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Huntindog
Phoenix AZ
Senior Member
Joined: 04/08/2002
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Bird Freak wrote:BarneyS wrote:Bird Freak wrote:I don't get all the concern about repacking bearings. OP has 800 miles since serviced. How often do any of you repack the front bearings on your car or truck?
Its the same bearing set up.
Not the same ball game! The front bearings on a car or truck do not see any of the huge side loadings that double axle trailers put on their bearings when they turn or back into a campsite. If the trailer wheels turned like a cars, then the side loadings would not be there and the recommended service interval would likely be much longer than it is now. Really it is about the same. On our class 8 trucks and trailers we would check and service bearings at about 100K miles. True the bearings are bigger but so is the load. I'm not a rookie mechanic as you can tell from my profile and I do believe some folks take the bearing service a little to far.
Barney...You need to take a ride with me in my IROCZ, and then tell me the front wheel bearings do not see huge side forces. Our trailer tires have very little grip compared to the high performance tires on a performance car. And grip on the road surface is the limiting factor on the force the bearings will see.
Huntindog
100% boondocking
2021 Grand Design Momentum 398M
2 bathrooms, no waiting
104 gal grey, 104 black,158 fresh
FullBodyPaint, 3,8Kaxles, DiscBrakes
17.5LRH commercial tires
1860watts solar,800 AH Battleborn batterys
2020 Silverado HighCountryC CD/A 4X4 DRW
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Huntindog
Phoenix AZ
Senior Member
Joined: 04/08/2002
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I will be going to oil bath hubs at the next bearing service.
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BarneyS
S.E. Lower Michigan
Moderator
Joined: 10/16/2000
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Heh Heh, you guys with the class 8 trucks and IROCZ's must surely understand that we are talking about normal people that drive regular cars and trucks - right? I agree that the front axle bearing loads could be higher in those vehicles but that is not what the discussion is about. Come on man, be realistic!![[emoticon]](http://www.rv.net/sharedcontent/cfb/images/biggrin.gif "biggrin")
Barney
2004 Sunnybrook Titan 30FKS TT
Hensley "Arrow" 1400# hitch (Sold)
Not towing now.
Former tow vehicles were 2016 Ram 2500 CTD, 2002 Ford F250, 7.3 PSD
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valhalla360
No paticular place.
Senior Member
Joined: 08/19/2009
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Good Sam RV Club Member
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BarneyS wrote:Bird Freak wrote:I don't get all the concern about repacking bearings. OP has 800 miles since serviced. How often do any of you repack the front bearings on your car or truck?
Its the same bearing set up.
Not the same ball game! The front bearings on a car or truck do not see any of the huge side loadings that double axle trailers put on their bearings when they turn or back into a campsite. If the trailer wheels turned like a cars, then the side loadings would not be there and the recommended service interval would likely be much longer than it is now.
I don't know about you but I don't corner nearly as hard with the trailer connected.
Backing into a site, it's maybe 50ft of low speed rolling. I doubt it's going to build up much heat and the forces are likely a lot lower than hard cornering in a car. I also typically pull forward a few feet to put a board under the low side, so any residual side loading gets relieved.
Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV
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Huntindog
Phoenix AZ
Senior Member
Joined: 04/08/2002
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BarneyS wrote:Heh Heh, you guys with the class 8 trucks and IROCZ's must surely understand that we are talking about normal people that drive regular cars and trucks - right? I agree that the front axle bearing loads could be higher in those vehicles but that is not what the discussion is about. Come on man, be realistic!
Barney The point is they ALL use tapered oppossed bearings. In the case of the class 8. larger ones and in my IROCZ smaller ones that typical TTs. There are no extreme forces that are unique to TTs. In fact TT bearings actually live a pretty easy life.
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