Results 1 to 3 of 3

Thread: 1986 D21 4x4 locking hubs conversion to manual hubs possible?

  1. #1
    Join Date
    Nov 2012

    1986 D21 4x4 locking hubs conversion to manual hubs possible?

    Helping my friend with his truck and my realm of expertise is more in domestics. Can anybody tell me if it is possible to convert the automatic locking hubs on the D21's to manual hubs? If so, who makes them and what all is entailed i.e. do you simply disconnect the electric button on the dash, are there any modifications necessary to install the manual hubs etc. And if not, are used automatic hubs the only route? He already called the dealer and they said the hubs are no longer available. Thanks in advance for your input.

  2. #2
    Senior Moderator
    chevychase's Avatar
    Join Date
    Oct 2010
    truck forum .org
    Blog Entries
    This is only thing we have ...Simple really. You remove all the parts that are labeled auto locking free running hub and save the snapring. Install the body of the Warn hub and install the snapring into the outer grove on the axle shaft(you will see 2 grooves and the auto hub uses the other one) then install the cover of the hub making sure that it is aligned properly. Then your done. Should take less than 30 min per side to do with standard hand tools. Most wheels won't even have to be removed to do it, but you do have more room to work if they are off..... ll the stuff under the auto-lock area comes off. It was super easy, the bolts were not too tough to break using the wooden handle of a hammer as an impact driver on a long 6mm allen key. Once the snap ring is off, the washer and cupped washer come right off....the bearing washer with the set screws in it remains on the hub!! The parts practically slide off on their own, and the hex head cap screws look nice! Pull the entire auto hub and the snap ring off. The lock washer with the two screws stays. Put the inner part of the warn on and then put the snap ring on on the outside most grove of the shaft. Then put the second half of the warn on and you're done!
    This is all hope it helps ..why would he want to swap auto..get out in mud to lock the manuals oh well to each his on.
    Welcome to the site.

    Gitter done have fun. Running on empty...running blind...running behind.....

  3. #3

    Join Date
    Jul 2011
    Central Oklahoma
    I was taught for stubborn allen screws use a deep well socket and some extensions to get some leverage on them, I have tried this and it does help.
    1994 white ext cab chevy silverado 5.7 rolling 230k miles
    stock with air filter lid flipped,
    open flowing exhaust to a 40 series flowmaster dumped.
    God Bless America, Support our Troops!

Similar Threads

  1. 1986 C20 1 ton dually conversion Check Engine Light
    By kristian_dancer in forum Chevy Truck Forum
    Replies: 1
    Last Post: 04-05-2011, 01:04 PM
  2. Cant find manual locking hubs for my truck!!!!
    By shermdman in forum Dodge Truck Forum
    Replies: 6
    Last Post: 01-07-2010, 07:41 AM
  3. auto to manual conversion
    By wmiller in forum Ford Truck Forum
    Replies: 3
    Last Post: 05-02-2007, 07:37 AM
  4. Locking Front Hubs Question
    By 49162 in forum Ford Truck Forum
    Replies: 4
    Last Post: 12-26-2006, 05:24 AM
  5. Auto Locking Hubs
    By 74pilot in forum GMC Truck Forum
    Replies: 1
    Last Post: 11-20-2005, 11:57 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