Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

3rd gear popout (420, 465) A very good explanation as to why this happens.

Discussion in 'The Garage' started by BigOrange90Jimmy, Nov 6, 2003.

  1. BigOrange90Jimmy

    BigOrange90Jimmy 1/2 ton status Premium Member

    Joined:
    May 24, 2002
    Posts:
    2,923
    Likes Received:
    0
    Location:
    Wilmington, NC
    This was taken from a post on North Carolina 4x4 forum.

    "SM 420s like to wear out the shift rods and fork assemblies long before the gears and bearings are gone, especially if Billy Bob driver liked to hang onto the shift lever like a grab handle as he went 'round corners. The detent balls wear the lands on the rods leaving a depression rather than a true detent and the shift forks wear to the point of sloppiness, failing to fully engage the gears. Try that first, it's a relatively cheap fix if it works and you're ahead on the parts if there's more to do. Be aware that if the detents are really worn, there'll be more stuff that needs attention."

    I just figured you guys wouldn't mind me posting up this good piece of info.
     
  2. 4x4Freak

    4x4Freak 1/2 ton status

    Joined:
    Apr 21, 2002
    Posts:
    792
    Likes Received:
    0
    Location:
    Lubbock, TX
    A worn out input bearing will also cause that. We had problems with the 420 in my dad's jeep. We finally replaced that bearing after pulling the tranny about 5 times. So far it's still working like it should.
     
  3. m j

    m j 1/2 ton status

    Joined:
    Dec 28, 2001
    Posts:
    4,606
    Likes Received:
    0
  4. BigOrange90Jimmy

    BigOrange90Jimmy 1/2 ton status Premium Member

    Joined:
    May 24, 2002
    Posts:
    2,923
    Likes Received:
    0
    Location:
    Wilmington, NC
    welcome back! /forums/images/graemlins/thumb.gif
     
  5. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    He's not coming back he just always lurks in the backround.
     

Share This Page