Leak in rear remotes

[Redbeard81]

I bought a Kioti CK2610 about a year ago. The dealer installed a third function kit and rear remotes for me prior to delivery. I've been using the third function to run a grapple for a while, but I just recently tried to use the rear remotes for the first time for a hydraulic top link. As soon as I plugged it in and tried a test, hydraulic oil blew out from beneath the seat.

I'm completely out of my element here but I'll describe what I found. There's a rubber hose attached to the block with the rear remote levers. When I move the lever, I can see this hose pushing away from the block (circled in the attached photos with an arrow showing the direction of movement) and allowing oil to spray. I pulled the seat off and found that the pipe clamp wasn't super loose, but I was able to crank it down tighter. I also noticed that the rubber hose in question is constricted (highlighted in an attached image) as it bends down to route underneath the block.

Before I put this all back together, I'm curious to know what that particular hose is for (versus the hard lines running to the remotes) and whether the constriction in the hose might be contributing to its working loose?

Any advice would be appreciated.

 

[ptsg]

That rubber hose is the return from the valve to the tank/transmission housing.

Basically when you move the lever to extend the top link, the oil on the rod side has to go to the tank, which should have a path with absolutely no restriction. What I think it's happening is that the kink in the hose is creating enough restriction that this hose sees too much pressure and most likely blew up. This hose is not mean to see much pressure at all.

Looking at parts diagram from Michigan Iron and Equip website, it seems that Kioti have revised that part and included a 90 degree fitting to avoid that kink in the hose. You may want to contact your dealer about your that and about your issue, regardless.

 

[Midniteoyl]

What ptsg is talking about. Look at the 'New Revision' box and compare..

https://www.michiganironandequip.com/OEMpartfinder#/Kioti_Tractor/HYDRAULIC/DOUBLE_ACTING_VALVE_GROUP_TC2-G446008/01-91%7c%7eCK2610H-M-HYDRAULIC/0191CK2610H0073/y

 

[Redbeard81]

Thanks guys. This is very helpful. I'll see what the dealer has to say.

 

[Threepoint]

OP, this is an interesting discovery! Please keep us posted on resolution. My 2018 CK3510SE HST has two dealer-installed rear remotes. Don't know if the return-to-tank plumbing is the same as yours, but without checking I suspect it is. So far so good, with heavy use of top n' tilt cylinders.

Ptsg and Midniteoyl, good detective work!

 

[Redbeard81]

OP, this is an interesting discovery! Please keep us posted on resolution. My 2018 CK3510SE HST has two dealer-installed rear remotes. Don't know if the return-to-tank plumbing is the same as yours, but without checking I suspect it is. So far so good, with heavy use of top n' tilt cylinders.

Ptsg and Midniteoyl, good detective work!

It took a month, but the dealer finally got the updated parts from Kioti. They came and took the tractor for a couple of days to do the install, no charge. The remotes work great now.

If anyone is on the Olympic peninsula in WA, this dealer (Peninsula Topsoil) has been great. Their communications are a little sparse but they've been more than fair to deal with.

 

[Threepoint]

Redbeard81, thanks for the report. Glad you're back up and running! Sounds like your dealer took care of you.

If I'm looking at your before-and-after photos correctly, and the parts finder diagram that Ptsg and Midniteoyl linked to on the MIE website, it looks like all Kioti did was replace the straight drain-hose connector (ref. 13, part no. T4715-47071 in the diagram) with a simple 90 deg. O-ring-boss elbow. A very logical solution, but I'm not sure why it took Kioti a month to get that fitting to the dealer. A local hydraulic shop probably stocks it, or could make up an equivalent easily. I'll be curious if Kioti changes the parts diagram in the future to show the part change.