Over heated trans on a Kubota BX25D

sahonen

New member

Equipment
Kubota BX25
Jul 18, 2026
6
1
3
MN
My fan broke and I didn't notice so the trans overheated and dumped out the trans fluid around the filter. I got a two part fan and installed it. When I add oil it comes out around the oil filter. I inspected the surface and the Kubota filter and this time i snugged it up with a wrench. I added more fluid and the filter tried to hold and hydrostatic oil fluid sprayed out around the oil filter again. Does anybody know what increased the pressure to the Filter. What did I break when it overheated and spilled out around the trans filter?
 

Russell King

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L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
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113
Austin, Texas
Perhaps the old filter gasket is still on the filter mount?
 
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North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
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Sandpoint, ID
Pressure relief valve is stuck or broken.
 
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sahonen

New member

Equipment
Kubota BX25
Jul 18, 2026
6
1
3
MN
No the surface was clean and I put oil on the filter gasket. Is there a reason the pressure increased at the oil filter? to blow the seal?
 

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
7,866
3,066
113
Austin, Texas
No the surface was clean and I put oil on the filter gasket. Is there a reason the pressure increased at the oil filter? to blow the seal?
See post #3 for the probable reason.
 
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sahonen

New member

Equipment
Kubota BX25
Jul 18, 2026
6
1
3
MN
My fan broke and I didn't notice so the trans overheated and dumped out the trans fluid around the filter. I got a two part fan and installed it. When I add oil it comes out around the oil filter. I inspected the surface and the Kubota filter and this time i snugged it up with a wrench. I added more fluid and the filter tried to hold and hydrostatic oil fluid sprayed out around the oil filter again. Does anybody know what increased the pressure to the Filter. What did I break when it overheated and spilled out around the trans filter?
I removed the pressure relief valve and cleaned it with brake cleaner. It was clean. I then removed the charge something which was a allen wrench by the filter and it was clean and i sprayed brake cleaner. I put back my new filter and now it works. There was pieces of wood on the far side of the charge something was the only debre I found. I must have loosed something. Thanks for the your suggestions.
 
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