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Old 01-04-2012, 03:06 PM   #1
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Vintage Axle Replacement ?

I have a 1970 single axle 23ft safari on which the wheels are getting hot when I travel. Someone suggested that I may need to replace the axle. Just wondering what others may think. BTW I have repacked my bearings and kept my brakes in order since I've owned the trailer. The heat issue is somewhat new.
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Old 01-04-2012, 03:17 PM   #2
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That sounds more like a case of brakes or bearings adjusted to tightly. I have found the hubs will run about 20 degrees above outside temperature as measured with an infrared thermometer in warm weather. (warm, but not too hot to touch)
I measure mine after stopping without using the trailer brakes after a run on the interstate.
I can not see the axle itself being responsible for a heat problem
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Old 01-04-2012, 03:34 PM   #3
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Quote:
Originally Posted by Trail Boss View Post
I have a 1970 single axle 23ft safari on which the wheels are getting hot when I travel. Someone suggested that I may need to replace the axle. Just wondering what others may think. BTW I have repacked my bearings and kept my brakes in order since I've owned the trailer. The heat issue is somewhat new.
Thanks
Perhaps this article can answer your questions.

The Dura-Torque Axle

Andy
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Old 01-04-2012, 04:05 PM   #4
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I agree the axle should not be the problem.

Tight bearings
Low on grease.
Wrong type of grease used.
Worn out race & bearing.
Under inflated tire.

Are both sides running hot?
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Old 01-04-2012, 04:47 PM   #5
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1970.... Your axles need replaced no doubt, sight unseen. BUT that is not causing this. It is the bearings or heavy braking.
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Old 01-04-2012, 06:02 PM   #6
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ahh,how hot? warm or HOT ????
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Old 01-04-2012, 09:26 PM   #7
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Thanks Everyone
I always check tire pressure so I don't believe that is the problem. When i stop on the road I can smell the brakes when I get close to the wheels. When jacked up the wheels spin freely but it sounds as if something is dragging. I've spoken to my mechanic (an Airstream Guy) and he has adjusted the brakes but nothing seems to help. The curb side is always warmer but they both get so hot you almost can't touch them. Wondering if I should try an auto Mechanic?
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Old 01-04-2012, 10:38 PM   #8
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Thanks Everyone
I always check tire pressure so I don't believe that is the problem. When i stop on the road I can smell the brakes when I get close to the wheels. When jacked up the wheels spin freely but it sounds as if something is dragging. I've spoken to my mechanic (an Airstream Guy) and he has adjusted the brakes but nothing seems to help. The curb side is always warmer but they both get so hot you almost can't touch them. Wondering if I should try an auto Mechanic?
Sounds like the bearing retainer nut is too tight.

Jack up one side.

With one hand on the front of the tire, and the other hand on the rear of the tire, see if there is a little slop when you try to push the tire in and out, or if you wish, wiggle the tire.

If not, then that says the retainer nut is too tight.

The proper way, is to tighten the nut gently, then back off until the cotter pin holes line up. Check to see if there is a little slop. If not, then back up one more hole and check again.

Since metal expands with heat, bearing retainer nuts should never be tight. If they are, they will very quickly over heat, and usually discolor, telling you that the bearing is ruined.

If any of the bearings are discolored, replace them, immediately.

Andy
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Old 01-05-2012, 04:48 AM   #9
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Totally agree with Andy. Many "expert" mechanics adjust them too tight. If you are a real bearing "expert", a little bearing preload is acceptable, but hard to achieve. Too much preload is asking for trouble.
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