M6800 battery ok but everything is dead

   / M6800 battery ok but everything is dead #1  

JimS

Bronze Member
Joined
Jan 29, 2007
Messages
86
Helping a friend with some mowing with his tractor and a batwing mower. Was running ok. When I tried to start it up again the whole panel was dead - no lights, gauges, no clicks, nothing. I found a loose battery terminal and tightened it. Still nothing. They jumped the starter contactor and it cranked but no fire. The injector solenoid (?) above the throttle plate has 2 wires, one larger, one smaller. Jumping 12V to the large wire causes the solenoid to buzz. Jumping 12V to the small wire turned on the dash lights. Looked for a schematic on line but didn't have much luck. The wiring diagram I found just showed the wiring harneses and how they routed around the frame. Tried to find the fuse block but didn't find it either. Found some info on where it is so will look again when I get back to the tractor.

I thought it might be an interlock such as transmission but I don't think that would kill the instrument panel. Any suggestions to troubleshoot or where to find a schematic?
 
   / M6800 battery ok but everything is dead
  • Thread Starter
#2  
Found the fuse block - behind a panel under the steering wheel right on the "floor" where your feet are. But behind a panel held on by 4 bolts. Who puts fuses behind bolted on covers? It was easy to get off though so not that bad. All fuses there ok. I found a blown 50A fuse in the harness behind the dash on the left side. Still need to find the reason why it blew.
 
   / M6800 battery ok but everything is dead
  • Thread Starter
#3  
A small bolt came loose, fell down and shorted out the glow plugs. So it ran fine until I tried to start it again. Then the fuse blew. All fixed now.
 

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