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Re: MF-165 multipower excessive noise in front of transmission a

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Frank in Mo.

06-25-2013 15:23:07

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Masseynut, thanks foer the assistance, there are a few more symptoms I would like to share as I am not in the position to split the tractor at this time.In the middle of hay season. The noise gets worse as the oil heats up and the PTO is running. Also, looking at the oil through the transmission fill hole while the engine is running the oil is like niagra falls. Is there a possibility that the relief valve in the multipower control block located in the clutch housing could be blowing. Another thing I forgot to tell you was the hydraulic pump filter was only half there as the screen had desenigrated. Only the bottom half of the screen was left.
If the relief valve was blowing what could cause that? Thanks

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06-26-2013 05:36:09

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 Re: MF-165 multipower excessive noise in front of transmission a in reply to Frank in Mo., 06-25-2013 15:23:07  

The Multi-power valve in the clutch housing either energizes the clutch pack, or dumps oil back into the transmission. The regulator valve will only "shuttle" slightly within the housing to regulate line pressure. I don't believe that either could stir the oil in the fashion that you mention.

More likely to be a split in the internal feed pipe to the input housing and M.power valve, BUT the multi-power would be rendered in-operative, I believe. Is the multi-power working correctly?
If you are sure that this noise is coming from the transmission, I'd still bet on a failed bearing on the PTO drive side. It's possible that if one or both of the pump dowels have broken, it could also give you a similar noise. This would be coming from further back under the seat area.
The relief valve is set back in the centre or diff housing, on the auxillary pump. Not much chance it could stir the oil in the transmission to that extent.
The filter you described is the linkage hydraulic filter. There is most likely a second filter for the auxillary pump, depending on the configuration and serial number of your tractor. Apologies, I posted a pic of the standard transmission instead of the multi-power box, Evan.

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