Question : I have a 1982 John Deere 4250 MFWD tractor and the transmission oil light comes when it is under load for a period of time (after ~20 minutes). I changed the hydraulic and transmission oil filters and it has not made a difference, the hydraulic oil level is up to full. The hydraulic filter case (horizontal) was warm to the touch and the transmission filter case (vertical) was cold when I was pulling harrows with it on the weekend and the light came on. The transmission oil light does not come on when doing light loader work around the yard. The transmission is a quard range. Any suggestions as to next steps in trouble shooting would be appreciated.

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CA$18 : I have a 1982 John Deere 4250 MFWD tractor and the transmission