This is bizarre. Out of the blue, the electric shuttle shift has decided to quit - the 520 won't move in forward or reverse. No broken wires or blown fuses, nothing disconnected. Switch on dash does not make a difference. Hydraulics full. Everything else works. Any ideas? Anyone have experience with this kind of "transmission"?
R520 F-R Shift inop
- Thread starter alfamia
- Start date
Check fuses, check if linkage to the inching pedal or parking brake is free and operational
There is a forward/reverse solenoid that is accessible from under the machine. There are two sets of these and both look similar. One is for forward/Reverse and the other is for High/Low.
Check to see if you have 12V at the solenoid with forward or reverse selected.
There is a forward/reverse solenoid that is accessible from under the machine. There are two sets of these and both look similar. One is for forward/Reverse and the other is for High/Low.
Check to see if you have 12V at the solenoid with forward or reverse selected.
All fuses good, took the lever mechanism apart and checks OK. No obvious things like cut or broken wires. I didn't see any issues with the solenoids, and it's interesting that neither works, and the irritating backup alarm is quiet. Makes me think it's electric. Is there a relay or safety switch that can be checked?
Thanks!
Thanks!
North Idaho Wolfman
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If your not getting power to either the high/low or the forward / reverse solenoids it's definitely a power issue.
And the fact your not getting power to the backup alarm says to me the whole system is down.
Do you have the WSM for it?
And the fact your not getting power to the backup alarm says to me the whole system is down.
Do you have the WSM for it?
Have a wiring harness diagram, not the entire shop manual.
Everything works on dashboard, no change between hi-low/hold
All else seems OK. I dug around under the floorboard and there are a pair of wires for each solenoid and another cylindrical unit lower down. Nothing seems amiss. Those wires all come from the gray connectors that I haven't been able to get apart yet to check for corrosion. Could it be the park switch defective and isn't giving the handle any juice?
Everything works on dashboard, no change between hi-low/hold
All else seems OK. I dug around under the floorboard and there are a pair of wires for each solenoid and another cylindrical unit lower down. Nothing seems amiss. Those wires all come from the gray connectors that I haven't been able to get apart yet to check for corrosion. Could it be the park switch defective and isn't giving the handle any juice?
Have you checked fuse #10? It is responsible for The Park and the FW/Reverse circuit. If fuse is OK, I would check if you have power at the circuit to (at the fuse) to remove that off the list of potential problems. The forward reverse solenoids you should be able to hear a click with the loader ignition on and not running (or at least feel it)
I have a R510 and the machine is similar except your machine has a electric/hydraulic parking brake and my machine has a manual one. Turning on the parking brake locks the hydraulic circuit and if you do have power at the fuse and the fuse is ok, I would check the wiring to the parking brake solenoid.
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Problem Solved!
We finally found a broken wire running out of the harness into a solenoid type block down near front axle/trans area. Looking for the bigger problem blinded me to the obvious one. I could not ever see any loose/broken wires until I pulled all the floor plates off. The downside is that my head is sore from banging my fist on it, the upside is that the loader now has a name, Occam's Razor.
We finally found a broken wire running out of the harness into a solenoid type block down near front axle/trans area. Looking for the bigger problem blinded me to the obvious one. I could not ever see any loose/broken wires until I pulled all the floor plates off. The downside is that my head is sore from banging my fist on it, the upside is that the loader now has a name, Occam's Razor.