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Discussion Starter · #1 ·
I am looking for help.
I have a 1991 Explorer sport 4x4. When I had the front end rebuilt, the shop that did the work damaged my factory auto lock hubs, so I got a set of warn hubs installed. I normally do my own repairs, but I needed the entire front end done, and it was the dead of winter.
Problem I am having is the passenger side castle nut slowly backs off.
I am having a mental block as why this is happening, and the shop basically stiffed me, said not our problem.
I have to occasionally take it the cover off, tighten the nut, and bolt the tire back on.
I don't see anywhere on the hub where a cotter pin would go like on a normal 2wd to lock it from moving.
Last time I inspected the cover, I noticed the inside was chewed up a little.
I have a basic chiltons book which is about worthless when it comes to this.
Just trying understand what was not done correctly, maybe something not set up correctly.
 

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Crank that nut down as tight as you can get it, only the outer nut that is.
Is the little lock pin on the back nut still there? I`ve seen this many times, usually it just is not tight enough.
 

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Try using a Ford washer in between the 2 nuts. Ford washers have round holes, Those oblong holes leave too much room for movement.
 

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I am sure you have this problem worked out by now, but you mentiom a "castle" nut much like the ones I removed when I took my auto hubs off and replaced them with a factory set of manuals I scored at a junkyard last year. Had a hard time coming up with the right combination of replacements finally used the ones from my 1976 F150 front Dana 44 differential parts I had laying around. My guess is you have the single hex or six sided nut the auto hubs came with.
 

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Ford dealers sell a retro kit with 2 nuts and a washer. The nuts are not like on an f-series They are both different sizes. The smaller one goes on the outside to give the hub some clearance.
 
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