Stopping the fuel is how it stops the engine from running.........imagine a engine you can't turn off.....also is part of safety system
The real question is why you are having to do this at all. Unless I have missed something, I don't recall others having to remove their fuel shutoff solenoid every 5-6 hrs.soooo no one knows of an improvement for this shut off device? its miserable having to remove it every 5-6 hours of usage!!!!!!!!
yep ......only two ways to shut a diesel off.......cut the fuel .....or cut the air.....if you cant stop the fuel the go to way to stop a diesel engine is to shove a towel or something in the intake to starve it of air ......diesels do not require any form of electrical ignitionthanks.... I was thinking the running system was shut off via the key -ignition system, not fuel delivery system.... it shuts off so fast i wouldnt have thought it was the fuel system!
I would be interested in viewing the video ....so if I ever have a issue I am informed...so if it's convenient you could post it for others thxthanks for the last 2 replies!! this last few days the shut off goes bad every time i turn the tractor off.... 10 minutes or 2 hours... I had to remove the device, pump it by hand to squeeze the oil out and reinstal and bammm, the tractor starts..... I finally figured i shouldnt turn the tractor off until i was done for the day or I wanted to go through the proceedure again.. I ordered a new part...then i am going to disect the old one.. the one in there now IS A REPLACEMENT from about 3 years ago! I found this problem on youtube. two guys posted videos on what they had to do to over come the issue. thats how i found out what to do.. They had mentioned it was a KNOWN problem and lots of tractors in my range. 4100 4200 4300 440 4500 4600 4700. (for JD Driver): since once i pump the oil out of the unit, and reinstall, the tractor starts every time, I figured its not an electrical issue... Im guessing since you more experienced guys didnt know of this issue there is little chance there is a new solution or an improved part!
Driver://...i can do that tomorrow...the tractor is in non stating mode........ I have the proceedure to remove and replace down to about 10 minutes.. the secret is a 10mm 1/4" drive deep socket with about .600" of length cut off, the ratchet can rest square to the socket and bolt to remove(just fits).... I take the oil dipstick tube out and it leaves me more room...thanks for the tips and helpToo bad he didn't turn the key to ON while watching the solenoid when he had it removed before doing anything else. I would like to see if the solenoid pulls in or not before he removes the oil.
@dvice - when you are having a starting problem, and turn your key to ON, do you hear the loud clunk indicating that the solenoid is retracting? The next time you have a starting problem, please remove the solenoid and watch it while turning the key to ON to note whether or not the solenoid pin retracts before doing any cleaning. You could even measure the pin retracted length (protruding from the solenoid body) both before and after cleaning to see if that cleaning action actually does anything to make it retract further.
This solenoid lives in an oily environment and even has an o-ring seal to keep the oil in the pump, so it seems odd that this is really the problem.
Again, if the solenoid pull-in coil is not being properly energized by the pull-in circuit with the thermistor, your solenoid will often not have sufficient power to retract and allow the engine to start.
BTW, using a 1/4" drive socket, ratchet, and extension makes it easy to remove this solenoid. The bolt in the back is easy to get to with the proper tools.