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Old 05-03-2010, 07:58 AM   #1
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Elk River , Minnesota
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Bearing greasing intervals

I have a 1996 Excella. When I pruchased it I took out the berrings and inspected them and they looked great. I cleaned and repacked them. I just went on a 3200 mile trip from MN to LA and checked them for heat every time we stopped for fuel. They never even got real warm at all.

So my question is when should I repack them again??


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Old 05-03-2010, 08:15 AM   #2
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Hello Steve,

I pull ours down annually to inspect the bearings and brakes. Its a peace of mind thing for me.




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Old 05-03-2010, 08:17 AM   #3
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We have Lucy's wheel bearings repacked every 10,000 miles, which for us, is about twice a year. At about 50,000 miles we had Lucy's brakes replaced. At this point we also put in new wheel bearings.

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Old 05-03-2010, 09:52 AM   #4
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Driving through standing water it is a repack soonest trigger.

Stuck brake and excessively heated drum-wheel-hub is a repack trigger.

Any others?

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Old 05-03-2010, 10:19 AM   #5
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Engineering Design Challenge?

Few people repack automobile wheel bearings any more. We know both are not the same with different components and operating conditions and characteristics. But still, its this an unmet engineering design challenge?
Is it impossible or too expensive to design and build trailer wheel assemblies with longer maintenance periods or MTBF (mean time between failures)?

Some I talked to said they never repack them and had no problem. But they check for over heating.
One guy said he repacks them because he has problems with them. (Maybe he isnt doing it correctly.)

I mean If we can land on the moon you know the rest.
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Old 05-03-2010, 10:28 AM   #6
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10,000 miles seems to be the standard recommendation. That being said these bearings appear to me to be no different than the front wheel bearings on my 2 wheel drive TV. I have re packed those bearings twice in 500,000 miles.
I think the repack intervals are way too often unless running in water like a boat trailer.
I do use good synthetic grease, but only pack or inspect the bearings when servicing the brakes.
I have never had a bearing problem in 40 years of trailering.
When I do a walk around I will sometimes check the temp by hand or with an IR thermometer.
Some of the grease used in older trailers years ago seemed very waxy and would dry out but with the newer lubricants there does not seem to be a problem
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Old 06-09-2010, 08:09 PM   #7
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I agree with Rick Davis post. That said, I just did a brake adjustment and I always shake the wheels when I have it lifted. Well... one of the wheels had about 1/3 inch runout at the outside edge of the tire. Trailer is fairly low mileage, less than 20K miles.

I pulled out the bearings, the outer bearing looked good but the inner bearing was absolutely toast. The bearings were full of grease, at this point contaminated from the extreme wear of the inner bearing. There was no sign of corrosion. The factory bearings were Koyo made in USA.

I replaced inner and outer bearings and races.

Probably a defective bearing or installation error.
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Old 06-09-2010, 08:31 PM   #8
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I think you just need to clean-inspect-repack when the brakes need replacement. But you need to use a high grade grease. $3.00 a tube grease is not high grade. I have 70k mi on my chev truck frt bearings and the brake pads are only half worn so it will have over 100k mi when the bearings get repacked.

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