1939 john deere b flatback

[Iowamark1848]

Hello, changing trans/rear diff oil in my 1939 john deere b flatback. All I can find is it take 4.5 gallons, however I can only fit about 3 gallons and 1 quart before is starts overflowing the fill hole. I drained BOTH drain plugs, one under the transmission, and one under the drawbar. Rinsed out with diesel fuel. I have tried to jack up the back of the tractor to see if some of the oil would flow forward to the trans with no luck. I didn t know that because it s a flat back if it take less gear oil than others thanks for any input.

 

[caterpillar guy]

Having never been around deere tractors I would guess you need to give it time to flow through some bearings to seek the correct level and that takes time. Like a truck rear axle if you drain the wheel ends where the wheel bearings are you need to jack the opposite side up some and let set for an hour or so to get the oil to the wheel bearings unless there is a plug in the wheel hub for that. So let it set for as day and check it tomorrow and see what you have. You might be able to get the rest in then.

 

[miangus]

Post on the Deere board someone will know. There is also some discussion on the type of oil to be used.