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  1. H

    L3700SU

    Update: Ordered an OPC timer another espen$ive electronic part that goes up under bonnet. We haven't received it yet but when testing the wire harness to the opc timer one side is 12 volts with key or off and the other is not energized at all. So the opc timer must be broken. So that's why I...
  2. H

    L3700SU

    So we found out it was not the PTO switch levers that have harnesses that plug in just under the lever of the PTO. We are now thinking it's the OPC timer relay up under the bonnet on the L bracket. We've been thinking it's partially grounded because it would show lots of resistance and then...
  3. H

    L3700SU

    Okay so I think we've found the problem. We found that under the PTO lever there are two "switch levers" part number T1060-43900 and they are black mechanisms with blue wires with red dashes on them with white connectors. They depress a small button on each of them with a little metal flat s...
  4. H

    L3700SU

    Yes terminals are all clean. And connectors good. Where is the PTO safety switch? Where is Neutral safety switch? I'll check seat again.
  5. H

    L3700SU

    Yes suspension with spring on it. The seat switch is leveled like. Took advice printed the 3800 wsm
  6. H

    L3700SU

    Because there is no work shop manual for L3700SU already looked on their website.
  7. H

    L3700SU

    On the glow plug relay wire harness when key is off it reads on the big terminals of 12.55 volts. When key is engaged on big terminals either glow or start it drops to 11.81 volts. The two smaller openings on glow plug wire harness when key to the left (glow) or right (start) reads 0.41 ohms...
  8. H

    L3700SU

    I need a list of all to check: Seat switch is bypassed wired with wire nut cap. Glow plug relay closes the gap when energized. (How many glow plugs are there...how to check them properly) Hydrostatic or speed pedal switch works proper and nothing is wedged to keep it in a forward nor backward...
  9. H

    L3700SU

    Tractor will not make any sounds whatsoever. No click. But ... We bypassed key and directly energized starter and solenoid and the wheel pops forward and spins. So not starter motor. What should be the reading on each of these relays just under the bonnet on then L bracket? Or does anyone know?
  10. H

    L3700SU

    Correct glow plugs don't click but the relay for it does when energized on the one side of pins.
  11. H

    L3700SU

    What is WSM?
  12. H

    L3700SU

    Battery isn't the problem. It does not drop when key is turned. It's at 11.9 volts with multimeter check. Solenoid is not problem nor the starter, tried it directly to battery and it engages and goes. We replaced the Unit flasher relay and the glow plug relay under bonnet. The opc timer that is...
  13. H

    L3700SU

    My tractor won't start. Checked all that follow: Starter relay. Clicks when electrified Glow plug, clicks when electrified. Seat switch works fine. Checked plunger on hydrostatic pedal..disengages and engages fine so neutral. Checked clutch side. Checked PTO Checked all fuses in box and by...