M1009 front spindle bearing nuts

[scrambled]

I was attempting to tighten my front wheel bearings yesterday and ran into a spindle nut that I have never seen before. The nut is a large 6 pointed star. Has anyone ever seen one before?

When you remove the lockout, there is another snap ring and washer before the nut.

I have rebuilt tons of axles over the years and never seen a nut like it.

Its in an 84 M1009.


Thanks,
Travis

 

[jag7720]

 

[Keith_J]

Page 8-4 of the -20 available here. Note middle of the page. Not needed, may be discarded. Not on 1984 but may be present on 85-87 vehicles.

 

[Crash_AF]

The early CUCVs had a different spindle nut than the 4 pin ones that have been used in Dana 44 axles since the 60s... I would recommend trashing them and getting the 4 pin ones as they are a direct swap. NAPA sells them and all my local NAPAs have several sets in stock.

Later,
Joe

 

[Dodgeman1941]

Ours had that one, the center part of the nut is round on the outside, then there are 6 "roll pins" that are held on by and outerband. There is a snap ring that is holding in a little key, remove the snapring. You thread a 4-40 machine screw into the end of the key, pull that key out and you are golden. When putting everything back togather, that outer ring acts like a self torquing nut. Ours wouldn't go all the way to the torque spec'ed in the manual, but is very very close. I checked that wheel for any bearing slop a couple days after reassembly and everything was still tight. Do yourself a favor, while you have it that torn apart, pull your axle shaft and replace the u-joint.

 

[scrambled]

Here is a pic. I have a bunch of the normal nut sets laying around and was gonna change them out. I tried hitting the nut with a punch and hammer, but no go. might have to make a little tool to get these things off.

 

[scrambled]

Looks like the manual says 84 is different. if there is a key in between the nut and spindle, it would explain a few things. I gotta see if I have a #4-40 screw laying around.

 

[Buckmaw]

Yep, there is a key... I had that WTF look until I hit the TM's...

I just used a dowel, hammer to tighten it back.

 

[scrambled]

There is a key in there. The driver side one doesnt budge and has a piece of a screw broken off inside of it. YAY!

The passenger side had the nut on backwards, but the key came out with a pick.

One side has better nuts now. Gonna have to worry about the stuck key later. I remember why I gave up wrenching for a living...

 

[Crackerjax]

My wifes truck had something that looked like that... we replaced it with stage 8 lockers.... much easyer to deal with I think....

 

[jimm1009]

That is the 83 & 84 version of the nuts and locking mechanism.
I drove them with wtih a chisel and threw them away and went to the 85 & newer configuration.
It works much better during the lubrication cycle which is 10,000 miles per the TM and uses a more common and easier to find tool (socket).
The TM shows the difference in old and 2nd generation.
jimm1009