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Discussion Starter #1
I have a 2018 5055e with power reverse that at 1500 rpm goes into reverse even in neutral or if you have the clutch depressed with the and put it into FWD/N/REV it will still bang itself into reverse
It comes up with a fault on the 524230.07 gearbox/transmission. proportional valve faulty performance.
We have replaced the proportional valve but made no difference to the tractor ???
 

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It's a bit beyond me, but consider the power reverser. It's a hydraulic clutch system. Your' clutch pedal does nothing except provide a signal to the system regarding amount of engagement.

You will need to discover what is causing hydraulic reverse pressure at 1500 rpm of the engine. Sad to say, this might require several gauges, tools and Power reverser specific Component Tech Manual

One last thought... Did you clear the fault code when you replaced the valve?

From the diagnostic manual... "Any active Power train (PTR) Diagnostic Trouble Code (DTC) will disable the PowrReverser™ control valve.
Resolve and clear all PTR DTC′s prior to performing this test."

Please post back what the problem is and the solution.
 

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Discussion Starter #3
Cleared all faults but fault comes back @1500rpm have just pulled the g/box manifold and checking it out
 
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