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  1. #1
    Bronze Member
    Join Date
    Nov 2006
    Posts
    55
    Location
    Skamania County
    Tractor
    Deere 3320

    Default Rockshaft control lever's gone soft

    My rockshaft control lever won't hold position on my deere 3320. It was pretty stiff until yesterday, but now when I lift the rear blade the lever slides back down. The blade lifts and drops like it normally does, except that it drops back down as the lever slips. It's been really cold here lately (single digits F) and all the other hydraulics work just fine. I thought at first that it was cold related, but not I wonder. Anybody have any explanations?

  2. #2
    Elite Member
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    MtnViewRanch's Avatar
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    Mar 2005
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    6,985
    Location
    4000\' mountains of Southern California
    Tractor
    Mahindra 7520, Mahindra 3215HST, Case 580 extendahoe, Case 310 dozer, Parsons trencher, Cat D6,

    Default Re: Rockshaft control lever's gone soft

    Check to see if your control lever has gotten loose. Should be just a nut to snug up where the lever pivots. Just a thought.
    Brian
    Top and Tilt Kits by Fit Rite Hydraulics

  3. #3
    Super Star Member kennyd's Avatar
    Join Date
    Jul 2003
    Posts
    11,470
    Location
    Westminster, MD
    Tractor
    John Deere 4110

    Default Re: Rockshaft control lever's gone soft

    Here is a picture of the linkage. Check the tightness of the locknut (#9) that put tension on the spring pack (#11)
    Attached Thumbnails Attached Thumbnails Rockshaft control lever's gone soft-3320-rockshaft.gif  
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  4. #4
    Bronze Member
    Join Date
    Nov 2006
    Posts
    55
    Location
    Skamania County
    Tractor
    Deere 3320

    Default Re: Rockshaft control lever's gone soft

    Thanks! That sounds like a good call - I need to dig a little to get in there but I'll give that try.

  5. #5
    Bronze Member
    Join Date
    Nov 2006
    Posts
    55
    Location
    Skamania County
    Tractor
    Deere 3320

    Default Re: Rockshaft control lever's gone soft

    For the record, I found a friction washer (part #1 in the diagram (M136623 ))had broken and fallen off the shaft, which probably explains the sudden misbehavior. I Didn't tighten down on the spring pack yet - the washer's on order and I'll replace the washer and adjust the whole assembly when it comes in.

    Thanks for the replies ---

  6. #6
    Elite Member
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    MtnViewRanch's Avatar
    Join Date
    Mar 2005
    Posts
    6,985
    Location
    4000\' mountains of Southern California
    Tractor
    Mahindra 7520, Mahindra 3215HST, Case 580 extendahoe, Case 310 dozer, Parsons trencher, Cat D6,

    Default Re: Rockshaft control lever's gone soft

    Good to hear that it will be an easy fix.
    Brian
    Top and Tilt Kits by Fit Rite Hydraulics

  7. #7
    Silver Member
    Join Date
    Jun 2007
    Posts
    228
    Location
    Middle of west TN
    Tractor
    JD: LX172, X740, 3520

    Default Re: Rockshaft control lever's gone soft

    My 3520 just developed this same loose lever problem. Haven't had time to really explore, but it looks like I will have to remove something to access the mechanism. Haven't been under the tractor yet, but this area looks to be too high up to reach from below. How did you guys get to it?
    Thanks!
    John

  8. #8
    Elite Member
    Advertiser
    MtnViewRanch's Avatar
    Join Date
    Mar 2005
    Posts
    6,985
    Location
    4000\' mountains of Southern California
    Tractor
    Mahindra 7520, Mahindra 3215HST, Case 580 extendahoe, Case 310 dozer, Parsons trencher, Cat D6,

    Default Re: Rockshaft control lever's gone soft

    Quote Originally Posted by John_in_TN View Post
    My 3520 just developed this same loose lever problem. Haven't had time to really explore, but it looks like I will have to remove something to access the mechanism. Haven't been under the tractor yet, but this area looks to be too high up to reach from below. How did you guys get to it?
    Thanks!
    John
    I was able to get a wrench to the nut from up on top, but I think that I could have reached it from underneath also.
    Brian
    Top and Tilt Kits by Fit Rite Hydraulics

  9. #9
    Silver Member
    Join Date
    Jun 2007
    Posts
    228
    Location
    Middle of west TN
    Tractor
    JD: LX172, X740, 3520

    Default Re: Rockshaft control lever's gone soft

    Thanks for the reply. I will have to take a closer look at it when I get a chance.

  10. #10
    New Member
    Join Date
    Jan 2013
    Posts
    4
    Location
    Palmdale, CA
    Tractor
    John Deere 3320

    Default Re: Rockshaft control lever's gone soft

    My rock shaft lever is way too stiff. Were you able to determine where to adjust the friction?

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