L245Dt FEL front hydraulic pump and shaft problem

[TheOldHokie]

I'm pretty hard-headed, so I'd try to make the existing system work. After all, a similar system works on my L35. As @North Idaho Wolfman says, you might want to use something other than the rubber. At ~3000 rpm I'd be concerned about the shaft whipping and the rubber being too soft to restrain it. The L35 uses thin fiberglas disks. Thin steel disks, think shim stock, is used on commercial couplings, several pieces clamped together.

First, check the alignment of the crankshaft and pump shaft. Has something maybe cocked the pump relative to the crank? Is the length such that it doesn't put too much tension or compression on the disks?

Consider a filter or strainer on the tank outlet/pump suction, especially since you've had a prior problem. Filters are available at TSC et al; they are usually used on the tank return, but I think one would work on the pump suction like Kubota does.

My preference is chain couplers for the shaft and spin on wire mesh strainers with a bypass head for suction side use.

Dan

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[Russell King]

I appreciate all the help from you guys. i’m still a novice at wrenching on equipment. If there is a different system that works better. I’m willing to try it. I don’t mind the shaft. I just think it is gonna break again. Let me know what you guys think. Thanks.

Since you say you are a “novice”, the simplest solution is to use the tractor hydraulics by getting the block adapter (that you can purchase). That way you are really just putting the block on and moving (or replacing) hoses.

If it was me I would try to stick with what you have IF you can find someone to make you a suitable replacement coupling disk. Hopefully you still have the original disk that failed. I suggest that you take that to a machine shop or your Kubota service center or a local hot rod shop and see if they would make disc coupling to mount in place of the original. It must be a flexible disc (rubber, thin metal plates, fiberglass…).

Or you can get a new shaft made with a coupling (see the suggested coupling above) between the new shaft and the pump.

But the last two are a little above novice level but I think you can do either.