7610 update

[longshot47]

This is my initial post [Always something..]:
Default 7610 leak
Greetings all.
Recently hunted down a primo 2005 7610 HST, 250 hrs, 352 loader, R4's w/chains and a power angle plow. Ran it around awhile the other day and after parking it overnight I noticed what appear to be drops of hydraulic fluid beneath the front hyd. fluid drain plug. Tightened plug securely, ran it again.....and still the leak. Closer inspection suggests the leak to be above the drain plug. Called local kubota guy who says it's probly a rubber type pressure plug in the trans. case which commonly dries out and leaks. Really? 4 years old??

Back under the tractor, I see the plug, above the shafts -which in fact appears to be leaking [sure hope it's not the dreaded 'grass-around-the-shaft' issue].
Kubota guy says a more serious replacement plug is available; replacement is kinda tricky [very confined], and I have to get the machine onto the shop!
Due diligence lead me to the Tractorsmart parts manual download, but I could'nt identify the piece at issue.
What say the board?
Anyone encountered this problem?
Anyone solve it?
How?
I'm thinking a nut-driven expansion plug [but it's going to take mechanical voodoo to get in there and get the inert little thing out.]

Any and all help appreciated.

________________________________________________________

250 views ..... no replies?????
What have I got, doctor?

So here's what;
I started investigating the plug further....it leaked more!
Hunted down the dealer part [code# 6A100-12180 J-830], a simple enough piece that begs owner install.
Drained about 3.5 gallons trans. fluid from front plug [not enough/some mess]
Coaxed the suspect freeze-type, pressure/friction plug from trans. case [plug cooperated with removal]
Put a little Phenoseal around the outer shoulder of the new plug and forced/levered it flush in the case[not the easiest part of this adventure]
Plowed and loader-dozed a 10" snow fall
No detectable leaks at this time.

For the good of the Order:
It would be easy to mis-diagnose this problem as a compromised seal on the main PTO drive shaft, if it wasn't checked closely.
Why did the factory installed plug fail so early?

On it goes....

 

[traildust]

Longshot,
I have the same tactor and loader as you do and so far no leaks. Thank you for posting your experience and if mine starts leaking from that area I now know what to look for.

 

[hr3]

Yes thanks Longshot.. I too have the same unit and will now keep an eye on mine,,

 

[Buckeyeman]

Thanks for the post, I also have a B7610 w/FEL without any leaks thank God, but this is great information to resort back to if any of us experience the same problem.

 

[tomf]

Last winter, after a very cold night (-20), this plug popped when I was warming up my B2400. I had hydraulic fluid all over the ground. I think I had some water in my hydraulic fluid which froze causing an over-pressure. After pushing my B2400 into my warm garage, I put the old plug back in. Ever since, I've had a small leak coming from that area. I was looking at it today. After cleaning the area there seemed to be a small glistening around the edge of the plug. I'm not 100% percent sure if its where the fluid is leaking from but I'm going to replace it anyway.

It's very confined. I hope I won't have too much trouble. Nice to know someone else was able to replace it.

 

[tomf]

What type of Phenoseal did you use? Thanks

 

[longshot47]

tomf-
The Phenoseal product I used was the lifetime adhesive caulk [not available in Kalifornia]. I believe that any of the quality gasket forming goo or the high temp, tube type sealants [not epoxy] would also serve well. I further suspect that it is actually the friction/force fit that creates the seal [I would rather have seen threads].
The working area is impossibly confined, but as I recall, the key to installation was a careful levering action with a short pry bar. Be aware of correct seating alignment as force is applied.
Go for it

 

[Carl_NH]

Hi all - Longshot or others if you are around?

I have a friend that has the B2100 - called me and said Hyd fluid is leaking on the floor. He had changed fluid and overfilled by a 1/2" on the stick.

So went to see it and looked where the leak was originating and at first thought it was the drive shaft seal. Wiped area down and ran the tractor - no leaks from seal, turned off and a very slight seapage is occuring around the "plug" you refer.

It indeed is a tight clearance so told the fellow to run it and keep a pan under when not running. It has slowed down not to a 1/4 cup a week and is still overfull by a 1/4".

So he went to dealer MB Tractor in NH and guess what they want to do! Split the tractor, replace the plug, AND the clutch and the gaskets - estimate $1500-2000 range - wow. Then they also said, well you know if you are running it and that plug pops out you could lose your transmission and HST pump - thats even a more $$$ fix!

So we are watching and keeping an eye on the fluid level for know, and I said get a plug and 5 gal SUDT and we will change it sometime later in the summer.

Anywords of wisdom how to contort your fingers or access that space? It is fairly tight but compared to my B21 (it is impossible to get to due to the frame and plumbing) the B2100 is no too bad.

Thanks in advance.

Carl