S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

how to get at the fuel screen "85 300sd

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Old Aug 16, 2012 | 08:19 PM
  #1  
pat mitchell's Avatar
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1984 300sd
how to get at the fuel screen "85 300sd

please give me a quick guide to cleaning the tank screen on an '84 300sd. from the approach to the car, which door to open, which seat or carpet to pull...
I don't want to mess up this car. i followed the fuel lines back to the rear axle and they go up from there but I am not sure from that poiint. Thanks.

Last edited by pat mitchell; Aug 16, 2012 at 08:20 PM. Reason: typo
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Old Aug 20, 2012 | 05:55 AM
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oldsinner111's Avatar
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From: tennessee
s320
run car down to low on fuel place large 2 gal size or larger bucket under fuel line.The one with the big nut is your fuel line remove and drain(refill with this fuelunless filthy).
The fuel tank strainer I believe is a 27 mm.But you ned a wrench that has small grabbers to turn the nut out,like water heater element wrench.Once screen is out clean with tooth brush and gasoline.. Oh DONT' USE CINDER BLOCKS
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Old Sep 3, 2012 | 10:52 PM
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1984 300sd
Thanks

I didn't have a big enough socket or pump plier, so I took out the whole tank. It was a good thing because the tank was filled with rust and crap. The screen was not clogged. the particles that were clogging the filters were small enough to pass it. I washed the tank with dish soap and bleach ( to kill any live things) and rinsed ti well the dumped in about a half gallon of alcohol. I rised and repeated with the other half gallon. it settled with very little emulsified water in it. I let the tank dry in the hot sun for two days and put 'er back in. Worked great! R&R the tank was a small chore suited to my level of frustration. the only thing I broke was a valve that lets clean air into the tank. I need a new one of those. I think that the socket needed is much bigger than 27mm.
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Old Oct 17, 2012 | 12:06 AM
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blowfish's Avatar
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From: Vancouver, Republic of Canuckstan
81 300sd, 83 300dT, F350, 250 diesel & 16 ft car trailer
i tried to blow air ( literally a BJ is my baby have to hide my dignity for her) into the feed line once i ran a long clear plastic line that fits, it'll buy u some time.
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