort of damper.

Personally I do not see how stretching a Spring will in the long run help. If a spring has collapsed some it is because it fatigued. You can stretch it but I would expect it to eventually return to the collapsed state.

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84 300D, 82 Volvo 244Gl Diesel

Hunter posted the thread.

http://www.peachparts.com/shopforum/showthread.php?t=234609&page=25

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84 300D, 82 Volvo 244Gl Diesel