Hydraulic Failure

[PoTreeBoy]

The manual has the whole transaxle out and turn up making the cover horizontal. Anyone ever tried to remove the cover vertical still in the tractor? Just to maybe get a better look.

Is it feasible to remove the hydraulic pump so you can check whether the pump drive is turning?

 

[TheOldHokie]

So… after a long winded discussion with the senior tech at Siler Implement. He is convinced the input pump shaft is sheared at or very near the cylinder block assembly. The clicking noise is most likely the spines riding over each other at the break. The shaft should be somewhat difficult to turn (not by hand). The shaft when turned should not make any noise louder than the bearings moving and one could hear the cylinder block pistons move with ear on the cover. Biggest kick in the pants is the powertrain warranty expired in June 2026!

Are you talking about the pump input shaft? Thats very easy to inspect.

Dan

 

[Harold B]

The input shaft from the HST that the fan coupling attaches to and the engine driveshaft.

 

[Harold B]

This view is of the front cover removed he suspect the shaft is sheared near that piston pump. Looks like that drum with springs and pistons would likely be awful with it vertical in the the tractor to reassemble?

 

[Harold B]

Here is the section where he thinks it’s sheared either above or below

 

[whitetiger]

I have a video can’t seem to post it, I’m kinda a big guy, but none the less it turns rather easily in both directions and makes a low pitched click, similar to spring loaded gears riding on their edges barely engaging, moved hydro levers around and nothing changes.

Even for someone who could hunt bears with a switch would not be able to turn the HST input shaft by hand on a working unit. You have a part failure within the HST assembly.
It should require a pair of pliers to turn the input shaft.

The only clutch material in a BX is from the brake or PTO. It is common to see the dark dust in the oil but not be able to strain it out.