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Old 10-14-2002, 11:22 PM   #15
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We were out this weekend and I did the "walk-around" at one gas stop. Sure enough, one bearing was HOT, the other fine. Right then and there, I pulled out of the way and dug in to inspect the cause. Bearing was starting to fail. Was able to re-pack it and limp home (with frequent checks). Need new bearing though, because I waited too long to re-pack them.
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Old 10-15-2002, 07:31 AM   #16
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Grease fittings

towner

Dexter makes axles with internal passages and grease fittings. I had one of these axles on my last trailer (a TrailManor). There is a fitting in the center of the hob and an internal passage to the rear bearing. You jack up the wheel and pump in grease while turning the wheel until grease fills the cavity and pushes out through the front bearing. You then wipe off the excess at the hub. The result is a hub packed solid with grease. There is a rubber cap on the hub so that internal pressures won't push grease through the seals.

The first thing I noticed was that as soon as the hub was entirely filled with grease, the hub temperature went up quite a bit because of the drag of all the extra grease. The hub never got too hot to lay a hand on, but all that heat has to come from added friction. I figured I was paying with extra gas for the convenience of not repacking the hubs in the old way.

I'm just as glad to have the old type of hubs on the A/S. I'll repack them once a season.
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Old 10-15-2002, 09:56 AM   #17
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When you clean the bearings, what do you actually clean them with.
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Old 10-15-2002, 02:01 PM   #18
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Cleaning bearings

I use mineral spirits and make sure that they are completely blown dry with compressed air before repacking.
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Old 10-15-2002, 08:26 PM   #19
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i use kerosene in a small parts washer that is used for nothing else to avoid contamination. wheel bearings only. back before that i used kero in a coffee can then blew them out with compressed air, both ways worked fine.

john
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Old 10-15-2002, 08:38 PM   #20
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Drying Wheel Bearings

Tip
For years I would clean the bearings with Dunk and rinse with water, following the directions. Then I would slip the bearings on a couple fingers and blow the bearings with an air gun. The bearing would spin up very fast and dry completely in seconds.
My retired engineering buddy saw me do this once and said that letting them rev up dry was not wise as it could chip a bearing.
I am more careful now that I know.
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Old 10-15-2002, 08:43 PM   #21
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Air Dry

Use air to blow out the bearings is fine. But, resist the temptation to spin the bearings with the air. It sounds neat but it will remove the hardening and ruin the bearing, Guaranteed!

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Old 10-15-2002, 08:43 PM   #22
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wayne

you are correct, spinning bearings with compressed air is bad.

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Old 10-15-2002, 11:42 PM   #23
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Bearings

John,
You're right~! Repacking the wheel bearings is better than the alternative..FER SURE.

I just wished I had the kinda setup to be able to do it whenever..It gets COLD here in New England and, that's when you have the most off-road time..lol
Again, thanks for your input`~!
ciao
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Old 10-16-2002, 09:54 AM   #24
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SPINNING BEARINGS

Bearings should "NEVER" be made to spin with air.

Everyone knows what a hand grenade does.
Same thing with a bearing.

They can, they have, and will "EXPLODE", possibly killing you.

Exploding steel doesn't care who, or how, it hurts.

Blowing a bearing out with air is OK, just don't let it spin, EVER!!!!


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