Allrad-LKW-Gemeinschaft

I'll try, but the cylinder is pneumatic and I'd like to know what it controls or what it is controlled by


Hi,

these cylinders were potentially used to implement the required speed limiter for trucks with mechanical governed injection pump.

Or the cylinder is used to switch off the ...

Maybe this old thread (concerning another problem) will be helpful:
https://www.allrad-lkw-gemeinschaft.de/phpBB3/viewtopic.php?p=1112059#p1112059

It shows the different pneumatik cylinders in the injection system of a OM421 engine.
Maybe one of them is the cause of your problem?

Pirx


Thank ...

Hello everyone and thank you very much for your help.
I solved it by adjusting the throttle connection under the hood.
Now it reaches 2500 rpm and almost 100 km/h

Thank you very much
I will do some tests

I also tried adjusting the throttle limit screw on the pump, but it didn't change

I'll try, but the cylinder is pneumatic and I'd like to know what it controls or what it is controlled by

If I push the accelerator lever through the engine hood it reaches 2300 rpm.
On the pump there is a kind of piston that controls the lever

Yes. Every gear only 2000 rpm

Hi all
I have a MB 1222AF that doesn't go over 2000 rpm and 75 km/h. I would like some help to understand how I can increase them a bit. Could there be a limiter?
thanks a lot to anyone who can help me.