Results 1 to 9 of 9
  1. #1
    Member calh22554's Avatar
    Join Date
    Jan 2013
    Posts
    29
    Location
    mn
    Tractor
    ford 8n

    Default 8n kingpin Bushing Question

    Hi All,

    i'm new on the site - first post. Been reading a few threads and am amazed at the knowledge out here. So I have a late 1950 8n (my first tractor) and I'm in the throws of rebuilding it. I discovered the front axle bearings were shot, as well as the spindle bushings and thrust bearings (both sides). I assume the kingpin bushing is in the same condition, but I can't find anywhere how to test it. I have the FO-4 Manual and it describes how to change it, but doesn't say how to test it. Anybody know? With the front end off the ground, I can move the axle up and down a bit - so is this play normal or is the Kingpin bushing worn?

  2. #2
    Super Member 94BULLITT's Avatar
    Join Date
    Feb 2011
    Posts
    7,596
    Location
    Frederick County, VA
    Tractor
    Kubota BX2360 & L4240 HSTC

    Default Re: 8n kingpin Bushing Question

    Welcome to the forum.

    Put your hands a t 12 o'clock and 6 o'clock and shake the wheel with tractor jacked up and properly supported.

  3. #3
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    48,804
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 8n kingpin Bushing Question

    that will test the hubs more than the front kingpin.

    can the front axle tip forward?

    can the entire front axle move up or down mor ethan 3/8" when the tractor is jacked?

  4. #4
    Super Member 94BULLITT's Avatar
    Join Date
    Feb 2011
    Posts
    7,596
    Location
    Frederick County, VA
    Tractor
    Kubota BX2360 & L4240 HSTC

    Default Re: 8n kingpin Bushing Question

    It will test them both you have to watch and see were the play is.

  5. #5
    Super Star Member murphy1244's Avatar
    Join Date
    Nov 2011
    Posts
    17,254
    Location
    Ohio
    Tractor
    Kioti DK-40, MF-135, Ventrac 4500Y

    Default Re: 8n kingpin Bushing Question

    Almost like testing ball joints?
    Murph ------------

  6. #6
    Member calh22554's Avatar
    Join Date
    Jan 2013
    Posts
    29
    Location
    mn
    Tractor
    ford 8n

    Default Re: 8n kingpin Bushing Question

    So that's what I did when I tested the hubs - they moved in and out and the spindles moved up and down - more than I thought they should. When I took the hub and the spindles out - yes, the bearings were disintegrated. The Axle moves up and down too - about a 1/2 inch to 3/8 of an inch. I can't seem to get it to tip forward or back, but it most certainly moves up and down and makes me think the kingpin bushing is worn out. However - just not sure if there should be some play in the axle or no up and down movement at all?

  7. #7
    Member calh22554's Avatar
    Join Date
    Jan 2013
    Posts
    29
    Location
    mn
    Tractor
    ford 8n

    Default Re: 8n kingpin Bushing Question

    Maybe movement is closer to 3/8 - not 1/2". Let's say between 1/4 and 3/8. Should there be any movement in there?

  8. #8
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    48,804
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 8n kingpin Bushing Question

    there must be a little clearance from the kingpin thru the bushing.. just not excessive.

    generally you can visually inspec the kingpin and bushing from looking down at the front bolster thru the fan and fromt he front with the grill removed.

    this isn't a micrometer measurement.. you can eyeball this one. the fact the axle is not leaning forward is good.

  9. #9
    Member calh22554's Avatar
    Join Date
    Jan 2013
    Posts
    29
    Location
    mn
    Tractor
    ford 8n

    Default Re: 8n kingpin Bushing Question

    Thanks guys! Appreciate it

Similar Threads

  1. 8N Kingpin Bushing
    By calh22554 in forum Parts/Repairs
    Replies: 3
    Last Post: 02-13-2013, 03:46 PM
  2. Draw Bar Kingpin MIA !???
    By BRB Hand in forum New Holland Owning/Operating
    Replies: 4
    Last Post: 02-10-2011, 10:31 AM
  3. changing 4300 MFWD hub and kingpin seals
    By dfkrug in forum John Deere Owning/Operating
    Replies: 0
    Last Post: 08-09-2009, 08:43 PM
  4. I-match bushing question
    By mx125 in forum John Deere Owning/Operating
    Replies: 43
    Last Post: 05-17-2008, 11:19 AM
  5. Frt kingpin for International 2424 "Industrial"
    By Pks in forum Construction Equipment
    Replies: 0
    Last Post: 08-21-2002, 06:49 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.