I am having a hard time turning off my old diesel. It is a 1964 190dc. It starts fine but when I go to shut if off I can't push it far enough for it to cut fuel, or whatever sorcery it does to kill the engine. Any ideas? Should I add slack to the cable?

There's a lever on the side of the injection pump with a cable attached to it. The cable comes out of the firewall. That cable is what you're pushing/pulling on with the knob. Pushing the knob in pushes the lever forward and shuts off fuel, provided it's pushed all the way.

If it's like W115 (I believe it is, might even be the same part), there's a rubber block that the cable housing end attaches to down on the rear of the injection pump, on a bracket. On some I've seen the rubber block expanded and gets too soft, and you can't push the cable in enough to shut fuel off because that gooey rubber won't let you. I've also see 'em with completely dried out busted rubber blocks.

Maybe all yours needs is adjustment or some other simple fix. Adjustment to get more push would be to move the cable housing forward in the clamp, towards the shut-off position.

I've never had to buy one new. Got lucky and scored a nice one at the U-Pull when I needed it a few years ago. I bet Benz can get it. There might be other sources.

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- Greg -
1973 220D, The Prodigal Benz
1974 240D

Yeah the rubber bushings on that block are pretty squishy, that is likely the problem. I will have to get to searching for another one.

If I remember right the one I snagged for the '73 W115 came out of a '67 Heckflosse diesel. Might open up your search some.

Here's a link to a pic of a Heckflosse IP:

http://www.german-spob.com/bilder/EBAYBILDER/G9_55_S7_D_1.jpg

The bracket's there, on the RH side above the run/stop lever, with three holes in it (those two holes closer to the IP don't count). The cable housing clamp is part of a similar plate with three holes located on the other side of the bonded rubber block (both missing in photo).

Those three holes remind me of my thinking I could rig mine with some screws/nuts but then I found that good one and didn't have to. That idea might buy you some time too.

__________________
- Greg -
1973 220D, The Prodigal Benz
1974 240D

You could try adjusting it out more. Mine was pretty thrashed but got it to work.

Eventually I just found some rubber. It was a bear and dangerous cutting something of a similar shape.

But this is really a concept you can make work anyway you can.

The thing is, there is a little extra pull at the end. So when you start it gives an extra little squirt.

Thanks! That helps me. Much to my wife's dismay I usually farmer fix things like this so they work. I was feeling guilty since it is the family toy. I'm glad to hear I'm not the only one who thinks of functionality. I was going to cut a piece of rubber and see what I get.

As far as I know, its your only option. Its function is to keep vibration off the knob.

While unhooked check out that little last bit of play the lever on IP has at the end. Gives a little extra shot of fuel while pulling the knob to start.

Those crazy germans. Think of everything.