This article may help. Taken from
http://www.aa1car.com/library/4wd_locking_hubs.htm
The full service bulletin is here
http://ww2.justanswer.com/uploads/s420/2009-10-15_053400_92_Explorer_4x4_clunk_tsb95-05-18.pdf and according to that nut and bearing are combined part number E3TZ-3N105-A.
TIPS ON FORD 4WD LOCKING HUBS
The following information is from Ford service article 95-5-18 and covers the automatic locking hubs on 1983-90 Bronco II, 1983-95 Ford Ranger and 1991-94 Explorer.
Ford used Warn Automatic Hublocks Model M350 on Bronco II and Ranger with the Dana 28 Axle from 1983-90 (through build date 10/4/89). Warn Automatic Hublocks Models M350A and M350B were used on the Dana 35 Axle in Bronco II, Explorer and Ranger for 1990-93 (begin build date 10/5/89). Starting with model year 1994, Ford switched to Warn Automatic Hublock Model M350C on Dana 35 Axle in the Explorer and Ranger.
The Model M350 hublocks are black while the Model M350A, M350B and M350C are white/silver in color. The Model M350 can only be replaced by Model M350 service parts. The M350C service kits should be used as replacements for M350A hublocks (released 10/89 as model year 1990 running change), M350B hublocks (released 4/92 as model year 1992 late running change), and M350C hublocks (released 8/93 as model year 1994 Job 1 change).
When automatic hublock servicing is required for any Ranger, Explorer, or Bronco II built from 10/89 through model year 1993, it is advised that both hublocks be replaced.
Ford also says that if an M350A or M350B hublock requires servicing, all the hublock components must be removed and replaced with service kit F3TZ-3B396-B, which is essentially the same service kit for the M350C hublock. The cam assembly of the M350A or M35OB should NOT be used with an M350C automatic hublock body, nor should an M350A or M350B hublock body be used with an M350C cam assembly
BTW i'm in wisconsin rapids, you can't be too far from me.
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