Kubota KX-91s has oil leak inside of track near the front under roller

[csharpe5097]

I have a 2006 kx-91s mini excavator. I noticed a black fluid inside of the front right track. I assume its oil but what is leaking and how do I fix it. Please

 

[art]

Need to know more to help you. You only have the drive motor unless it is leaking from above.

 

[csharpe5097]

What else do u need to know. It doesnt appear that any oil is coming from above. Just within the tracks

 

[The Fred]

Front idler or one of the small rollers?

My Volvo EC-35 eats track rollers, the seal (a plain buna o-ring) goes bad and the oil leaks out ruining the bronze bushing. They can be pressed apart and repaired if you have a metal lathe and new o-rings. 20 ton press needed also.

Good luck, Fred

Kubota Track Excavator Bottom Roller KX91 3 KX71 3 Part RD511 21702 | eBay

 

[RDrancher]

You need to determine if it's gear oil (real stinky) or hydraulic oil. If it's gear oil you have a leak in the final drive. They don't hold much oil, so make sure it doesn't run dry. Info should be in your owner's manual on checking it and fluid quantity. If it's hydraulic oil, it's from the motor, or one of the fittings or hoses is leaking.

 

[The Fred]

Gear oil used in the rollers also and it does turn black, brackish.

Fred

 

[Corey MARSHALL MACHINERY]

Hi Csharpe if you contact our service department we can help you.