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Subject: how to hold lift pin when tighting to 150 lbs.

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clair bell    Posted 12-07-2018 at 18:06:04 [URL] [DELETE]        [Reply] [Email]  
  • how to hold lift pin when tighting to 150 lbs.
  • I need to know how to hold the lift pin when I tighten it to 150lbs. I would think that the pin would turn in the hole when I tighten it. then how to hold pin when I tighten the out side nut holding the bar. Any help would be appreciated.

    Tim Daley(MI)    Posted 12-08-2018 at 08:18:45 [URL] [DELETE]        [Reply] [No Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • If you are referring to the lift arm to axle trumpet connections, they are fastened via tapered pins and castle nuts that have to be accessed from inside the center housing. The pin, p/n 8N-563, is tapered, fits into the center housing snugly, and gets secured inside with a 5/8-18 castle nut and cotter pin. The bad news is that many times because of wear and tear on the lift/arms over time, the tapered holes on the housing become wallowed out. If they become real bad, they will no longer pull the tapered pin in firmly. You can access one side via the LH side inspection cover on the center housing but the other side, the RH side, requires the LH axle trumpet and the differential drive to be removed entirely. You cannot reach the pins simply by removing the top cover either. It is not a tough job/project, but very time consuming as removal of several parts is required. the LINK below from our archives is a reply from Bruce(VA) on pin repair. Here is a scan of the 8N lift arms and related parts -

    8N HYDRAULIC LIFT LINKS & RELATED PARTS:

    Also, from the NTC Archives, long time member SOUNDGUY posted this on how to get the lift pin, 8N-563, tight without removing axle trumpet, but, it only works on one side:

    “I was in a time pinch on that one…have to set the socket wrench extension and socket and ratchet into the sump one at a time, reach in with nippers and cut the cotter pin and remove…use a pipe wrench and pipe on the trumpet pin in a way that you can use yer foot to stand on the pipe…between the socket wrench, hold in and you standing on pipe…you get her snugged up, and then probe around with the cotter pin to see if you have it lined up correctly… if not, tighten 1/16" more and try again… and try again…once you get it…stab it in and bend it over.”

    LH TRUMPET REMOVED, DIFFERENTIAL DRIVE REMOVED, 8N-563 PIN ASSEMBLY SHOWN AT 7 O’CLOCK POSITION ON RH AXLE TRUMPET:


    PHOTO COURTESY OF: Kevin(FL)

    Hope this helps you. FWIW, you can always go to our ARCHIVES forum and plug in a keyword or topic and get old posts on the subject. Most, if not all, topics have been discussed here at one time or another and there is surely some information you may find useful from them.

    Tim Daley(MI)

    clair bell    Posted 12-08-2018 at 09:52:53 [URL] [DELETE]        [Reply] [Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • thank you

    Randy(PA)    Posted 12-07-2018 at 23:31:50 [URL] [DELETE]        [Reply] [No Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • What is the part number of this "lift pin"?

    Dean    Posted 12-07-2018 at 20:02:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • The lift pin fits into a tapered hole and is held in place with a castle nut on the inside. If it turns you have additional problems.

    If mine, I would use the OEM self locking nut and not try to tighten to 150 Ft/Lbs.

    Dean

    R Geiger    Posted 12-07-2018 at 22:48:47 [URL] [DELETE]        [Reply] [No Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • I thought the castle nut and cotter pin was the OEM nut!

    Dean    Posted 12-08-2018 at 08:30:05 [URL] [DELETE]        [Reply] [No Email]  
  • Re: how to hold lift pin when tighting to 150 lbs.
  • Castle nut and cotter pin on inside.

    OEM interference nut on outside.

    Who knows what on outside now.

    Dean

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