Keyed shut down

   / Keyed shut down
  • Thread Starter
#12  
I can't seem to find the timer on the tractor. The only place I see anything similar looking is right, front by the regulator or on the firewall but neither has numbers on it like the Messicks numbers. Mine are both Nippondenso originals. For now I'll continue with the manual shut off.
 
   / Keyed shut down #13  
I can't seem to find the timer on the tractor. The only place I see anything similar looking is right, front by the regulator or on the firewall but neither has numbers on it like the Messicks numbers. Mine are both Nippondenso originals. For now I'll continue with the manual shut off.
You seeing the actual part number you can purchase many places at a fraction of the tractor parts number price. Not many relays, etc made for a specific application
 
   / Keyed shut down #14  
I can't seem to find the timer on the tractor. The only place I see anything similar looking is right, front by the regulator or on the firewall but neither has numbers on it like the Messicks numbers. Mine are both Nippondenso originals. For now I'll continue with the manual shut off.
I think that's where it's located.

The timer connector will have four wires,
Black - ground
Red - 12v always
Red w/white stripe - 12v in acc position
Black w/blue stripe - to stop solenoid

Have you performed this procedure from the WSM?
 

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   / Keyed shut down
  • Thread Starter
#15  
You guys are great.I see now that it is the unit on the firewall. it's facing down with a shrink tubing around the bottom of it where the connector plugs into it.
 
   / Keyed shut down #17  
I had the same problem on my L2550. a close look at the fuse box showed that one of the brass connections on the fuse box had rusted away and the power to #30 on the relay had been attached to that. I don't think an ignition switch will fix the problem if your fuse box is like mine
Basically the system applies power to the solenoid on the F/I pump to shut off fuel and turns power off after the engine dies. The shut off timer relay turns power to the solenoid on for about 20 seconds when the key is turned to off, then shuts it off again. Check that the timer relay is getting a hot to the 30 terminal on the relay from the fuse box and make sure the relay works if you are not getting power to the solenoid on the pump at shut off.
On my own tractor, the fuse box was an expensive part and I used the manual shut off knob after the electric shut down stopped working. Has worked for 20 years. It is automatic now, turn key and pull shut off knob.
Be sure that you are looking at the right relay, as there is a timer/temperature control relay for the glow plugs, too. Check with your dealer parts guy to see what the correct relay looks like. And check all the wiring first before buying an expensive part you might not need. The relay usually is good and the problem is elsewhere, like my fuse box.
 
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