upgrading hubs, why change spindle nut?
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Junior User
Joined: Oct 2005
Posts: 62
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upgrading hubs, why change spindle nut?
1995 F250, 4 wheel drive, one of my auto hubs is broke so I am going to change to Warns. Why do the spindle nuts have to be changed?
With the hub off I see a snap ring on the end and the spindle nut is back a ways, I just don't see why it has to be changed?
Someone enlighten me please. I know there must be a good reason I just am not seeing it.
With the hub off I see a snap ring on the end and the spindle nut is back a ways, I just don't see why it has to be changed?
Someone enlighten me please. I know there must be a good reason I just am not seeing it.
Posting Guru
Joined: Jan 2001
Posts: 2,358
Likes: 3
From: Nebraska
I have factory style manual hubs on my 95 F-150, with automatic style spindle nuts. I'm thinking the PO changed out the automatic hubs to factory manuals. I also worked on 96 F-250 with this same setup, only with Warn hubs.
With the automatics, there is only an inner adjusting nut with a c-shaped clip keeping it from backing off. The automatic hub is designed to fit in and work with this type of nut.
I do plan to switch to the double nut style when I repack my bearings which I need to do sometime soon. I think I trust that more. But I've never had a bearing loosen up in the 80K I've had the truck. And who knows how long someone else ran it that way.
With the automatics, there is only an inner adjusting nut with a c-shaped clip keeping it from backing off. The automatic hub is designed to fit in and work with this type of nut.
I do plan to switch to the double nut style when I repack my bearings which I need to do sometime soon. I think I trust that more. But I've never had a bearing loosen up in the 80K I've had the truck. And who knows how long someone else ran it that way.
Senior User
Joined: Mar 2004
Posts: 115
Likes: 4
From: S.E. Washington
The spindle nut used with this type of automatic lock is too thick and may not allow the new lock to seat fully. I installed Milemarker locks, and there was about 1/32" of interference between the auto nut and the part of the lock that engages the splined shaft. I thought about grinding or machining away part of the meat, but I had already bought the "conversion kit," which are just four nuts and two washers that come on manual locked hubs, so I installed it.
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