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Show Parts for Model:

460 hydraulic pump drive

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Hugh McKinney

07-09-2014 11:57:20

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Okay, 460/560 experts: I have no detectable hydraulic pressure on my "new" 460, even though it appeared to be full of fluid and I cleaned the filter and screen. So, I take the plate off the other side where the pump is. Pump looks outwardly okay, driven gear on pump looks good, drive gear on tractor looks good too, EXCEPT it doesn't seem to fit too tightly on its shaft-it has an eighth of an inch or more of wobble, fore and aft. My question is, is it normal for the drive gear not to be tightly fastened onto its shaft, or is this slack between the shaft splines and the drive gear a sign of serious trouble and the need for a teardown? I know that the question of hydraulic pressure is a separate issue, but I just don't want to tear anything up. Thanks, Hugh

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07-09-2014 19:59:43

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 Re: 460 hydraulic pump drive in reply to Hugh McKinney, 07-09-2014 11:57:20  
Gears do not like wobble in any direction that sure needs to be fixed, look for wear on the shaft as well as the gear. If the pump turns with the eging rotation and no noises in the clutch area were evident it might be a priming/intake issue. if the pump does not turn, it is likely the drive splines in the tubular shaft at the clutch plate. But do not saaume it will be OK with gears out of proper mesh.

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