B2650 Hydraulic leak near rear axle when curling the bucket

   / B2650 Hydraulic leak near rear axle when curling the bucket #1  

Porchfan

Silver Member
Joined
May 11, 2013
Messages
125
Location
Oak Ridge, NC
Tractor
2013 Kubota B2650 HSD, 2020 BX2380, JD LX-277 lawn tractor 2000
I got an hydraulic leak when I curl the bucket. It happened after I was diggin up some soil. Here's a video of the leak. Take a look. Any suggestions? I have an email into the dealer. I'm wondering what he's gonna suggest...
 
   / B2650 Hydraulic leak near rear axle when curling the bucket #2  
Do you have rear remotes? How about a close up photo of the leak area? Offhand, that looks like the location where power beyond would run from the loader to a factory rear remote kit. Looks like either the fitting is loose, or maybe the power beyond adapter (which routes to the next in line -- perhaps 3-pt) is leaky. Need a close up photo of the leak point, as well as specific location on tractor.

Could also just be the main hydraulic block, but I can't tell from the movie. Either way, probably just a loose fitting or bad crimp, or busted hose. If that happened in conjunction with heavy loader work, maybe your relief valve is busted or not set right.
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#3  
No I don't. However, I do have a front3rd auxilary valve controlled by a button. Here's a closer look. It looks to me this might be an o-ring seal ....
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#4  
The loader control valve is leaking. It looks like it's leaking at item (1) in the picture at the top left of my shop manual for the B2650.
That looks like the pump port. My guess is that's at the highest pressure. It only leaks when I curl the bucket though. It might be that this port was removed when the dea;er added the 3rd function remote a couple months back.... IMG_3180.jpg
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#5  
Here's the servicing section of the loader valve. looks like the issue could be one of 7 parts. My guess is it's the o-ring (2) or the poppets. I'm not sure whta a poppet does. Time to find out....IMG_3185[1].jpg
 
   / B2650 Hydraulic leak near rear axle when curling the bucket #6  
So the leak point looks like a banjo bolt fitting. Usually they have a crush washer (often copper). You could try snugging up the bolt and see if that does the trick. Otherwise you will probably need to put a new crush washer in there.
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#7  
The fix is covered under warranty. The dealer told me it's probably the o-ring. I'm gonna pick up a couple washers and an O-ring this afternoon and see if thy does it. If it doesn't work, then I'll let the dealer fix it for free. I'd rather try the simple fix myself than to drag the tractor the 20 miles to the shop
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#8  
Simple fix. The o-ring towards the body was not put on there correctly when they added the 3rd function. It took 5 minutes to fix. It definitely looks pinched and finally failed at that point.
 

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   / B2650 Hydraulic leak near rear axle when curling the bucket #9  
Good job and thanks for the videos, it could help someone out with same issue.
DevilDog
 
   / B2650 Hydraulic leak near rear axle when curling the bucket
  • Thread Starter
#10  
Thx. When I have issues I will post pics and videos every time. I use other videos and forums to fix just about anything you can think of. The Internet is awesome if used correctly......................................On this, The shop mechanic told me to put a little grease on the o-ring when installing it. That kept it from falling on the ground. You do NOT want to get the it dirty. Also - The breakout pic above from my shop manual does not show how the 3rd function is attached. As a result, the only thing other than the banjo fitting were two o-rings and the banjo bolt. There is one o-ring at the head of the bolt and another at the housing flange and banjo fitting. They are different sizes. The dealer gave me two of each and I did it myself. It was easy once the wheel a was off.
 

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