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Read articles →This is a full hands-on transmission oil and filter change on a 2011 Kubota L3400 HST, part of a 50-hour service series. The owner walks through draining four plugs, replacing two filters (correcting the manual's claim of just one), refilling 6.25 gallons of hydraulic fluid, and checking the sight gauge level, while flagging discrepancies between manual, dealer, and mechanic notes. Best for owners doing this exact service themselves.
Posted by the brandotown channel, an owner documenting DIY maintenance on his own tractor rather than a dealer or professional mechanic.
The manual lists only one filter, but there are actually two: a larger one on the starboard side and a smaller one on the port side, likely a suction and return filter.
There are four drain plugs total: the two main ones the manual shows plus two more at the lowest points of the axle or drive gears.
The manual calls for Super UDT, but the dealer said regular UDT transmission hydraulic fluid is fine, so that is what was used.
About 6.25 gallons drained out and 6.25 gallons went back in to bring the sight gauge to the top of the window.
