B9310 front PTO clutch won't stay engaged

EnoreeG

New member

Equipment
Kubota B6100E 2wd, Woods 348 belly mower
Aug 19, 2014
6
0
0
Travelers Rest, SC
I have a 1980's vintage Kubota B6100E diesel, 2wd with a Woods 48 inch belly mower attached via belt to the front PTO kit clutch. I used the mower for several years until the shaft spines became so rusted they had insufficient connection to the crank-shaft flange. I couldn't find a replacement shaft, so I towed a pull-behind mower for a few years, leaving the belly mower in the barn.

Finally I just had a new shaft made with new splines mating to a new crankshaft flange.

Now the new shaft on the B9310 clutch assembly is connected, but the clutch won't stay engaged.

When I throw the switch, it runs for 1 to 2 seconds then disengages. And not always. Mostly turning the switch on does nothing. This is whether or not a belt is attached, so it isn't the resistance to the clutch, or even the RPM that seems to kill the engagement.

I can test the load on the clutch by resting my foot on the clutch and feel whether it engages or not. When it does, it still disengages in a few seconds. Most times it's dead.

Any ideas? I haven't replaced the switch or the wires yet. It seems to be more time/load related than a short in the wiring but I could be missing something.
 

D2Cat

Well-known member
Lifetime Member

Equipment
L305DT, B7100HST, TG1860, TG1860D, L4240
Mar 27, 2014
14,393
6,670
113
40 miles south of Kansas City
Doesn't the switch power the electro magnet in the clutch? Maybe it's just too dirty from years of not being used. Clean everything real good and make sure the wire is a good connection.

If that doesn't make a difference you probably needing a new clutch.