Belly mower PTO U-joint

BobInOK

New member
Jun 3, 2019
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Catoosa, OK
Seems like everything I look at on this tractor needs attention. Removed the mid PTO shaft and discovered one of the U-Joints feels like it has gravel in it. Looked up the part number 76539-31180 and checked price. Just can't in my right mind pay $100.00 for a danged old U-joint.

Has anyone came up with an aftermarket replacement? Search didn't come up with anything.
 

BobInOK

New member
Jun 3, 2019
79
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0
Catoosa, OK
Searched for the Kubota part number on Oreilly's web site and came up empty. Any idea what part number you used?

I took the bad one apart so I could get some measurements and came up with 20 X 58MM. Closest I could find on the net was 20 X 57mm, when I get a chance I'll double check the 58MM measurement.
 

D2Cat

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Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
13,727
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40 miles south of Kansas City
Bob, do you have an Industrial Bearing or Bearing Headquarters nearby? If you take what you have to them they will cross reference it to something they most likely have on a shelf. If you go to one and they don't have it but can get it, simply have them mail it to you. It'll still be much less cost than a dealer.
 

ehenry

Active member

Equipment
BX22, FEL, BH, 40" pto tiller, 42" Bushog Squealer, pto hole digger, B7300 w/60"
Mar 25, 2014
358
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28
Canton, MS
Look up a MOOG 398 its $36 at Advance Auto parts and $19 on Amazon
 

200mph

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Equipment
L4740-3 Cab, FEL, Fnt Snow Blower L2185, LP Finish Mower, LP Rotary Mower
Mar 3, 2017
1,228
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48
PA
BobInOK, did you ever find a replacement u joint? I'm in the same boat.
Wouldn't it be nice if the OP's completed the thread by posting their resolution!
 

200mph

Well-known member

Equipment
L4740-3 Cab, FEL, Fnt Snow Blower L2185, LP Finish Mower, LP Rotary Mower
Mar 3, 2017
1,228
61
48
PA
BobInOK, did you ever find a replacement u joint? I'm in the same boat.
For what it is worth, I found this u-joint finder for Moog if you know the u-joint type and bearing diameter.

https://www.fme-cat.com/MOOGUjointSp....aspx?Brand=MU

Based on the photo Messick's has for 76539-31180 it looks like a four plain round bearings type.

https://www.messicks.com/part/76539-31180/u-joint-assy

I'm certain a replacement can be found if someone post accurate dimensions and a few photos.

For what it is worth Moog 811 and 812 are used in Metric PTO shafts (Bondioli & Pavesi 1 & Walterscheid 2100)
 

200mph

Well-known member

Equipment
L4740-3 Cab, FEL, Fnt Snow Blower L2185, LP Finish Mower, LP Rotary Mower
Mar 3, 2017
1,228
61
48
PA
BobInOK, did you ever find a replacement u joint? I'm in the same boat.
Kaobrie2, What did you do? Did you ever measure your u-joints to determine an alternative source for the joint?