91 Explorer Front Hub's
Will check back in a day or two will be out of town, thanks for the help and have a good weekend.
It looks like your chances may be good.
Last edited by jason86; Sep 20, 2005 at 10:27 AM.
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Contributed by David Van Horn
Ok. Let me tell ya a long story.
About this time last year, my 92 started making an intermittent buzzing, maybe one incident every month or so. Put it in 4wd, and the buzzing goes away. Hmm..
About a month ago, I took it in to sears for alignment, and when I get it back, I can't drive more than a block without SEVERE buzzing and chattering, again it goes away if I lock the hubs...
Lotsa talking, reading, and searching ensues, where I learn about how the hubs operate, and why they were buzzing. My dealer says $275 each, plus labour to replace, "nope, can't service them.." BS.
Folks, they aren't that hard. When the driveshaft in the front begins to turn, it operates a cam in the hub, that forces a piece to engage between the powered axle and the freewheeling hub. If this piece rubs, then it buzzes.
Why does it rub? Glad you asked! Failure of the ball bearing at the end of the hub! The bearing has too much slop. It rolls fine, but it allows the sliding assembly of half of the cam, and the sliding piece to contact the hub, and thereby turn the axle. This can get so bad, that it tries to engage the hub on the other side!
The ball bearing comes right out if you have a pair of snap-ring pliers, (maybe $10) and the bearings cost me $10.40 for the pair (One in left hub, one in right hub)
Put in the new bearings, clean up the sliding piece with a file, (just take off any burrs created by the rubbing) close it up and drive away!
The original bearing part number is NSK 6200Z, which crosses to a Timken 200S or an *** 6200.2ZR.C3
Call your local industrial "bearings-r-us", and make sure they have them in stock. According to midwest bearing (my guys) they are very common, and they usually stock them.
It's literally a one hour job, you will get greasy, but it's easy, and if you can change a tire, you can do this. All this repair happens in the part of the hub that comes off when you remove the front tire.
So remember the dealer quote, 2 x 275, plus labour (I don't know what they would have charged, but taking two tires off and putting them back on isn't much labour! Or, $10.40 for bearings, $10 for pliers you probably don't have (buy them at the bearing place) and a little gas to run down the parts.
My 4WD is humming again, my wallet is still nice and fat, and EVEN if it dosen't hold up forever (why?) I'm only back to what I had to figure on when I started.!!!
Oh yes.. I DID ask the dealer about replacing those bearings. "nope. you have to buy the whole assembly, the bearings aren't available as a replacement part". True enough, they AREN'T available from FORD..
Ford Trucks for Ford Truck Enthusiasts
I still think the manual hubs are more reliable though. I did have one "failure" with my Warn hubs--I was driving next to a deep rut and the ground collapsed beneath me and left me with all four tires off the ground. I tried jacking up the truck and putting some boards under the front passenger side so I would have three wheels on the ground but I was unable to get it out without having to get it pulled out. It turns out that the Warn hub got turned to "Free" at some point in my adventure. I now think I would have been able to drive it out with the boards and all if not for it being disengaged.




