One more question on MD shutdown

This topic has been beaten to death in previous posts, but I do have one more ? about shutdown. I promise....just one. If you shut down on diesel, rather than gas, you must shut it down by shutting off the fuel supply, right? You leave the lever alone in diesel position and simply starve it of fuel. Wouldn't that also drain the injection pump and injectors? What happens on restart? Would the pump refill on gravity? Well now maybe I have 2 or 3 questions. Hope someone will answer. Thanks.

It just stops the injection pump from pumping any more fuel, none is drained back, the system remains full right to the tip of the injectors. Shutting the fuel OFF is like not pushing the spray nozzle down on a rattle can. The stem and nozzle stay full. Jim

Once the engine is cooled down and i mean cooled down you just shut it down with the throttle . I have run many gas start switch to diesel I H engines over the years from MD's up thru TD24's , and i was taught to let them cool way down . Back them on the heavy equipment when it was time to call it a day you came into the staging area and most times ya had to wait to get to the fuel tank so it sat idling and cooling down when it was your turn to fuel you fueled up and it sat idling , once fueled you took it over to where you were going to park it and you greased up and cleaned tracks while it idled some more . By the time your were done the temp gauge was now at the bottom of COLD and we would just push the throttle up to the off and she would shut down. we never had a problem with head cracking . When i started farming i had a 450 D. I bought a Junker as that wqas all i could afford and it had issues . everybody i talked to said the same thing CRACKED HEAD , well it has to be fixed so off came the head and to the machine shop it went to be checked . Well it was magni fluxed pressure tested and even X rayed , what they did find was that after all the dirt grease and oil was removed was a NW head that someone had already replaced before me . This was not my engine problem . I ran that tractor for five years hard and always cooled it down the same way . Fast forward thirty years and my Old 450 came back into the neighborhood and was at the one I H dealer with a Engine problem , Yep they pulled the head as that they thought was wrong , Nope it was not the head just like when i owned it it was the injection pump again So that tractor went thru three sets of hand after me and if the guy i sold it to relayed the info i gave him to the next owner and so on it must work.

Janicholson & tractor vet--right on the money with your replies.

Thanks. Jim

Thanks for responses.
great info.
Bruce

Just to be clear, when people say "shut off the fuel" in reference to a diesel, they mean by moving the "throttle lever" to a shutoff position, or by pulling a separate shutoff cable attached to the injection pump. Depends on the engine.

You NEVER shut them off by closing the petcock at the fuel tank!

I expect that will drain the fuel filters, injection pump, and injectors. Then you get the lovely job of bleeding it all out again for the next startup.

Getting a diesel running again after you've changed filters, or run it out of fuel, is NO FUN. Any time you disrupt the fuel flow from tank to injector pump for any reason, you cause yourself pain.

(quoted from post at 11:11:29 02/12/14) Just to be clear, when people say "shut off the fuel" in reference to a diesel, they mean by moving the "throttle lever" to a shutoff position, or by pulling a separate shutoff cable attached to the injection pump. Depends on the engine.

You NEVER shut them off by closing the petcock at the fuel tank!

I expect that will drain the fuel filters, injection pump, and injectors. Then you get the lovely job of bleeding it all out again for the next startup.

Getting a diesel running again after you've changed filters, or run it out of fuel, is NO FUN. Any time you disrupt the fuel flow from tank to injector pump for any reason, you cause yourself pain.

Click to expand...

Just guessing here...never did it...but it would take over 2 loads of manure to run out of fuel.