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MF 50 hyd. pump filter


 
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steve19438
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Joined: 30 May 2011
Posts: 3880
Location: harleysville pa

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PostPosted: Sat Jun 16, 2018 12:59 pm    Post subject: MF 50 hyd. pump filter Reply to specific post Reply with quote

bear with me on this one. my TO-35's do not have a filter on their hyd. pumps. my MF-50 does have a filter. I put the same 90wt mineral oil in all my machines. if the 35's do not need a hyd. filter why then does the MF 50 ?
 
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John Deere D
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Joined: 14 Jun 2011
Posts: 2729


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PostPosted: Sat Jun 16, 2018 9:20 pm    Post subject: Re: MF 50 hyd. pump filter Reply to specific post Reply with quote

All rotating mechanical components that drive or come in contact with another rotating component shall in time produce metallic cuttings / fillings that are detrimental to the close running tolerances of the Hydraulic pump.
An Inlet screen, on the Hydraulic pump supply oil, helps to add longevity to the hyd. pump.
Three point Hydraulic pumps are expensive.....

Possibly, the TO-35s were supplied with an oil pump that was later upgraded with an inlet screen when the MF 50s hit the market???????

Bob...

 
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steve19438
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Location: harleysville pa

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PostPosted: Sun Jun 17, 2018 3:03 am    Post subject: Re: MF 50 hyd. pump filter Reply to specific post Reply with quote

later 35 pumps did have a screen. I understand the shavings part but many of these screen less pumps have been functioning for over 50 years. using non detergent oil as specified in the TO's allowed contaminants to fall to the bottom of the sump (supposedly) which I guess is why sometimes a couple of inches of "gunk" can be found in the bottom of the sump???
 
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