I went to local Kubota dealer and the guy didn't have SAE 90. Instead I got SAE 80W-90. He said this is what everyone puts in the gears.
I just drained my transmission and out comes this opaque, tan colored stuff that is heavy viscosity. I'm looking at this new gear oil which
looks more like motor oil and am thinking this is lighter and am wondering if this is gonna be OK. Should I go ahead with it or should I be out looking for SAE 90 somewhere else?
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Transmission Oil
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- 10+ Years
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- Tractors Owned: 1950 Farmall Cub
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Re: Transmission Oil
Sounds like your trans had some water infiltration. If it were my tractor, I would flush/wash it out with kerosene or diesel before refilling. Early model cubs used the gear oil, later models used HY-TRAN. Capacity 3 1/2 pints.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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Re: Transmission Oil
80W90 is what you find today. You either use it or Hy-Tran equivalent. You old oil looks that way because it is contaminated with water.
I see Stan beat me to the same answer.
I see Stan beat me to the same answer.
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- 10+ Years
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Re: Transmission Oil
It's a 1950. If I were to wash out with kerosene before putting in the 80w-90 what's the method of doing the wash-out?
Do I replace the drain plug, dump in a pint or two of kerosene, wait awhile, and drain out?
Do I replace the drain plug, dump in a pint or two of kerosene, wait awhile, and drain out?
- Glen
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Re: Transmission Oil
Hi,
The guys on here say to put in kerosene up to the level plug on the left side of the transmission, put the plug in and drive the Cub for 5 minutes. Driving in 3rd gear would throw the kerosene around the most, washing the inside of the case some.
Then drain the kerosene out, and put in the oil.
The oil should not be thick, like the oil and water mixed together look.
The guys on here say to put in kerosene up to the level plug on the left side of the transmission, put the plug in and drive the Cub for 5 minutes. Driving in 3rd gear would throw the kerosene around the most, washing the inside of the case some.
Then drain the kerosene out, and put in the oil.
The oil should not be thick, like the oil and water mixed together look.
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Re: Transmission Oil
Alternate cleaning, pull the shifter cover and use a garden sprayer to it down inside with kero/diesel while it drains out the bottom. Probably will need to replace the shift cover gasket. Take a look at this post about a week ago: viewtopic.php?f=1&t=96900&p=762999#p762999Glen wrote:...put in kerosene up to the level plug on the left side of the transmission, put the plug in and drive the Cub for 5 minutes...
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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Son has a 1957 Cub with fast hitch, snowplow, 194 plow, disk, carryall, Mott fast hitch flail mower, and windbreaker
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Re: Transmission Oil
Yep pull the cover. It's 8 bolts I think. Then you can look at the gears as well. Easy peasy.
- Glen
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Re: Transmission Oil
Hi,
Removing the shifter and cleaning in the forward part of the transmission, where the gears are, doesn't clean in the rear part of the case where the differential is.
Removing the shifter and cleaning in the forward part of the transmission, where the gears are, doesn't clean in the rear part of the case where the differential is.
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Re: Transmission Oil
My fcub tranny looked like the worst I’ve ever seen and I drove many 4x4’s like u boats in the past. I drained the tranny, added some kerosene and to my surprise came out squeaky clean. I thought it was a goner so I already had Ralph ship me another fcub tranny. I like having extra parts. I have a complete 154 on the shelf with three pairs of finals. Ever try to buy one part for a final drive? I buy from Hamiltonbobscubs too saving my parts supply.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Re: Transmission Oil
I used OMC marine lower unit oil. It is supposed to do better around water. So far so good. Every time I have drained it, there has been signs of water. I rinsed it out with press wash, kind of like charcoal lighter fluid. Filled it drive forward a few feet in each gear and reverse. It looked like new through the filler hole.
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