Re: MCV ?

Posted by Weldon on July 29, 2005 at 08:27:52 from (71.28.70.114):

In Reply to: Re: MCV ? posted by farmer fireman on July 28, 2005 at 19:21:16:

When was hydraulic system filter changed?

If tractor is full of hydraulic oil and the lift and PTO work then problem most likely is with MCV and pump. Could be that the key in MCV pump drive shaft is sheared / wallowed out or the pump drive shaft seal is worn and not sealing.
You really need to test the MCV pump and valve as directed by a shop manual.

Will the hydraulic lift (two point or three-point)and auxilliary valves operate (lift a load)?
Does the PTO work properly (turn under load)?

If lift and PTO does not work ,then the PTO drive shaft splines are worn off also the splines in the clutch pressure plate which mate with the PTO drive shaft. The MCV pump is driven off of the PTO driven gear. If the splines are worn off of the PTO drive and pressure plate, it is my understanding that a tractor would have no steering ,brakes, TA or hydraulic lift and PTO.

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