Kubota Front Axle Vent
- Thread starter PsRumors
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oosik
Epic Contributor
My 2009 M6040 4WD does not have a front axle vent. Its got an upper plug to fill and a lower plug to verify fill level. Both on one side. There is a drain plug at the bottom of the axle gear case on each side. The front axle gear case and front differential case are continuous. Pull both drain plugs and wait, wait, wait. Draining can be a slooooow process.
Bought the tractor new and had no leakage problems on the front axle. The pressure build up is REALLY SLIGHT and, obviously, not enough to blow oil out thru any seal.
Bought the tractor new and had no leakage problems on the front axle. The pressure build up is REALLY SLIGHT and, obviously, not enough to blow oil out thru any seal.
ruffdog
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This guy went through the time to make a special fill plug and hose to vent the front axle. When he was routing the hose, he discovered the factory vent hose.
greenrider1
Silver Member
The axle on my L5740 isn't vented. It's always under pressure when I remove the check plug. Just double checked it and it had quite a bit of pressure just sitting in my barn at 60 degrees. I'm guessing it would have quite a bit more on a summer day after it's been working. I should probably drill and tap the fill plug to add a vent hose.
oosik
Epic Contributor
I've checked mine after three hours of grading my "mud hole from Hades" in my driveway. Yes, there was slight pressure. Not that much different than what I found yesterday. Yesterday, the tractor had been sitting - unused - all winter.
greenrider1 - I would recommend that you NOT try to vent the front axle. Couple reasons - Kubota would have vented it if necessary, read Peter 315 post # 7, how will you figure out the vent hose. Remember the front axle can go thru some fairly serious vertical oscillations. If you vent from the fill plug - the hose going up to somewhere high under the cowling is alway subject to being torn off.
greenrider1 - I would recommend that you NOT try to vent the front axle. Couple reasons - Kubota would have vented it if necessary, read Peter 315 post # 7, how will you figure out the vent hose. Remember the front axle can go thru some fairly serious vertical oscillations. If you vent from the fill plug - the hose going up to somewhere high under the cowling is alway subject to being torn off.
oosik
Epic Contributor
CORRECTION!!! The front axle of my M6040 IS vented. I looked at the video from ruffdog. Went back out and found the U-shaped steel pipe where the rubber vent hose terminates. I was able to blow a small amount of air thru the system - with the fill plug removed.
The vent worked a whole lot better after I pulled all the Mud Dobber "snot" out of the end of the steel pipe. I will be putting a small external filter on the end of that steel pipe.
The vent nipple is right in the dead center - top of the front axle. Saying it is difficult to find is the understatement of the year. I would have NEVER found it without looking at the video clip.
greenrider1 - look at the video clip and then look for the U-shaped steel pipe. More than likely - yours is already vented.
PsRumors - yours is most likely already vented. Find that U-shaped steel pipe - look at the video. Perhaps the Mud Dobbers have done a job on your also.
My little U-shaped steel pipe is right behind the battery - just in front of the main radiator - attached near the top of the hood support cage.
Right hand side as you stand in front of the tractor - looking towards the rear of the tractor. Photos will follow.
The vent worked a whole lot better after I pulled all the Mud Dobber "snot" out of the end of the steel pipe. I will be putting a small external filter on the end of that steel pipe.
The vent nipple is right in the dead center - top of the front axle. Saying it is difficult to find is the understatement of the year. I would have NEVER found it without looking at the video clip.
greenrider1 - look at the video clip and then look for the U-shaped steel pipe. More than likely - yours is already vented.
PsRumors - yours is most likely already vented. Find that U-shaped steel pipe - look at the video. Perhaps the Mud Dobbers have done a job on your also.
My little U-shaped steel pipe is right behind the battery - just in front of the main radiator - attached near the top of the hood support cage.
Right hand side as you stand in front of the tractor - looking towards the rear of the tractor. Photos will follow.
