Fuel shut off solenoid, upgrade or replacement? - Page 2 - Steel Soldiers::Military Vehicles Supersite

73m819 · 12-09-2009, 15:56

BJORN or anybody eales A QUESTION

some of the cranes that i have run have the 290 version of the 855, they don't have a motor control box, what does the control box control, i know it controls fuel shut off solenoid, it also controls start, all of that being said, can wires be run from the run/start switch on the dash straight to the fuel shut off solenoid and to the starter , bypassing the motor control box , be wired just like in the cranes, straight from the run/start switch,. i do know that you CANNOT roll the 809 series to start if it shut down while running (IE the fsds turns off). i tried leaving the 819 in gear,and tried to start, no go, had to have no rpm or be at a stand still, I'm guessing that there is a oil pressure switch in the box to prevent attempted start while the engine is already running. is there anything that the box does or controls that we need that we cant go around

Hammer · 05-18-2010, 17:19

Well, I FINALLY got around to replacing the solenoid.

FYI, Cummins northwest wanted $76 for that sucker!
I got it for $30 of flea-bay.

Pulled apart the manual valve, turns out that the shaft is bent, and that is what is causing the leak.
Anyone have an extra one of those they want to sell me?

kurtkds · 06-24-2010, 10:16

I think I too may be needing a new sol. valve. Unless I have another issue, Twice in the last couple weeks I've had the 818 shut down on me. The first time I had been moving a trailer around the property and was getting it set in place and the truck just died. It sat for a few minutes while I inspected the IP and area around there this had been one of the warmer days in a while. Got back in the cab and she fired right back up. The next time was yesterday again another warm day for Juneuary (got to about 72 Deg), I had taken a trailer to a friends house a couple miles away, was unhooking the trailer and she shut down again, I didn't have a meter with me to check power to the shut off valve to see if that was the problem. I didn't want to spend too much time over there, so I turned on the bypass to get me home.

I let her cool down for a while then checked the power which was good, shut off the bypass, hit the starter and she ran fine.

So I've got 2 thoughts on this problem.

1 there is something shutting off voltage to the Shut off valve, Over temp Fault?
2 The coil on the shut off valve has a bad spot in it and opens up when it gets "too" hot.

I'm thinking more likely #2 is the problem.

Time to review the TM's so I can review the electrical circuit controlling the shut off Sol.

Hammer · 10-12-2010, 18:57

ARGH!
Well, it looks like I had a second one of these fry!
I caught this one before it did a total melt down. But it was starting to let the magic smoke out.

I had the engine warming up, then the engine just died. A few second later I heard a little hissing, then smelled the smoke.

Any ideas why I had TWO of these do this?
Both of them were IN the solenoid part itself. I will try and pull this one apart. There might be enough left for me to see WHY it toasted itself.

I still haven't got a manual shutoff yet, so for now I have to pop the hood and turn the screw to start/stop it. No fun.

Kurt, the control box controls the fuel solenoid. You can run a bypass wire to it to test and see if it stays running.

Gunnermac · 03-25-2011, 23:11

Hope this is the correct place for this problem. Just bought a 915. It starts and runs great, however it will not shut down using the key. You have to manually close the fuel shut off on the pump to stop it. I am sure its in the electrical system ,wiring,switch and fuel solenoid, Anyone have any other ideas? I have had a number of vehicles that wouldn't start but never one that wouldn't stop.