1970 John Deere 3020 Stroke Control Valve Filter Element
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Thread: 1970 John Deere 3020 Stroke Control Valve Filter Element

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    jlk
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    1970 John Deere 3020 Stroke Control Valve Filter Element

    Has anyone had to replace the filter element (part R27173) on a John Deere 3020? Where is it located? Easy to change? Can it be clogged? Been chasing down a hydraulic problem; changed fluid twice, cleaned sump screen, changed filters. Still have chatter in power steering. Thanks!

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    jgayman's Avatar
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    According to the parts illustration it is on the back of the hydraulic pump. Not sure if this helps.

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    2012 2720 -- 200CX Loader -- 54" Quick Attach Snow Blower -- Frontier LR5060 Rake -- Land Pride RB1660 Blade (Hydraulic Angle) -- Artillian 42" Forks -- Ken's Bolt on Grab Hooks -- Fit Rite Hydraulic top-link -- 2013 X500 for mowing duties

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    If filter(R27173) is clogged I would think tractor won't have a very good maintenance record. I don't ever remember seeing one of those filters clogged in my 21 yrs employment at JD dealership.

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    jlk
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    Quote Originally Posted by Tx Jim View Post
    If filter(R27173) is clogged I would think tractor won't have a very good maintenance record. I don't ever remember seeing one of those filters clogged in my 21 yrs employment at JD dealership.
    I just purchased the tractor. I have no record of maintenance. Judging by the number of times I've had to change the hydraulic fluid and clean the sump screen, anything is possible.

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    Quote Originally Posted by jlk View Post
    I just purchased the tractor. I have no record of maintenance. Judging by the number of times I've had to change the hydraulic fluid and clean the sump screen, anything is possible.
    What type of foreign material is clogging sump screen?

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    jlk
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    Quote Originally Posted by Tx Jim View Post
    What type of foreign material is clogging sump screen?
    When I bought the tractor and immediately did all the fluid/filter changes, it was obvious there was a lot of water in the hydraulic/transmission fluid. The sump screen is clogged with what I am concerned might be clutch lining, but that is what I have been told by a well meaning friend. It is an off white fiber-ism material that plugged the screen. I'm on my fourth flush. Last one was pretty minor. But know I am having the classic 3020 delay in power steering and experiencing PTO slippage under load. Just looking for other options. Thanks!

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    If your tractor has syncro-range trans the only clutch like material that could get in sump screen is brake material or possibly diff lock lining if so equipped. I don't remember ever seeing diff lock linings separate. On subject of slipping pto clutch is oil getting into clutch housing?
    Last edited by Tx Jim; 06-15-2018 at 05:47 AM.

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    jlk
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    Quote Originally Posted by Tx Jim View Post
    If your tractor has syncro-range trans the only clutch like material that could get in sump screen is brake material or possibly diff lock lining if so equipped. I don't remember ever seeing diff lock linings separate. On subject of slipping pto clutch is oil getting into clutch housing?
    I have no confess my ignorance--how would I assess that?

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    Quote Originally Posted by jlk View Post
    I have no confess my ignorance--how would I assess that?
    If you're referring to hyd sump screen here's a photo with location.
    Attached Thumbnails Attached Thumbnails mvphoto798.jpg  

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    jlk
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    Quote Originally Posted by Tx Jim View Post
    If you're referring to hyd sump screen here's a photo with location.
    Sorry, I wasn't clear. How would I assess if oil was getting into the clutch housing. I have had to clean the sump screen three times. It is finally clear.

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