I have a friend who just bought a 1944 Farmall "H" Tractor. In helping him check it out, we took a look at the transmission oil and I question whether it has ever been changed! What is the best way to flush out the transmission? Can I drain out a little oil and then add something to it to thin it out and run it just a little while before draining, or should I just drain out all the old oil and fill it with Diesel and run it a little and then drain it? Just want to do the best job of cleaning out all the old oil. Thanks for any responses!
- Thread starter Jim R
- Start date
Bob M
Well-known Member
Drain the old oil. Then dump in 5 gallons or so of diesel and drive it around as fast as possible a few minutes. (Or jack the rear end and let it run in road gear). Key is to run it fast to stir up the flush.
When draining recommend jacking the front wheels up a foot or so to facilitate a complete drain. And let it drain for 24 hours or until it stops dripping.
Note: If the tractor has a belt pulley, loosen the belt pulley gearbox mounting bolts then lift it slightly to drain the quart or so of old oil inside.
When draining recommend jacking the front wheels up a foot or so to facilitate a complete drain. And let it drain for 24 hours or until it stops dripping.
Note: If the tractor has a belt pulley, loosen the belt pulley gearbox mounting bolts then lift it slightly to drain the quart or so of old oil inside.
When I fixed my H, I had to take the transmssion ocver off, and I then drained all the 60-year old oil / water / sludge / grease / thick goop. I took a wood slat and pushed the last of the thickest goop out of the bottom, to the bigger drain plug hole. It was really thick. Not saying this diesel idea won"t work, but you might have some reeal thick stuff in there.
Brian Schmidt
Member
Take the top off and pressure wash out all that sludge. It will be perfect then. Some worry about using water. But hey, many of these have had water running around in them for years prior to you owning them.
Dean Olson
Well-known Member
I've done hot water and dawn dish soap several time till it ran clean. That was the cheap and easy way to go. I've also done BobM's recommendation with good result also.
Nebraska Cowman
Well-known Member
What's it look like? If it's black and greasy I'd leave it alone.
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