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  1. #1
    New Member
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    Sep 2012
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    22
    Location
    Ny
    Tractor
    Yanmar sc2400

    Default Sc2400 knock

    Any one with a sc2400 ever notice a knocking sound from the hydro when standing behind the tractor after it has warmed up?

  2. #2
    Gold Member gtrippleb's Avatar
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    Aug 2009
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    428
    Location
    Central NC
    Tractor
    NH T2320 TL

    Default Re: Sc2400 knock

    The only time I've noticed that the tractor sounded like it was knocking was when the bracket for the air cleaner broke and the engine was vibrating so hard the two pieces of the bracket hitting eachother made it sound like the engine was knocking.

    Does it make any noise when you go forward/reverse or move the loader/3pt?
    Woods PHD35, Very Old 60" BB, Harbor Freight QH, BX42s Chipper, County Line Carry-All, County Line (Tarter Gate) 48" Tiller, Homemade 60" Dethatcher

  3. #3
    New Member
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    Sep 2012
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    22
    Location
    Ny
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    Yanmar sc2400

    Default Re: Sc2400 knock

    No change in the noise when using loader ect. The knock is not heard when on the seat, only when standing behind the tractor

  4. #4
    Gold Member gtrippleb's Avatar
    Join Date
    Aug 2009
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    428
    Location
    Central NC
    Tractor
    NH T2320 TL

    Default Re: Sc2400 knock

    Are you sure it's coming from the hydraulics and not something rattling?
    Woods PHD35, Very Old 60" BB, Harbor Freight QH, BX42s Chipper, County Line Carry-All, County Line (Tarter Gate) 48" Tiller, Homemade 60" Dethatcher

  5. #5
    New Member
    Join Date
    Sep 2012
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    22
    Location
    Ny
    Tractor
    Yanmar sc2400

    Default Re: Sc2400 knock

    I have looked for something loose.
    no noise until it has run for a few minutes.

  6. #6
    Super Member
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    Apr 2000
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    6,233
    Location
    central New York
    Tractor
    all makes and models

    Default Re: Sc2400 knock

    I can think of a lot of noises I've heard hydro's make through the past years, but not a knocking! Get it to a dealer while it still moves!!!!

  7. #7
    Gold Member gtrippleb's Avatar
    Join Date
    Aug 2009
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    428
    Location
    Central NC
    Tractor
    NH T2320 TL

    Default Re: Sc2400 knock

    How many hours do you have on the tractor? Have you changed the hydraulic filter/fluid? Here's a pretty interesting article on Common Hydraulic Problems Symptoms of Common Hydraulic Problems and Their Root Causes

    It sounds like a dealer check up might be in order.
    Woods PHD35, Very Old 60" BB, Harbor Freight QH, BX42s Chipper, County Line Carry-All, County Line (Tarter Gate) 48" Tiller, Homemade 60" Dethatcher

  8. #8
    New Member
    Join Date
    Sep 2012
    Posts
    22
    Location
    Ny
    Tractor
    Yanmar sc2400

    Default Re: Sc2400 knock

    Dealer sent someone to check it out. I wasn't home to talk to him. The message I got was might be a coupler?

  9. #9
    Gold Member
    Join Date
    Apr 2010
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    304
    Location
    Pennsylvania
    Tractor
    Yanmar sc2400

    Default Re: Sc2400 knock

    Sure it's not the seat?
    My seat makes all kinds of knocking noise. Lift it and it goes way. It's almost always done it.

  10. #10
    Gold Member gtrippleb's Avatar
    Join Date
    Aug 2009
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    428
    Location
    Central NC
    Tractor
    NH T2320 TL

    Default Re: Sc2400 knock

    Quote Originally Posted by Slab View Post
    Dealer sent someone to check it out. I wasn't home to talk to him. The message I got was might be a coupler?
    I can't think of what coupler he might be talking about.

    Here's the parts manual if you don't already have it.
    http://www.gtrippleb.com/tractor/sc2.../769-03821.pdf
    Last edited by gtrippleb; 11-01-2012 at 02:12 AM.
    Woods PHD35, Very Old 60" BB, Harbor Freight QH, BX42s Chipper, County Line Carry-All, County Line (Tarter Gate) 48" Tiller, Homemade 60" Dethatcher

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