Hydraulic Leak

[Russell King]

@Smokey160
Please verify a couple of things.
1) the oring in post #20 picture is the new o-ring and after you had clamped it down and ran tractor and there was still a leak.

2) The tractor was fine and then a “sudden” leak started AND you verified the leak is from this joint, not some point above it.

@TheOldHokie and @North Idaho Wolfman
I don’t see any crack and the o-ring in post #20 seems to be a proper fit. Do you concur? I know NIW already stated ”no crack” but don’t think I saw a statement from TOH about it.

But I have no idea why it would be leaking now unless it was not properly installed and torqued properly. I guess you could create a leak by tightening one bolt down before installing the other two but that is grasping at a straw to identify a leak potential cause.

@Smokey160

I suggest you take the pipe and the o-rings to the dealer and ask their experienced mechanic if they see a problem with the pipe or the O-ring. Take the original o-ring if you still have it.

 

[Smokey160]

OH NO I MESSED UP!

You are right I gave you the wrong part number that was for the suction side not the pressure side.

The pressure side is 04810-00200

Sorry for confusing you!

No worries. So I got the 04811-00200 from the dealer to install. My other question before I do something stupid is there a specific tork for the three bolts, or just tighten them stug

 

[TheOldHokie]

No worries. So I got the 04811-00200 from the dealer to install. My other question before I do something stupid is there a specific tork for the three bolts, or just tighten them stug

I am sure there is a torque figure somewhere but you probably cant get a torque wrench on those bolts. Box end on a combo wrench and snug them down. All you need is tight enough to not come loose.

Dan

 

[Smokey160]

No worries. So I got the 04811-00200 from the dealer to install. My other question before I do something stupid is there a specific tork for the three bolts, or just tighten them stug

So, I don’t know what’s going on but the 04811-00200 is definitely not the right one.

I am sure there is a torque figure somewhere but you probably cant get a torque wrench on those bolts. Box end on a combo wrench and snug them down. All you need is tight enough to not come loose.

Dan

so I guess I’m confused at this point. Got what I thought was what you mentioned on the part#04811-00200 bit you said 04910-00200 which is what I originally asked for and they said the number had been changed to 04817-00200 which would fit of if I manipulated it little. I’m at wits end with this thing.

 

[Hugo Habicht]

Forget Kubota in this case.

Measure the outside diameter of the groove and its depth. Multiply the depth by 1.15 to 1.20. That gives you the o-ring cord diameter. Subtract that twice from the outside diameter and you have the inside diameter (O-rings are normally inside diameter x cord diameter, Chinese suppliers use outside x cord).

With the dimensions you go to any Micky-Mouse hydraulics shop and get your o-ring. NBR or Viton material should be fine, Shore-A 70 or harder should do.

 

[TheOldHokie]

So, I don’t know what’s going on but the 04811-00200 is definitely not the right one.

so I guess I’m confused at this point. Got what I thought was what you mentioned on the part#04811-00200 bit you said 04910-00200 which is what I originally asked for and they said the number had been changed to 04817-00200 which would fit of if I manipulated it little. I’m at wits end with this thing.

Thats obviously too big. Listen to Hugo. I am confident its a standard o-ring. Metric o-rings are designated as iD x cross section thickness. Example: 25x3 = 25mm ID x 3mm thick. Kubota should be putting that info in the parts book like most other OEMs. But then they could not price them at #100x the market price.

Dan

 

[North Idaho Wolfman]

So, I don’t know what’s going on but the 04811-00200 is definitely not the right one.

so I guess I’m confused at this point. Got what I thought was what you mentioned on the part#04811-00200 bit you said 04910-00200 which is what I originally asked for and they said the number had been changed to 04817-00200 which would fit of if I manipulated it little. I’m at wits end with this thing.

Sorry you must have missed post #38 and #39

#04811-00200 is the suction side ( flange on the other side of the pump).

# 04810-00200 and 04817-00200 are the same part number, and the one you need.

When installing that O-ring it should fit tight to the outside of the groove and not tight to the inside of the groove, and sometimes it takes a little manipulation to get it to say in place.
Grease also helps.
Just snug up the bolts, not too tight.
If you get it all back together and it still leaks get a picture or better yet a video of it leaking.