4X4 hub o-ring part # and repair procedures - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 04-12-2007, 01:36 AM   #1 (permalink)
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4X4 hub o-ring part # and repair procedures

Well I tried the great search tool with no success. My hubs wont engage with the eos system. One of the hubs has an o-ring sticking out of the edge of the hub housing and the hub dial. I'm looking for the o-ring part # and a link for a write up on the proper repair procedures. Thanks for the help.
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Old 04-12-2007, 12:06 PM   #2 (permalink)
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Re: 4X4 hub o-ring part # and repair procedures

This ought to get you started, though it is just covering the lube of the esof system...lots of good info and part numbers:

http://guzzle.rbmicro.com/allube.html
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Old 04-12-2007, 01:33 PM   #3 (permalink)
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Re: 4X4 hub o-ring part # and repair procedures

Here's what I saved (contributed by TDS members)

Locking Hub O-ring (2) & retaining ring
4C3Z-1K106-AA

The exterior 0-ring is AS568A-152
Fractional size 3 1/4 x 3 7/16
Actual size 3.237 x 3.443
Width 3/32 (0.103)
McMaster-Carr 9452K173
The interior o-ring is AS568A-142 (the 143 size is ok also)
Fractional size 2 1/8 x 2 9/16
Actual size 2.362 x 2.568
Width 3/32 (0.103)
McMaster-Carr 9452K148
Bearings are INA #SCE248

I have manual hubs, and serviced them a while back, but wasn't able to get the knob out of the housing. I didn't try very hard, and didn't want to risk breaking them. The rest of the hub comes apart pretty easily, but I havent' messed with auto hubs. The link that 8V92TTA posted looks pretty good, also.
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Old 04-12-2007, 11:32 PM   #4 (permalink)
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Re: 4X4 hub o-ring part # and repair procedures

Well this is great info but I still have some questions. The o-ring that is bad is the one between the hub housing and the manual turn knob. The o-ring is actually sticking out from between the housing and the knob. What I need to know is if I can remove the knob to service the o-ring. Again thanks for the help.
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Old 04-13-2007, 02:20 AM   #5 (permalink)
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Re: 4X4 hub o-ring part # and repair procedures

If the Oring is black and (guessing at size) 2 1/2" in diameter you are talking about the hub lock Oring. If the Oring is yellow and closer to 4" in diameter thats the hub Oring.

Sounds to me like your talking about the black Oring. On an F250 I think you can pull the hub lock out with out even removing the wheel. There is one snap ring you need to remove with a pair of needle nose pliers then the Hub Lock will pull straight out. That O ring wraps itself around the Hub Lock.

Try this link click me
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Old 04-15-2007, 05:06 PM   #6 (permalink)
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Re: 4X4 hub o-ring part # and repair procedures

I just did this, well, new hub assy actually, but it took a bit of pulling to get my hubs off. I ended up using my oil filter wrench (not the band type), it had a large enough opening to grab and I could pull. Just pull hard once that snap ring is off.
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