Results 1 to 6 of 6
  1. #1
    Gold Member
    Join Date
    Jul 2010
    Posts
    286
    Tractor
    Gravely 16-G

    Default 'Double' vs. 'Single' Clutch

    Do all live PTO tractors use a 'double' clutch? I have a B9200 which I believe has a live PTO. I have not confirmed as it only has a FEL on it now. Does this tractor have a 'double' clutch? I assume that a 'double' clutch is more expensive to replace.

  2. #2
    Elite Member Chilly807's Avatar
    Join Date
    Sep 2009
    Posts
    3,198
    Location
    Nova Scotia
    Tractor
    Kubota L3400DT

    Default Re: 'Double' vs. 'Single' Clutch

    Quote Originally Posted by MMH View Post
    Do all live PTO tractors use a 'double' clutch? I have a B9200 which I believe has a live PTO. I have not confirmed as it only has a FEL on it now. Does this tractor have a 'double' clutch? I assume that a 'double' clutch is more expensive to replace.
    A two-stage clutch allows the PTO to engage and turn the output shaft before the wheels move. The first half of the clutch pedal travel is dedicated to the PTO clutch, the last half operates the wheel drive clutch.

    You can check to see if the 9200 has a two-stage clutch by watching the engaged PTO stub shaft as you let the clutch pedal out. If it begins to turn well before the tractor itself moves, you have a two-stage clutch.

    Sean

  3. #3
    Veteran Member brain55's Avatar
    Join Date
    Jan 2008
    Posts
    1,523
    Location
    Brentwood, CA

    Default Re: 'Double' vs. 'Single' Clutch

    Quote Originally Posted by MMH View Post
    Does this tractor have a 'double' clutch? I assume that a 'double' clutch is more expensive to replace.
    No, if your tractor is a hydrostat it will have a single clutch. Double clutches are only significantly more expensive if you have the whole assy replaced rather than being rebuilt. And only slightly more expensive if both discs and pressure plates need to be replaced. There is almost never a reason to replace the housings.

    Brian

  4. #4
    Veteran Member brain55's Avatar
    Join Date
    Jan 2008
    Posts
    1,523
    Location
    Brentwood, CA

    Default Re: 'Double' vs. 'Single' Clutch

    I looked at some other posts and see that this is gear tractor. I'm trying to remember back 20 years. I want to say that the double clutch was an option, I knew for sure the single clutches came with hydrostats. Most kubota dual clutch tractors I have worked on had some kind of stop lever that you could flip down so you could push the clutch pedal down without pushing down too far and disengaging the PTO clutch. You can also tell by there being 2 distinct tension points in the clutch pedal travel and you overcome each of the belleville springs on the pressure plates. I think I have only ever had one B-series with a dual clutch apart, we sold primarily hydrostats.

    Brian

  5. #5
    Elite Member gwdixon's Avatar
    Join Date
    Jul 2009
    Posts
    2,504
    Location
    Northern CA

    Default Re: 'Double' vs. 'Single' Clutch

    Chilly807 is spot on with his description.

    I had a L3650 DT-7 for thirty years that had a dual stage clutch. In certain situations it was very useful.

    An example is when rototilling. You can let out the clutch halfway to start the rototiller tines turning and then let it out all the way to start the pass. Bush Hogging and flail mowing had a similar advantage.

    When using a chipper the clutch could be slipped to engage the chipper drive (while the tractor was is neutral).

    Using the chipper on my BX with HST you have to rev it up, slam it into PTO, and hope it doesn't stall. Some say the PTO engage lever can act like a clutch and feather it in but I haven't been able to master the technique.
    2009 Kubota M7040, R1s, LA1153 FEL, fork lift, 3 rear remotes, T&T
    2002 Kubota L48 TLB, 12", 18", 24" HD buckets
    2001 Kubota BX2200, Turf, LA211 FEL
    7.5' Howse 3PT disc, 88" Gearmore 4G4 box scraper, 4' box scraper, Gearmore GB85 blade, LandPride RCR2596 cutter, 6', 4' flail mowers, 6', 4' rototiller, 4' Bush Hog cutter, HD subsoiler, Bearcat 70554 chipper, Bush Hog PHD w/ 12", 6" augers, Ford 101 3-bottom plow, 8' land leveler, 6' rake, lots of misc.

  6. #6
    Super Star Member TripleR's Avatar
    Join Date
    Mar 2009
    Posts
    16,041
    Location
    Missouri
    Tractor
    Kubota, John Deere, Case, Massey Ferguson, Ford

    Default Re: 'Double' vs. 'Single' Clutch

    Quote Originally Posted by gwdixon View Post
    Chilly807 is spot on with his description.

    I had a L3650 DT-7 for thirty years that had a dual stage clutch. In certain situations it was very useful.

    An example is when rototilling. You can let out the clutch halfway to start the rototiller tines turning and then let it out all the way to start the pass. Bush Hogging and flail mowing had a similar advantage.

    When using a chipper the clutch could be slipped to engage the chipper drive (while the tractor was is neutral).

    Using the chipper on my BX with HST you have to rev it up, slam it into PTO, and hope it doesn't stall. Some say the PTO engage lever can act like a clutch and feather it in but I haven't been able to master the technique.
    I also found it harder to do on my BX2200, but pretty easy on my BX2660; don't know what the difference is, but it is significantly easier and smoother engagement.
    Thread on helpful tractor abbreviations: http://www.tractorbynet.com/forums/o...-acronyms.html

Similar Threads

  1. Clutch Life Expecancy in Hours
    By mrlullabye in forum Owning/Operating
    Replies: 28
    Last Post: 06-22-2013, 05:25 PM
  2. Shear Bolt vs. Slip Clutch for Rotary Cutters
    By ColoradoDan in forum Attachments
    Replies: 19
    Last Post: 11-01-2010, 09:04 PM
  3. single to double conversion
    By Arkwright in forum Hydraulics
    Replies: 19
    Last Post: 11-11-2009, 05:02 PM
  4. Bolens G174 / Iseki TX1500F Clutch Jammed
    By TedReese in forum Bolens
    Replies: 4
    Last Post: 10-06-2008, 03:44 PM
  5. Double clutch 2710???
    By gotrocks in forum Kubota Owning/Operating
    Replies: 3
    Last Post: 08-12-2001, 03:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2013 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.