Kioti 4010 HST grinding from rear wheels

[TXBeeMan]

Howdy everyone. I have a Kioti CK4010 HST that after sitting for about a month has a grinding noise coming from rear wheel area. I checked 4x4, PTO and rear dif lock and have them off. Weird it worked great when i mowed last time and parked it. Now statted it and grinding. Any ideas on what it could be? I also checked fluid and all seems clean and right where it should be. Any help is appreciated.

 

[K5lwq]

Possibly one or both of the brakes are not releasing. Do you set the park brakes when you park?

 

[TXBeeMan]

Not usually but worth a look. I will check that this evening. Hope that’s it. A trip to the dealership always ends in a ton of money.

 

[paulsharvey]

So, does it grind when moving straight forward/backward, or only while making a turn? Yiu check front axle gear oil level? Have you swapped the axle oil from the dealers hydralic fluid to a heavier gear oil yet? Reason I ask, it doesn't take much of a minor seal issue to leak the hydro out, but gear oil even sitting for weeks, I doubt it would leak completely dry. Maybe a axle fluid plug came out?

 

[TXBeeMan]

Well wasn’t the brake. Seems like it has to do with positrack handle. The linkage is bent so took it off but doesn’t matter if I move the gear underneath to the off or on position still get a grinding like it’s trying to engage. I will go buy a new linkage bar but wonder if it’s somehow stuck in the in-between. Real pain is I can’t load it on trailer by driving it. Guess the ole slow and steady come along. Don’t want to grind those gears down and cause damage if I haven’t already.

 

[TXBeeMan]

And to answer your question it’s only forward and backwards. Definitely from rear wheels. I had a front axle repaired a year ago and then saw I had a leak from left front tire. Took it off and all the hub bolts were hand tight. Hard to get good work done these days. Tightened them up and just added new oil. No I haven’t gone with a heavier oil. Just use what manufacture recommends. But guess that would be a good start to change out the hydraulic fluid and filter. What oil do you recommend going with? I live in Texas so it’s hotter than a ghost pepper right now.

 

[paulsharvey]

And to answer your question it’s only forward and backwards. Definitely from rear wheels. I had a front axle repaired a year ago and then saw I had a leak from left front tire. Took it off and all the hub bolts were hand tight. Hard to get good work done these days. Tightened them up and just added new oil. No I haven’t gone with a heavier oil. Just use what manufacture recommends. But guess that would be a good start to change out the hydraulic fluid and filter. What oil do you recommend going with? I live in Texas so it’s hotter than a ghost pepper right now.

For the front axle only, the book list 80/90w gear oil or hydralic same ad transmission. The general wisdom is swap front axles to gear oil.

Back to your issue; it could be brakes stuck on. Straight forward or backward would not be diff lock. Any chance something is rubbing?

You don't want to swap hydro un the transmission for gear oil; that's only the front axle.

My Ck2610 is similar machine, But I don't have split peddle brakes; I think one of the higher trim models of CKs did; so if yours has split brakes, make sure both are released.

Edit; I didn't see the other post; about it being the diff lock lever. If it was trying to engage, yeah, that would grind. Mine, you have to actively step on the diff lock lever to engage it, and then spring tension disengages when you lift your left foot up. If your somehow got jammed half way in/out of diff lock;... Try placing the HST (if yours is HST) in neutral, machine off, brakes off, and use the wheel to rock the machine, and see if it still binds. Also, you could jack up the rear (be very careful, as the front axle will pivot) and hand spin the wheels. Getting the wheels off the ground may allow you to easier engage/disengage the diff lock.

 

[paulsharvey]

I'm not 100% sure I understand the "positrack handle"; are we talking about the same thing; the diff lock on the left side of the seat, at floor level?

 

[TXBeeMan]

Yeah mine only has single brake. I will take a video of it and what it sounds like. And ok on front axle. I will change that oil out next go around. I appreciate your helping with it. I was messing with the brake and none that linkage looks loose or any issues with it. The sound is like when you miss a gear on a standard. Loud kind a grind when pressing the forward or backward pedal. Almost a touch worse going backwards. Granted I haven’t hammered down just a foot one way or the other as I don’t want to make it worse.

 

[TXBeeMan]

Yes sorry dif lock. My terminology is off. Bout right for me. I know enough to be dangerous.