L3000LT throttle sticks

[nealfris]

Hi all, need help with my sticking throttle on my Kubota. My standard gear tractor has dash and foot throttle. when shutting off the tractor the dash throttle arm moves freely but the foot pedal remains at rpm. I've lubed and checked linkage all the way to the engine.
I know engines and mechanical, but I don't know diesels. The previous owner checked in with dealer service dept. They told him it was inside the engine and expensive to fix.
I have loosened and removed the arm between linkage and vertical shaft going into engine. The shaft is definitely hanging up. Any advice on how to service and free up this shaft??? I've been dowsing it with PB blaster hoping it will run down inside. No luck!

 

[nealfris]

Wow, no Kubota guru's out there???

 

[kuboman]

Hi all, need help with my sticking throttle on my Kubota. My standard gear tractor has dash and foot throttle. when shutting off the tractor the dash throttle arm moves freely but the foot pedal remains at rpm. I've lubed and checked linkage all the way to the engine.
I know engines and mechanical, but I don't know diesels. The previous owner checked in with dealer service dept. They told him it was inside the engine and expensive to fix.
I have loosened and removed the arm between linkage and vertical shaft going into engine. The shaft is definitely hanging up. Any advice on how to service and free up this shaft??? I've been dowsing it with PB blaster hoping it will run down inside. No luck!

Have you confirmed that it is sticking right at the pump? If so then it is an internal pump problem. Past that I can't help. Expensive probably