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  #31  
Old 03-15-2009, 04:44 PM
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OK

I edited post #1. to include the most common MB diesel bypass valves, and their engine application.

If you are in doubt, call with your VIN#, year, make, and model.

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Last edited by whunter; 09-28-2010 at 12:15 AM.
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  #32  
Old 03-16-2009, 08:45 AM
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Quote:
Originally Posted by Number_Cruncher View Post
>>
In this case though, I don't see the setting for the IP relief valve being at all critical, and certainly not something to calibrate or to use a selective assembly process for. As long as the opening pressure is above the level required to prevent cavitation in the IP, and comfortably below the maximum lift pump delivery pressure, it will work well.
I think this is true because I once read in a factory manual for this series of IP that they could be GRAVITY fed without a lift pump.
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'85 300 Turbo Diesel 2 tank WVO
'83 300 Turbo Diesel 2 tank WVO
Some former WVO vehicles since ~1980:
'83 Mercedes 240D
'80 Audi 4000D
'83 ISUZU Pup
'70 SAAB 99 with Kubota diesel
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'86 Golf
Several diesel generators
All with 2 tank WVO conversion
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  #33  
Old 03-19-2009, 02:25 PM
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Talking GRIN

Quote:
Originally Posted by whunter View Post
I checked with BOSCH.
There where two remaining in North America, I bought them, arriving next week.
They are trying to order more, but warn that it appears to be a discontinued part#...
I will take one of my samples to a spring supplier for matching.
Both springs are in my hand.

Last edited by whunter; 06-12-2009 at 11:37 AM.
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  #34  
Old 04-21-2009, 03:41 AM
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Talking GRIN

I am looking for a local spring supplier at this moment.
Hopefully a company that will not fold in a few months..
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  #35  
Old 01-07-2010, 05:14 AM
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Might be good to get a tech spec of the spring. That way any spring supplier could provide one.
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1968 Ford F750 truck. 6-354 diesel conversion.
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  #36  
Old 01-11-2010, 01:05 AM
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I'm looking to source that part in Canada for my 1992 300D 2,5 Turbo.

It has all the symptoms of fuel starvation while having good flow and pressure from the charging pump. Not measured, but I removed all 5 injectors recently and reprimed them all quickly and easy by just cracking one injector open...

As for the symptoms themselves: the car has a sudden loss of power at about 2800rpm. (Bear in mind I have converted the car to a pressure type wastegate as described by GSXR).

Because I thought it was the wastegate openning all the time, I intentionnally blocked the wastegate pressure actuator feed line so it would not open anymore (knowing to be carefull not to overboost).

Now I got pressure surges to 18-19psi at 3000rpm BUT yet no power! Then I came back here because I suspected fuel starvation. Checked everything from fuel tank to fuel filter (which is quite recent). Fueled to the same gas station as always, no problem there.

And here I find about that fuel checkvalve.

I'll post my results for sure when I'm done with that checkvalve.

Thanks,
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  #37  
Old 01-11-2010, 05:19 PM
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OM 601,2,3 Overflow Valve

Mercedes part # 601 070 01 46
Bosch part #1 469 990 351

Friendly,not so Local, Bosch Diesel Service Center Says:
Valve OBSOLETED by Robert Bosch Gmbh August 2002

Suggestion from him: ("If it were Mine")
VE type Pumps have the same Fuel Pressure AND their
overflow valve(s) are simply a Orifice (Venturi) WITH
a Teenie ,Tiny screen filter...

Bosch part# 1 463 456 303

So, the only draw back to substituting the VE overflow
for the M type would be NO Bio"D" above 20% AND
Certainly No WVO. (Trash in the fuel would clog the
tiny screen.)

On the positive side the VE type Overflow Valve is
only $15.00 USD (When ordered as Bosch part# from Bosch)
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Last edited by compress ignite; 01-11-2010 at 06:55 PM.
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  #38  
Old 01-12-2010, 12:48 AM
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Dis-information from Bosch

Quote:
Originally Posted by compress ignite View Post
Mercedes part # 601 070 01 46
Bosch part #1 469 990 351

Friendly,not so Local, Bosch Diesel Service Center Says:
Valve OBSOLETED by Robert Bosch Gmbh August 2002

Suggestion from him: ("If it were Mine")
VE type Pumps have the same Fuel Pressure AND their
overflow valve(s) are simply a Orifice (Venturi) WITH
a Teenie ,Tiny screen filter...

Bosch part# 1 463 456 303

So, the only draw back to substituting the VE overflow
for the M type would be NO Bio"D" above 20% AND
Certainly No WVO. (Trash in the fuel would clog the
tiny screen.)

On the positive side the VE type Overflow Valve is
only $15.00 USD (When ordered as Bosch part# from Bosch)
Bosch dropped them because MB contracted another company to make them cheaper.


They are availible here.
Post# 1.



Diesel fuel return valve/banjo bolt, back of injection pump by engine block, at nylon return line going to fuel filter housing.
MB# 6010700146


Application list:

OM601. 911, 912, 921, 940, 941

OM602. 911, 912, 930, 931, 938, 939, 940, 941, 942, 946, 947, 948, 961, 962, 990, 991, 993

OM603. 912, 913, 931, 960, 961, 962, 963, 970, 971, 972

OM616.963

OM661.911

OM662.911

NOTE:
You should replace the banjo bolt/valve seal rings at this time.

Two of the following
Seal ring
MB# 007603012405


.

Last edited by whunter; 10-02-2012 at 03:44 PM.
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  #39  
Old 01-12-2010, 06:20 AM
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Thanks, Hunter

"Bosch dropped them because MB contracted another company to make them cheaper."

I'm beginning to get this Pre-deja Vu feeling that A Lot of MB parts will end up in that same "Bin".

Ya Know,Ladies and Gents, it might behoove us to acquire at least one of each
part "You really can't do without"...
I'm beginning to see a 10 year Pattern (After 10 years DB "Drops" the parts)
almost as if Mercedes were a US company...
Let us not forget,anybody only "Has" to supply parts in the US for "Only" Ten Years after model cessation...
AND unfortunately DB has taken that "Cheap" way out...

A once Proud,Meticulous engineering company that led the world in innovation
and customer service has been degraded to "Untermenschen",by Bean counters.
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Last edited by compress ignite; 01-12-2010 at 06:28 AM.
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  #40  
Old 01-12-2010, 04:29 PM
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Quote:
Originally Posted by compress ignite View Post
"Bosch dropped them because MB contracted another company to make them cheaper."

I'm beginning to get this Pre-deja Vu feeling that A Lot of MB parts will end up in that same "Bin".

Ya Know,Ladies and Gents, it might behoove us to acquire at least one of each
part "You really can't do without"...
I'm beginning to see a 10 year Pattern (After 10 years DB "Drops" the parts)
almost as if Mercedes were a US company...
Let us not forget,anybody only "Has" to supply parts in the US for "Only" Ten Years after model cessation...
AND unfortunately DB has taken that "Cheap" way out...

A once Proud,Meticulous engineering company that led the world in innovation
and customer service has been degraded to "Untermenschen",by Bean counters.
Say it isnt so! Out of all the old cars I have this has been the easiest to find parts for . look down at my signature if you dont beleive me.

AMC

Hunter did you ever find a spring supplier that can identify or come close to the old type spring ? Theres a spring place in san antonio I was going to check with but work and life keep getting in the way. Its ace spring on brooklyn st if anyone around here has time and can get there before me. They have a whole wall full of springs. They specialize in auto leaf springs . Go figure.
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  #41  
Old 01-12-2010, 04:43 PM
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I didn't know about this. Thanks for sharing, oh Great Hunter!

I suspect I might have this issue with my 240D. It seems a bit lethargic on these mountains, and the exhaust is never very sooty. Floored in 2nd gear going up these hills around here it should be leaving a cloud of black soot, but it doesn't. Needs more soot.....discourages tailgaters!!
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  #42  
Old 01-13-2010, 12:09 AM
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Quote:
Originally Posted by whunter View Post
Bosch dropped them because MB contracted another company to make them cheaper.
I was told today at a Bosch Shop that the Bosch part number mentionned before did not exist! They have asked me to provide the pump nameplate details to help.

MD dealer told me they can get the part, but they have to order it from Germany, will take 10 days to get and costs 84,60$ (Canadian).



Quote:
Originally Posted by whunter View Post
They are availible here.
Post# 1.

Diesel fuel return valve/banjo bolt, back of injection pump by engine block, at nylon return line going to fuel filter housing.
MB# 6010700146

But Peachparts will not ship to Canada, right? At least that's what I recall from last time when I needed the vacuum pump.

Thanks,
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'98 E300 Turbodiesel 244 000km
RIP '92 300D 2,5 Turbo 632 859,4km due to engine failure

Last edited by whunter; 10-02-2012 at 03:46 PM. Reason: repair link
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  #43  
Old 01-13-2010, 12:53 AM
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Shipping to canada

Quote:
Originally Posted by BigBen View Post
I was told today at a Bosch Shop that the Bosch part number mentionned before did not exist! They have asked me to provide the pump nameplate details to help.

MD dealer told me they can get the part, but they have to order it from Germany, will take 10 days to get and costs 84,60$ (Canadian).

But Peachparts will not ship to Canada, right? At least that's what I recall from last time when I needed the vacuum pump.

Thanks,
Shipping to canada
Shipping to canada
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  #44  
Old 01-17-2010, 10:58 PM
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Quote:
Originally Posted by BigBen View Post
It has all the symptoms of fuel starvation while having good flow and pressure from the charging pump. Not measured, but I removed all 5 injectors recently and reprimed them all quickly and easy by just cracking one injector open...
Well, it seems I should have measured pressure because I installed the new overflow valve and no help.

In fact it did improve a bit, but when I really need power like under acceleration in motorway access ramp, the car stalls...

Primer pump will be rebuilt this week. Will report on the results.

Bye,
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'98 E300 Turbodiesel 244 000km
RIP '92 300D 2,5 Turbo 632 859,4km due to engine failure
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  #45  
Old 01-26-2010, 11:37 PM
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Quote:
Originally Posted by BigBen View Post
Primer pump will be rebuilt this week. Will report on the results.
So I got everything put back together. I have had the pump rebuilt for 140$ and the overflow valve purchased for 20$, all from a very helpful Bosch Service center in Qc City.

It did restore performance and car now works perfectly. I therefore had a combination of 2 problems related to overflow valve and primer pump (which I initially thought it was all right).

But I must also say, to be honnest, that I had an issue related with my WVO system. I had not initially plug the return banjo bolt in the fuel filter housing...

I'll discuss that a little later in the proper section.

Many thanks,

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