John Deere 4850. Transmision warning light And pto lever problem.
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Thread: John Deere 4850. Transmision warning light And pto lever problem.

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    John Deere 4850. Transmision warning light And pto lever problem.

    Hello.
    Henrik from Sweden her. New on this forum.
    Sorry if my writing is not so good.

    We got a John deeere 4850 4wd Powershift tractor. 1987. 9000 hours.

    To day i was driving and stopped by the side off the road. When i then was going to mowe on again the light for the transmision was on.
    The yellow light was warning.
    When i rew it higher the red warning and beeping comes on to.

    I notice even that the lever to the pto is stuck in off positioning. I can only move the lever maximum a 1/2 inch.

    The gearbox works.
    Steering works.
    Hydraulic 3-point works.
    The Hydraulic remotes works.
    Ther is little oil leeking thru the pressuresensor fore the transmision. I think its called RE25658

    The tractor is serviced för not so long a go whit original filters and oil.

    Any ideas ?

    Bad Pressure sensor?

    Wat is the normal pressure?
    Last edited by HenrikSweden79; 11-09-2019 at 02:35 PM.

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    Welcome to GTT
    Was trans sump screen checked/cleaned when hyd filters were changed last time? IIRC trans pump pressure should be 155-165 psi(1070-1130 kpa).
    Attached Thumbnails Attached Thumbnails Annotation 2019-11-10 080027.png  
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