Mep 803a stopping question

What happens when you turn these machines off? I have one that keeps running. Is the selinoid switch the off switch connected to the injector pump? I know the fuel pump shuts off but i think the ip sucks fuel right through the fuel pump once its running. Thanks in advance.

The fuel solenoid should fully extend(de-energize) and stop fuel flow to the injector pumps. That would be my first guess. It may not be adjusted properly, have some corrosion, a weak spring or just be worn out.

If you look in the manuals section, there should be an extra, (In addition to the TM's) description on how to adjust the linkage. If the set will not turn off, its the linkage/solenoid. Cant be anything else. UNLESS, the relay has stuck/fused contacts, and doesn't turn off the voltage to the solenoid.

thanks guys, too dam hot to work now. I will check everything in the morning.

nice and cool this morning 80 degrees, felt like 45 after 90 degree days. got to look at my linkage from the shut down solenoid, moved it a couple times by hand and it fixed it self. doesn't get any cheaper or easier then that.
I have another question. does the black writing on the wires mean anything like 24 volts dc or negative lead? is there some significance to the red and black wire numbers? the older machines were like that too red and black wire numbers. thanks again, guys

No, the colors do not mean anything. No problem "fixes itself". Keep an eye out for the problem later on. Hope for the best, prepare for the worst!

The red wire numbers are DC wires and the Black wire numbers are AC wires

I wasn't aware of that, but thanks for the info.