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Old 05-17-2015, 09:03 AM   #1
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Oil Bath Bearings

We have a 2015 Mobile Suite 38RSB3
It came with oil bath bearings, what are your thought's on them
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Old 05-17-2015, 09:45 AM   #2
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Best thing since sliced bread.
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Old 05-17-2015, 09:53 AM   #3
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It sure does say something about the Quality of you new Coach! Nothing better.....
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Old 05-17-2015, 10:02 AM   #4
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My coach came with grease bearings in the front, the first time I took it for a full service cost ~$600 which included a bearing lube.

On an annual basis I would do a visual check and then using a long syringe on the end of my grease gun and grease all the way around, I did this for ~4 years.

I then had my front bearings converted to oil bath for a cost of ~$400, which was not much more then what a grease job would have cost. I had this done at Josam's in Florida. They said to check the level annually and other then that leave it alone.

So far after 18 months and ~5000 miles no problems, glad I did the change, just one less thing to worry about going wrong.
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Old 05-17-2015, 10:09 AM   #5
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They are great as long as you use your rig once in a while. If you let it sit for several months the oil can dry out on the top of the bearing where it is above the level of the oil and allow corrosion to form. Takes a long time of sitting for that to happen though.
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Old 05-17-2015, 10:27 AM   #6
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ONE GOOD THING ABOUT THEM IS THEY CAN BE CHANGED TO REGULAR GREASE TYPE IF YOU DON'T LIKE THEM BY CHANGING OUT THE BACK SEAL.

Sorry for the caps!

My 15 MS 39TKSB3 has a grease zerk at each wheel. I will probable hand pack once per year.

DRV only offers oil bath upon request. Too many complaints.
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Old 05-17-2015, 10:54 AM   #7
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They are great as long as you use your rig once in a while. If you let it sit for several months the oil can dry out on the top of the bearing where it is above the level of the oil and allow corrosion to form. Takes a long time of sitting for that to happen though.
These are sealed systems, oil does not dry out........anything oil has been in contact with, there is a oil film left.
Wonder what the complaint's were? All big buses and all semi's use oil bathed bearings.......even on the trailer's........and there sure are a ton of them running the highways. Oil bathed bearings are a upgrade compared to greased bearings, and do not require yearly maintenance like greased bearings other than a visual look.
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Old 05-17-2015, 02:07 PM   #8
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That's it, they are running, they are not parked for months. My best maintenance practice as always been to use grease where possible. Way better then oil in most application. My only restriction has been ratation speed and trailer wheels rotate to slow to be concerned.
The only excuse for oil is less messy maintenance. I have replaced oil on failing oiled 12 inches in diameter bearings and they lasted years after the switch.
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Old 05-17-2015, 03:11 PM   #9
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Most over the road trucks have oil bath. Consider yourself to be one of the lucky ones. You have the best system.
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Old 05-17-2015, 03:40 PM   #10
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Run cooler (extended bearing life), less friction(better MPG) & mucho easier maintenance, what more do you need that that! Better that sliced bread!
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Old 05-17-2015, 03:43 PM   #11
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Have had oil bath bearings on all our DP's and wouldn't have them any other way.
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Old 05-17-2015, 03:51 PM   #12
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Best thing since sliced bread.
Not sure Id go that far... But then .... Might well be.

I agree.. On of the best ideas in a long long time.
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Old 05-17-2015, 04:29 PM   #13
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What about the rear bearings, they are "oil bath". Snow plow trucks, sit for 8 months and the bearings don't corrode.
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Old 05-17-2015, 06:51 PM   #14
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Oil Bath bearings are an upgrade from grease bearings, as has been already stated, less maintenance, visual check on oil level is all that is needed. Gear oil is used, same as in the drive axle of your TV. That being said, if you have to pull the hub, a new seal must be installed. And as for the rust, the oil film will hold up for many months, and I've seen vehicles sitting for years with no rust on the bearings.
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