Problem kubota 4 wheel drive
- Thread starter cowgirl
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RCW
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Cowgirl - -
Welcome to OTT!
You need to much more specific to get help:
What are we talking about here? Tractor, RTV, SSL, etc. Model number?
If it's a tractor, does it have a loader or backhoe on it?
What are the "couplers" you changed?
What oil level?
When you say the 4WD "howls", what do you mean by that?
Lot of smart folks here are willing to help.
A really smart guy here often says the quality of the answers are driven by the quality of the questions.....
Welcome to OTT!
You need to much more specific to get help:
What are we talking about here? Tractor, RTV, SSL, etc. Model number?
If it's a tractor, does it have a loader or backhoe on it?
What are the "couplers" you changed?
What oil level?
When you say the 4WD "howls", what do you mean by that?
Lot of smart folks here are willing to help.
A really smart guy here often says the quality of the answers are driven by the quality of the questions.....
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Kubota 8540 4 wheel drive has ft loader 1543 replaced coupler on the front propeller shaft that was damaged used OEM part from Kubota
Was a simple fix But now in forward FWD it howls but is fine when in reverse.oil is new an air pressure in tires 36lbs
Thanks for your help
Was a simple fix But now in forward FWD it howls but is fine when in reverse.oil is new an air pressure in tires 36lbs
Thanks for your help
North Idaho Wolfman
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Is it possible that the coupler was damaged because something in the front drive train is damaged?
Not that we know of.no damage. We do use the tractor to bale round bales and move them from the field to hay barn 5x6 about 1000 to 1100lbs
Have Maintained all maintanceoil all fluids
With t&e damaged coupler it happened quickly but did not make that loud. Noise
Have Maintained all maintanceoil all fluids
With t&e damaged coupler it happened quickly but did not make that loud. Noise
CV Joint or U joint? Did you lube the new joint?
Is it shielded? Sheild on correctly?
Or are you talking about the slip joint "coupler"?
Is it shielded? Sheild on correctly?
Or are you talking about the slip joint "coupler"?
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Got it. Slip joint coupler.
(138) How to fix Kubota 4X4 drive coupling. - YouTube
Roll pins not deep enough or shield bolts too tight.
Checked roo pins they are correct the shield bolts adjusted and still sounds like a wolf howling
Put the tractor in 4 whell in reverse went through all 8 gears and wirks great no sounds.
I am guessing it did not make the noise before you replaced the coupler ? How was the old coupler damaged ? were the splines wore out, if so, new coupler splines mated to worn shaft splines may make noise. Some pictures of the old coupler, including the splines would be great. Does it make the noise in 2 wheel drive ?
The damaged coupler splines were only damaged where they aligned with the pinion spline when I jacked one front tire off the ground the shaft spun freely in 2wheel drive ..when shifted into 4 wheel it locked up this was after I replaced new coupler. The tractor operates great in 2 wheel drive.also operates great in 4 wheel drive in reverse through all 8 gears
Thanks for your help!!
Thanks for your help!!
Tractor made no noise before ..when approaching the hayringwhere it was soft the front wheels quit turning
Made no noise before coupler was worn where it aligns with the pinion the pinion appears to have no damage to the splines. Tractor runs in 2 wheel drive no problems when in 4 wheel drive works well in REVERSE..going through all 8 gears
Thanks Woodman
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
There are 21 sub models of the M8540 so your going to have to be a little more specific or give me the serial number in order for me to give you the proper advice on what, and how to look, for your problem.
My best guess is something broke in the front diff or drive to make it snap the coupling.
And a broken drive part might only make noise when driven (4wd) not just slidding along (2wd).
My best guess is something broke in the front diff or drive to make it snap the coupling.
And a broken drive part might only make noise when driven (4wd) not just slidding along (2wd).
The propeller shaft only has splines and couplers no u joints
What u joints are you referring to..I have watched the video in 8, and there is no referral to ujoints
Question could the spring pins on the couplings do they need to be aligned for balance
Thanks again
Sorry, I was trying to clarify what you said about couplers. To help the poster understand. I now know that there are no U joints. But there should be from the factory.
I don't associate the term "couplers" into driveshaft terminology. No matter what K calls them. It's a slip joint in mechanical terms.
Overall, it's a relatively sound design except for the fact that frames twist under load. And that's what causes the splines to disintegrate over time. In my opinion, K should have put in constant velocity or U-joints. with a mid point slip joint.
Bottom line, I see what you are doing and am trying to help with a solution. I'm thinking driveshaft - shield misalignment, but pictures would help. Actually, a video would be priceless.
Is it a sheet metal sound or a gear crunch sound?
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