w20b loader

richard17 · Aug 3, 2021

i am working on a trans issue. i have no forward or reverse movement. went thru electrical.all good. shifter and cable moving plunger fully but no movement. any ideas
of what to look at now would be appreciated

Nordic · Aug 3, 2021

I don't know if the set up is the same as on my 680G loader backhoe but when I had the same symptoms as you describe the flex plate was cracked to the point of having caused a serious enough wobble of the converter that it was no longer engaging the oil pump of the fwd/rev trans. If you tap into some pressure plugs you can find out if you have trans. oil pressure.

AJ. · Aug 3, 2021

As far as I can remember the cut out clutch was air operated and worked off the brake pedals, drain the air tank/s and leave the valves open, start the machine and put it in drive, the parking brake will be on so note if it tries to drive, if it does there is an issue with one of the brake valves, if no change it could be possible the clutch cut out valve has an issue, close the drain valves on the tanks, does the equipment hydraulics work normally?, that setup does have a flex plate and they did crack, but I never come across one to lose the drive, what the history of this failure, I take it there is enough oil and the suction strainer is clean, as said above a pressure test would be the way to go.
AJ

w20b loader

richard17

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Nordic

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AJ.

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