What is an acid brush? Will this remove most of the buildup on the bottom plate?

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1985 300d Turbo Diesel

this is a great thread. My fuel gauge just started acting up. When I get a chance will dig into it.

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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.

An Acid Brush has a hollow round metal handle with short bristles crimped on the end. Harbor sells them in packages of 25 or more. I furst used them when I worked at Sylvania doing electronic work. they are used a lot when soldering.



Do a Google search on them, lots of info.

I use them when doing small jobs with POR, or using glue.


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I discovered when cleaning the sender for my 81 that the copper wire was corroded and broke in 2 places. Much to my surprise I found using a strand of copper wire from a lamp cord actually worked beautifully! I think the silver wire is the one you have to have special wire for.

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1978 Mercedes 240D
1981 Mercedes 240D
1982 Mercedes 240D

I've been reading this forum for 8 years now. There's still gold left in this mountain of information and I'm still mining.

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84 300SD
85 380SE
83 528e
95 318ic

Argh, I was driving along happily with what I thought was 1/4 tank and my car quit. It felt like it was out of diesel. It was. I got it home on a flatbed (AAA idiots came to rescue me first with a can of gasoline after I specifically said I need diesel). They don’t carry diesel.

Anyhow I took out the sender and it was the usual black gunk deal. I’ll post up some photos of the W126 300sd location. On my car you cannot get to the sender through the first aid box. Seat had to come out. I did get the sender out with some slip joint pliers. I’ll post up photos when I get to my pc.

My 240d was a lot easier.

Same old same old. Broken copper wire. Too short to solder. Gummed up shorting bar. Clogged labyrinth endcap. Cleaned up all is good. I really ran it bone dry and it was a bear to prime. My thumb hurts!

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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles

Ok here are the W126 photos. A little different than the W123 since the seat must be removed.

Behind the seat.


Pull the sensor with Knipex Alligator pipe pliers. German tools for a German car.


The rest is the usual stuff. Gummed up sensor. Black spooge all over the wires. Same stuff as the other images in this thread. Broken copper wire. I guess that thing whipping around was making my Reserve light flicker. I should have cleaned it up when I saw this but I kept driving thinking the needle was still working.

My odometer reads low too. I still have a slipping problem in the gears despite multiple attempts at new gears and shimming the stepper motor. So I thought I'd only gone 300 miles since my last fill. I also thought I had a quarter tank.

It was funny, the AAA guy knew diesels. He asked me if it quit slow or quit fast. I said it was great then bam it just flamed out like it ran out of fuel. He said, "not the filters."

Well I've recovered. Thought I'd share the 126 specific stuff since I was thinking this afternoon I could just go in under the first aid kit and pull the sender.

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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles