Author Topic: Fuel Pump Replacement  (Read 1690 times)

Tewfiks

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Fuel Pump Replacement
« on: October 21, 2019, 21:26:15 »
Hello All,

This is my first post on this forum.  I have a 1970 280 SE Cabriolet.  My fuel pump is non operational due to the electric motor not being functional.  I have taken it apart and have tried to rebuild it to no avail.  I have contacted Mercedes Classic and they say the pump is not available currently and there is no ETA for that part. 

What options do I have at this point?  Can I use the newer Bosch fuel pumps, as I have in my 280 SE 4.5 (w108)?

Any advice will be greatly appreciated.

Thanks

doitwright

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Re: Fuel Pump Replacement
« Reply #1 on: October 22, 2019, 02:29:57 »
Your first option when searching for information on this site should always be to use the search function. We have a member Bob Youngman who has become an expert at rebuilding the fuel pump.
Frank Koronkiewicz
Willowbrook, Illinois

1970 280SL Originally Light Ivory - Now Anthracite Gray Metallic

wwheeler

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Re: Fuel Pump Replacement
« Reply #2 on: October 22, 2019, 03:08:43 »
Bob Youngman is the first stop. There are other vendors like Authentic classics that sell new and rebuilt short pumps if you really want the factory style pump. There are not cheap though.

There are other pumps that will work in place of the factory pump and are not as expensive. They do not look the same but function ok. I know Bud’s Benz has one such pump and I believe there are others.

The newer pumps for the V-8’s will not work. They have the wrong specs. So be careful that the pump you do buy (if not the factory style) has the correct specs. The specs should be found in the tech manual.
« Last Edit: October 22, 2019, 03:15:05 by wwheeler »
Wallace Wheeler
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

Tewfiks

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Re: Fuel Pump Replacement
« Reply #3 on: October 22, 2019, 13:00:42 »
The issue with my pump is that the armature has "melted"....
Not sure why this has happened, maybe trying to start the car via a battery charger.
I think I have located a person that is willing to rewind the armature, Advance Electrical Rebuilders out of Michigan.
Mercedessource has also directed me to using the Bud's Benz newer unit.  I will need to give them a call to get the details
of their set up.

Thanks for the responses.

Tewfiks

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Re: Fuel Pump Replacement
« Reply #4 on: October 22, 2019, 13:04:09 »
Here is what I found when I disassembled the fuel pump :




Tyler S.

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Re: Fuel Pump Replacement
« Reply #5 on: October 22, 2019, 13:54:21 »
Definitely get in touch with Bob Youngman (BaronYoungman).  He will be able to help you out with a rebuild and armature repair. See link below:

https://www.sl113.org/forums/index.php?topic=29008.msg209742#msg209742
1968 (67) 250sl. 4 speed manual. DB180 Silver
2019 E450 Wagon. Majestic Blue
1936 Ford PU Flathead V8. Creme on tan interior.
1989 Volkswagen T3 Westfailia Campmobile. Dove Grey (blue)

Chris_ATL

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Re: Fuel Pump Replacement
« Reply #6 on: October 22, 2019, 16:56:40 »
A good replacement until you fix/find a new pump is the carter one mentioned in the thread below... It's only around $120 and works well

https://www.sl113.org/forums/index.php?topic=18970.0


Tewfiks

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Re: Fuel Pump Replacement
« Reply #7 on: October 22, 2019, 21:41:18 »
After speaking with Bob today, I will be sending it to him for repair.
What a wealth of information.
Many thanks for pointing me in his direction


m300cab

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Re: Fuel Pump Replacement
« Reply #8 on: October 25, 2019, 01:28:30 »
Why wouldn't a 4.5 pump work?

btw , I have a new 450sl pump, if interested in having something in the meantime
Michael Parlato

Benz Dr.

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Re: Fuel Pump Replacement
« Reply #9 on: October 25, 2019, 01:40:08 »
A 4.5 fuel pump is for D jet and it runs at a much higher operating pressure. At least 30 PSI as compared to our cars that run at 10 - 15 PSI.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

SEB

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Re: Fuel Pump Replacement
« Reply #10 on: November 10, 2019, 10:38:06 »
I have a question related to the short pump. Unfortunately, I have a pump with a damaged impeller (rotor) and I was forced to buy the a new one short Bosch pump.
Do you know whether only the pump core can be purchased on the American market?
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

scoot

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Re: Fuel Pump Replacement
« Reply #11 on: November 10, 2019, 15:21:26 »
I have a question related to the short pump. Unfortunately, I have a pump with a damaged impeller (rotor) and I was forced to buy the a new one short Bosch pump.
Do you know whether only the pump core can be purchased on the American market?
I had cores but I sold them to Bob Youngman.  You might contact him if you need a part and maybe he'll sell you that part...
Scott Allen
'67 250 SL (early)
Altadena, California

wwheeler

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Re: Fuel Pump Replacement
« Reply #12 on: November 11, 2019, 03:22:43 »
Bob has become an expert on these pumps and I believe he is making an improved impeller as a replacement.
Wallace Wheeler
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

SEB

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Re: Fuel Pump Replacement
« Reply #13 on: November 11, 2019, 09:53:52 »
Gents
many thanks for this advise. Does anybody know how to contact Bob directly? For instance an E-Mail? Company name or web side?
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

JamesL

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Re: Fuel Pump Replacement
« Reply #14 on: November 11, 2019, 10:35:03 »
You can PM him - do a member search on his forum name (above) and send him a message that way
James L
RHD 280 in DB906 with cognac leather

neelyrc

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Re: Fuel Pump Replacement
« Reply #15 on: November 11, 2019, 10:43:20 »
His forum name for sending PM is BaronYoungman.
Ralph
USA
1969 280SL, 4 Speed Manual, Dark Olive (291H), Parchment Leather (256), Dark Green Soft Top (747)
2007 BMW 328xi (E90)
1995 Jaguar XJS Convertible
1988 Mercedes-Benz 560SL
Italy
2004 Toyota HiLux D4D Pickup
2008 BMW 330xd Futura Coupe' (E92)

SEB

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Re: Fuel Pump Replacement
« Reply #16 on: November 11, 2019, 18:21:26 »
Gents!
Many thanks! But I was more thinking, about his professionall address. Knowing me, for instance, I do not have time to look on this side very often- only on weekends.
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),

Iconic

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Re: Fuel Pump Replacement
« Reply #17 on: November 12, 2019, 18:46:17 »
If you "PM" (personal message) him on this site he will most likely get an email.
He is active on the site.
If you have problems, contact me and I'll get the message to him.
Mark
1970 280 SL Automatic, USA version, Grey-Blue (906G/906G), Blue leather (245)
1968 SS396 Camaro Convertible (owned since 1977 -- my first car :D)
1984 Porsche Euro Carrera coupe, LSD, Blue/Blue
1998 BMW M-Rdstr Estoril Blue
1970 280 SL Automatic, Anthracite Grey-173G, Red Interior-132 - sold

SEB

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Re: Fuel Pump Replacement
« Reply #18 on: November 16, 2019, 15:52:38 »
I think I need your help. Few days ago I wrote to him a PM, but until now with out response?
Sebastian
1967 250 SL, 4 Speed, Euro spec, Tunis beige (462H),