Foaming Gear Oil Weirdness

pejepscot

New member

Equipment
Kubota L260
Aug 12, 2014
60
1
0
Topsham, ME
Hi All-
I went to replace the gearcase (transmission/diff) oil in my L260 (it has separate gearcase and hydraulic system). The manual says 18Liters of 80 weight gear oil (4 gallons).

Now it gets weird.... I put the tractor up on ramps, level, and put a 5 gallon pail w/funnel under it to catch the old oil, open the drain and out pours 7-8 gallons of oil. Clearly this is not good when one has a 5 gallon bucket there to catch it. :rolleyes: My shop now looks like the Exxon Valdez went aground in there! The "oil" that came out was opaque tan to light brown color, almost creamy looking) This tractor is "new" to me and I didn't look at the gearcase dipstick before draining.

Anyhow, I clean up and put in 4 gallons of new 80-w90 gear oil in and it is right on the mark on the dipstick and looks good. I take her out for a spin and the new oil is all foamed up and covering the dipstick. I worked it for a couple hours the next day and the foaming is even worse.

Any ideas what is going on?
 
Last edited:

pejepscot

New member

Equipment
Kubota L260
Aug 12, 2014
60
1
0
Topsham, ME
I do not believe that there is a screen in the gearbox. I know there is a screen in the hydraulic side which, on the L260, is a separate system from the transmission.
 

North Idaho Wolfman

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Also it would not hurt it one bit to use the same hydraulic fluid in the gear case, and in most cases it will work better. ;)
 

Russell King

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A few suggestions:

Use cheaper fluid until you are sure that it is water free.

Read this tread for a good way to flush out the pump and hydraulic system (if it is part of what is giving you problems)

http://www.orangetractortalks.com/forums/showthread.php?t=812&highlight=fast+transmission+flush

If it is kept outside - replace seals and such on gear shift levers or water will get back in.

Clean the vent tube on the gear case (if your tractor has one which I think it does)
 

2458n

New member
Jun 21, 2010
129
1
0
covington ohio
I would put the trans/dralic fluid in it from TSC and keep water out of it. The creamy colored drainage probably had water in it and was responsible for the extra volume. Old Ford 8N,s used 90 weight and they often receive the same up grade.