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Old 07-15-2015, 09:27 PM
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Join Date: Jul 2015
Posts: 2
Inherited Frybrid WVO system & want to convert

I just got a very clean 1982 Mercedes 240D with a Frybrid WVO system. After researching this company I see that it is no longer in business. I made the mistake of attempting to switch over to WVO from biodiesel and experienced an air lock that after days of attempts to clear, convinced me to revert back to straight bio-d and decommission the Frybrid system completely. I want to bring this car back to its original system, running on bio-diesel only using factory design.

My question is, Does anyone have a fuel line schematic for the original system so that I can correctly revert the wacky Frybrid system to Mercedes factory operation?

I downloaded Frybrid's fuel routing schematic and found a Haynes Manual that assumes I already have factory lines and hoses in place. Diagrams in this book are poor and pictures fuzzy. I've included the Frybrid schematic for your perusal.

Any assistance would be appreciated.

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Inherited Frybrid WVO system & want to convert-frybrid-fuel-line-schematic.jpg  
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Old 07-16-2015, 06:50 AM
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Join Date: Dec 2005
Location: Carson City, NV
Posts: 3,858
Welcome to the forum. I don't have a diagram unfortunately. I'm sure someone has one handy, or appropriate pics. You'll probably get a better response to your diesel-specific question in Diesel Discussion. You could ask a mod to move this for you.
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
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Old 07-21-2015, 12:08 PM
formerly newtodiesel
Join Date: Feb 2014
Location: Jacksonville, Florida
Posts: 196
You can get a free FSM at the MB website. It asks for a credit card but its free
Good luck, post your progress
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Old 07-21-2015, 03:47 PM
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Join Date: Mar 2014
Location: White Oak Swamp
Posts: 2,318
just looking at your schematic it looks like all the WVO components are just bolted in and not integrated. You can do it it in bits by just removing the return valve and feed valve and reattach the fuel line back to the IP close to the way it was before. don't forget to reprime the fuelfilter if you spill alot of D. and next weekend cap off the heaters and remove the rest. I'd be interested in your WVO tank to turn it into a small transfer tank.
1993 MB 300D 245K died.
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Old 07-21-2015, 07:34 PM
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Formerly of Car Hell
Join Date: Mar 2008
Location: Buffalo NY
Posts: 2,057
The lift pump has probably been moved from pushing fuel through the filter mounted on the engine to pulling it through, with a 3 port valve in between. Other changes mentioned here;
Converting Frybrid back to original


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82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

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