Results 1 to 8 of 8
  1. #1
    Gold Member
    Join Date
    Dec 2005
    Posts
    416
    Location
    Iowa
    Tractor
    Kubota GL3830/GL5030

    Default PTO shaft removal

    I picked up a John Deere 686 single auger two stage snow blower. When I got it home, I noted that the PTO shaft was cut way too short for my needs. The tractor side of the shaft slid out easily. It's a standard 1 3/8" spline connection. The implement side, however, is being a BEAR.

    It's a 1 1/2" round, 3/8" keyway design at 12 o'clock WITH a 1/4" or so thru hole at 9 and 3 o'clock. A 3/16" set screw was pressing against the key. Two additional bizarre-sized set screws (smaller than 5mm and 3/16, yet larger than 4mm and 5/32") were on either side of the yoke covering the thru hole. In the through hole was a roll pin.

    I removed the 3/16" set screw against the key, had to drill out the two other set screws for lack of an allen wrench that would fit it, and tapped out the roll pin, BUT the yoke won't slide off of the gearbox shaft.

    With the blower attached at the 3 point, I've tried hammering, tugging, jiggling, impact hammering, using penetrating fluid, and even putting a 2" ratchet strap through the cross in the ujoint and pulling against the draw bar. Nothing.

    Any other ideas to get this stubborn thing off?

  2. #2
    Elite Member zzvyb6's Avatar
    Join Date
    Dec 2006
    Posts
    2,562
    Location
    michigan
    Tractor
    jd 1070

    Default Re: PTO shaft removal

    JD parts shows a cap screw going thru the shaft and a set screw holding the key. That's it, unless the roll pin is actually a sheared off cap screw. Bigger hammer or get a die grinder and cut it off if its snowing. Git er one with a cold chisel.
    There is no "I" in team, but there is a "Me" if you want to jumble it up a bit...

  3. #3
    Elite Member
    Join Date
    Sep 2008
    Posts
    3,207
    Location
    NE USA
    Tractor
    JD LA115, WH 244, WH 525 hydro-pops,Original Troy Built Horse 8 HP

    Default Re: PTO shaft removal

    Just for sanities sake, does the blowers
    yoke possibly have a hidden castle nut
    and cotter pin from the gearbox shaft
    that may not be readily visible beause
    of the spider/U joint obstructing the view?


    If not:


    If you have a salamander use it to heat the yoke
    WITH the blower removed from the tractor,
    other wise you will need a rosebud torch head.

    I would leave the salamander to heat it for at least
    an hour and then it should come off easily with a
    2 pound hammer when you are wearing heavy gloves
    or welding gloves if you have them to protect your hands.

    If you can find Fluid Film at the local
    John Deere dealer or another reseller
    which can be found on the
    Fluid Film? | Corrosion Preventative, Lubricant and Rust Inhibitor home page you
    can use that to keep everything lubed
    up on the splines during use to
    prevent rust or the off season too,
    as it penetrates and keeps out rust.

  4. #4
    Elite Member zzvyb6's Avatar
    Join Date
    Dec 2006
    Posts
    2,562
    Location
    michigan
    Tractor
    jd 1070

    Default Re: PTO shaft removal

    Here is the view. No Castle nut. If the thru-hole is completely clear and the key set-screw is backed out, then soaking it in penetrating oil overnite ought to start moving it. If not, split it. Beating or heating it may hurt the bearings or seals in the gearbox (or worse).

    I suppose you could also remove the gearcase seal, pull the snap ring, yank out the input shaft and then take it to a press.
    Attached Thumbnails Attached Thumbnails -686-driveline-jpg  
    There is no "I" in team, but there is a "Me" if you want to jumble it up a bit...

  5. #5
    Elite Member JasG's Avatar
    Join Date
    Jan 2004
    Posts
    3,201
    Location
    CNY
    Tractor
    Kubota L3240

    Default Re: PTO shaft removal

    I have had to cut them off before due to rusting in place. Cut 2 grooves across from one another, but don't go through into the shaft. Then use a chisel in one groove to finish (the chisel should cause it to crack) then it should come off.

  6. #6
    Gold Member
    Join Date
    Dec 2005
    Posts
    416
    Location
    Iowa
    Tractor
    Kubota GL3830/GL5030

    Default Re: PTO shaft removal

    I finally got it off - thanks for all the ideas! Liquid Wrench penetrating oil two nights in a row didn't get it done, but switching to PB Blaster on night three did the trick.

    Now the fun begins to find a replacement shaft.

    No one seems to carry a shaft with especially the implement end requirements of 1 1/2" round with the 3/8" key, much less with the 1/4" holes drilled at 9 and 3 o'clock for the through bolt. The 6 spline 1 3/8" tractor side seems like less of an issue, but even finding a replacement shaft that is already set up for a shear bolt (part #17 in the above pic) is proving problematic (both of my shafts have been cut to only 12" long - that's what started this mess!). It may be that I cut the existing tubing perfectly square and try my hand at welding on a replacement extension - not looking forward to that.

    I just shot an email to a provider indicating that if they could leave the implement yoke off that I could re-use my end so long as they used a series 35 mating yoke.

    I cannot be the first guy to need a replacement shaft, but it sure seems that way.

  7. #7
    Silver Member
    Join Date
    Mar 2008
    Posts
    208

    Default Re: PTO shaft removal

    Can you find a shaft with the same size u joints? If you can use the old yoke on the new shaft.

  8. #8
    Elite Member Chilly807's Avatar
    Join Date
    Sep 2009
    Posts
    3,211
    Location
    Nova Scotia
    Tractor
    Kubota L3400DT

    Default Re: PTO shaft removal

    Quote Originally Posted by 5030tinkerer View Post
    I finally got it off - thanks for all the ideas! Liquid Wrench penetrating oil two nights in a row didn't get it done, but switching to PB Blaster on night three did the trick.

    Now the fun begins to find a replacement shaft.

    No one seems to carry a shaft with especially the implement end requirements of 1 1/2" round with the 3/8" key, much less with the 1/4" holes drilled at 9 and 3 o'clock for the through bolt. The 6 spline 1 3/8" tractor side seems like less of an issue, but even finding a replacement shaft that is already set up for a shear bolt (part #17 in the above pic) is proving problematic (both of my shafts have been cut to only 12" long - that's what started this mess!). It may be that I cut the existing tubing perfectly square and try my hand at welding on a replacement extension - not looking forward to that.

    I just shot an email to a provider indicating that if they could leave the implement yoke off that I could re-use my end so long as they used a series 35 mating yoke.

    I cannot be the first guy to need a replacement shaft, but it sure seems that way.
    I had to replace a section of PTO shaft last summer, your best bet may be to remove the tubes from the universals and put a new longer piece in. If you go this way you may also have to replace the outer shield tube too. Still cheaper than buying a whole shaft.

    Sean

Similar Threads

  1. PTO Shaft run-out
    By Jay4200 in forum Attachments
    Replies: 6
    Last Post: 12-20-2010, 02:19 PM
  2. How do you install the PTO shield on the PTO shaft?
    By Stoner in forum Parts/Repairs
    Replies: 10
    Last Post: 05-20-2010, 03:49 PM
  3. Connect PTO shaft using pin or bolt?
    By Richard in forum Parts/Repairs
    Replies: 33
    Last Post: 11-23-2008, 09:27 AM
  4. Replacement RC PTO shaft
    By croasdale in forum Attachments
    Replies: 4
    Last Post: 05-23-2008, 07:09 AM
  5. PTO, way too often is undervalued in a purchase
    By Keith_B in forum Buying/Pricing/Comparisons
    Replies: 51
    Last Post: 02-21-2007, 04:16 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
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.