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1811 Charge pump shaft repair

IH Cub Cadet Tractor Forum

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Quin Mehling

New member
Joined
Jul 15, 2020
Messages
4
Location
Indiana
I acquired an 1811 last year and I have had an issue with vibration in the driveshaft for the hydraulic pump. I replaced the joints, did ok for a while. Then the vibration got real bad. I pulled the transaxle and dug into it. Transaxle got pulled for shearing frame to trans bolts, getting an upgrade.

Once I got everything apart found the brass bushing to be bad, coupling arm is toast and the pin holes on the charge pump shaft are egged out. That shaft is really expensive, do I replace or weld up the holes and re-drill?
 
I would replace it with a good used shaft. If it is welded up and redrilled, it will probably wear faster than it originally did since the heat treatment will be damaged.

Replace both input shaft needle bearings while you are in there, too.
 
He is talking about the hydro unit input shaft. Any CC hydro model without a splined input shaft should fit.
 
It could probably be welded up and redrilled if one is careful not to ruin the case hardening where the seals and bearing ride, but doing that in the tractor would ruin the bearing. It would have to be done with the shaft removed from the hydro unit.

When welding on something, you never, ever want to have the ground path be through a bearing.
 

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