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  1. #1
    New Member
    Join Date
    Jul 2011
    Posts
    18
    Tractor
    John Deere 2520

    Default John Deere 2520 wet brakes squeal

    Does anyone have any idea why the wet brakes on my 2520 make a loud high pitch squeal? Both sides will do it and it seems to go away if I ride the brakes lightly for 10-20ft. It will come right back after a few minutes though. I changed the transmission fluid/filter at 50 hrs with hygard low vis fluid and the tractor now has 90 hours and is a year and half old. I don't really know if this is something new or if it has always done this since I don't use the individual brakes that much. Does anyone know if this is normal or what could be causing this? I found some other posts where this happened to people by using aftermarket or the wrong fluid, but I used JD fluid from the dealer.

  2. #2
    Gold Member pedalstomper78's Avatar
    Join Date
    Aug 2010
    Posts
    450
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: John Deere 2520 wet brakes squeal

    How many hours are on the tractor? Is there some freeplay in the adjustment? Gear or HST?

  3. #3
    New Member
    Join Date
    Jul 2011
    Posts
    18
    Tractor
    John Deere 2520

    Default Re: John Deere 2520 wet brakes squeal

    Quote Originally Posted by pedalstomper78 View Post
    How many hours are on the tractor? Is there some freeplay in the adjustment? Gear or HST?
    90 hrs on tractor and there is freeplay in the adjustment. The transmission is hst.

  4. #4
    Super Member RickB's Avatar
    Join Date
    Sep 2000
    Posts
    7,590
    Location
    Eastern NY
    Tractor
    Case 885, Ford 4000

    Default Re: John Deere 2520 wet brakes squeal

    Contaminated oil is the likely cause if the symptoms are new. Condensation is most likely.
    We have too much gun control.
    What we need is more idiot control.

  5. #5
    Super Member greg_g's Avatar
    Join Date
    Dec 2003
    Posts
    6,028
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: John Deere 2520 wet brakes squeal

    x2 on wet hydro fluid. Unfortunately the noise won't go away with a flush and fresh fluid. The rust on the discs will still be there.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  6. #6
    Veteran Member kuboman's Avatar
    Join Date
    Dec 2009
    Posts
    2,105
    Location
    Canada
    Tractor
    B3200, L5740,

    Default Re: John Deere 2520 wet brakes squeal

    They may have some rust or maybe glazed. I would try some hard braking. Good chance the noise will go away.
    L5740 LA854 loader
    L3130 LA723 loader sold
    B3200 LA504 loader
    B1550 sold
    B2620 sold
    B4200 sold
    F2680E
    GF1800
    Kubota RTV900
    JD 850D Gator sold
    JD F935 x 2 sold
    Case 590SM-2
    JD 310D TLB sold
    Ford 555D sold
    Gehl 602 excavator sol

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