I purchased a used M7060HDC12 about 18 months ago with 1100 hours. I have noticed an intermittent vibration in the rear end, and if pressed, would say it is on the right side. This occurs at all speeds, and feels like I am going over highway rumble strips. It occurs as the wheels (ag tires) rotate. Vibration interval seems consistent - more frequent at higher speeds, and less so at lower speeds. It has not gotten worse or better. The rear wheels have wheel weights - not filled with fluid. I keep around 15lbs pressure in the tires. I have pulled the hydraulic filters and there are no signs of metal in the oil or filter. An independent mechanic looked at it and is baffled. Local dealer won't service it as I did not buy it from them. Is this a tire issue? I think the tires are the orignal OEM, and the tread is even with little wear on them. Wheel lug nuts all snug. Any ideas? Thank you!
M7060 mystery vibration
- Thread starter DarwinsDayOut
- Start date
1st.....If the local dealer IS a Kubota dealer, they're supposed to service Kubota !
2nd, any chance the right brake is slightly on ?
2nd, any chance the right brake is slightly on ?
The local dealer is useless. They are happy to sell equipment, but have zero interest in providing service. I am still waiting - 1 full year - to have a new 10' Bushhog 2310 repaired under warranty that I did purchase from them. Tractors purchased elsewhere have to wait until the shop is current with repairs which in effect means not gonna happen. The tractor has to remain on their lot until they get to it.
I had not considered a brake issue. Both brakes work as intended. Same pedal travel for both. I'll explore that further, though. Sounds plausible.
Thank you.
You might also consider cab support bushings. I've seen cases where deteriorated bushings can cause some strange effects. Noises, vibrations rattles, clunks, ETC. Your vibration may not be in the tractor but only in the cab. I would take a large prybar, go around and pry upwards on all four corners of the cab as close to mounting bolts as possible to see if one or more of the bushings seems looser or different from the others.
Russell King
Well-known member
Lifetime Member
Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Check that wheel lug nuts and weight bolts/nuts are all torqued properly.
Are the tires filled? if so are the over full or under full and the fluid is sloshing over the top of the rim? I don’t know if that could happen but I can see it making odd vibrations if it did!
Are the tires filled? if so are the over full or under full and the fluid is sloshing over the top of the rim? I don’t know if that could happen but I can see it making odd vibrations if it did!
I'll check the cab mounts later today when I am back at that farm. I had not considered that at all. Many thanks for the suggestions.
The tires do not have fluid, but I do have wheel weights. All the nuts/bolts are tight to torque specs.
Sounds too simple, but are your 3 point arms hitting the inside of your rear tire?
That will have the effect you described to a T.
That will have the effect you described to a T.
I checked the 4 cab mounts, and all of them are intact and tight. No issues there that I can see, but thank you for the suggestion.
I am hopeful it is something simple; however, I don't think it is the lift arms. This issue is noticed at all times, regardless of the implement or no implement. I generally keep the arms in with the pins in place on the stabilizer bars when moving the tractor. Thank you, though. Sooner or later we'll sort this out.
Possibly bad bearing? Might raise it off ground and set on cribbing then listen at various points with stethoscope, or poor mans wood handle screwdriver. While it's in the air check for warped wheel or poorly seated tire bead.
Does this happen on pavement, dirt or both?
You say it happens at all speeds but does it change frequency with ground speed? Does it do it in every gear? Different engine RPM’s?
Edit. Reread your first post. Definitely raise it up on blocks and see if you can isolate it from left or right side with a stethoscope.
You say it happens at all speeds but does it change frequency with ground speed? Does it do it in every gear? Different engine RPM’s?
Edit. Reread your first post. Definitely raise it up on blocks and see if you can isolate it from left or right side with a stethoscope.
Thanks for joining the discussion, Jason. Much appreciated. The vibration seems to be relative to ground speed rather than the gear or engine RPMs. It is apparent in all gears and all speeds. I notice the vibration as the rear wheels turn. It lasts a few seconds (depending on ground speed), then smooths out for roughly two or three times longer than the vibration lasts. Then repeats.
I feel it on dirt, gravel, and pavement. It is more noticeable on pavement as the surface is smoother, but I don't think it is worse or better depending on the surface.
Will do. Between your post and others, I need to get it off the ground and investigate further. The fun never stops.
Hopefully it’s not an issue with the plantary gear teeth. Judging how you discribe how the sound changes with the tire rotation.
$1777.00 + labor!? Ouch. Maybe I should start with a priest to perform an exorcism.
Darwin, did you ever get this squared away?
I have what seems to be the same issue. Describing it as driving over rumble strips is a perfect description. I bought my M7060HDC12 new this year (2025). I noticed while mowing across hillsides the tractor would rumble for 10 or 30 feet then stop but it would occur the next pass as well...but not always. I have the radial Ags which are more square topped than the bias tires so I though maybe it was the tire cleats slapping the ground on the downside of the steep hillside (no roll-over threat). Now it tends to do it on level ground occasionally so I doubt its the tires edges. I have filled tires, iron weights, trans oil filters are changed and I saw minimal metal shavings accumulated. Also, I use the PTO in economy mode and run at ~1800rpm (PTO 540). Are you getting the rumble using the PTO? PTO in economy mode?
Appreciate your feedback.
Could one of your tires have become out of round or developed a hernia?
Sometimes just due the sitting especially if heavy weights are on them R1's can bulge and get out of shape. From what you describe, this may have occurred.
Sometimes just due the sitting especially if heavy weights are on them R1's can bulge and get out of shape. From what you describe, this may have occurred.
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Maple, I haven't noticed anything odd about the tires. When I thought it may be a tire issue I looked them over. I'll take a better look at the inboard side of the tires later today.
Try adjusting the front axel pivot pin, if it hasn’t been adjusted in a while you will feel intermittent vibrations. Check your manual for recommended adjustment specs.