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  1. #1

    Join Date
    Dec 2004
    Posts
    12
    Tractor
    JD955

    Default changed the hydraulic filter but it is leaking

    I changed the hydraulic oil filter. The manual said to fill the filter 1/3 of the way full, I did this and noticed the dipstick was reading over full by a bit. I used the tractor a couple times and it is leaking oil around the housing where you connect the oil filter. I tightened the filter twice but it is still leaking after I use the tractor. I don't know if I should keep tightening the oil filter or not I know it is already tighter than the manual suggests. Any suggestions? It is a 955 and I corrected the overfull problem already by draining a bit.

  2. #2

    Default Re: changed the hydraulic filter but it is leaking

    I know you said you put oil in the filter, but did you rub a coating of oil on the filter gasket before installing? This is an important step. You should tighten the filter down until you feel the resistance of hitting bottom, and then about 1/2-3/4 turn further. If you tighten it too much, you can disfigure the gasket and have leaks.
    Take the filter off and examine the gasket inside. You'll lose some oil, but not too much, maybe 1 quart at best. If the gasket looks okay, ensure that the fitting it screws onto is not the source of the leak. If all looks okay, reinstall the filter without going too tight, wipe all excess oil from around the filter and start up the tractor. Run it until it is good an warmed up and then check again for leaks.
    If it seems to be leaking again. Turn it no more than 1/2 turn again, clean, repeat steps. If it continues to leak I would suspect that the filter is not truly seating, from deformity or other MFG problem. Replace it with another filter.. John

  3. #3
    Veteran Member NY_Yankees_Fan's Avatar
    Join Date
    Mar 2002
    Posts
    2,100
    Location
    Warren County, NJ (60 miles from NYC)
    Tractor
    Kubota BX 2200

    Default Re: changed the hydraulic filter but it is leaking

    John.

    Are you sure the old gasket is off? If the old gasket is still on plus you added the new gaket, it will leak. Check the old fitler if you have it and see if the gasket is still on the filter.

  4. #4
    Super Star Member RoyJackson's Avatar
    Join Date
    Nov 2001
    Posts
    18,838
    Location
    Bethel, Vermont
    Tractor
    John Deere 4400 MFWD, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements

    Default Re: changed the hydraulic filter but it is leaking

    I suggest you get another filter. You can try removing the one installed and lubricating the gasket, but if if's been deformed (by over-tightening) or just defective, it would be prudent to have another one one hand.

  5. #5
    Platinum Member
    Join Date
    Mar 2002
    Posts
    572
    Location
    Jackson County, Michigan
    Tractor
    Bolens HT-20

    Default Re: changed the hydraulic filter but it is leaking

    Ha! That happened on my Wfe's T-bird many moons ago! Did the job myself and was surprised when the oil light came on! I **KNOW** I put oil in there. Saw it pumping past the filter base. Nursed it back home and found the old gasket stuck to the block!!

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