Posted by Bob on April 08, 2019 at 20:48:53 from (64.255.159.199):
In Reply to: 3020 won't crank posted by corvette99ht on April 08, 2019 at 20:07:33:
Is it a powershift or a synchro range?
Powershift has two neutral safety switches in series, on at "clutch valve" under your left heel, and one on the opposite (RH) side on the transmission shift valve.
Synchro has only ONE, in transmission case, lower on RH side, near the shift levers that the shift rods connect to.
You will find a 2-wire connector near the starter with two yellow wires, one comes from the start switch, the other goes to the starter solenoid, and the wiring harness from the one or two safety switched plugs in there.
DISCLAIMER: Do NOT proceed unless you are SURE the ignition or fuel is shut off AND the transmission is in "PARK". Proceed AT YOUR OWN RISK of running yourself over, if it should suddenly crank/start and not be in park!
If you unplug the two-wire harness and jumper the wire coming from the start switch to the wire to the starter solenoid, this takes the safety switches out of the circuit, and then try to start it from the operator's station. This will tell you whether or not the neutral safety switch(es) are at fault.
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