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Old 11-30-2016, 07:34 PM   #21
Outback 325BH
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Re: Wheel bearing issues on a 2012 raptor 300mp

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Originally Posted by rnkburg View Post
We did exactly that. I just can't understand why that one bearing keeps going while loaded


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Yeah, who knows. You'll just have to move the hub to see if the failure stays or follows. Maybe the race bore isn't true... and an extra load pushes it too far? Really grasping at this point.




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Old 11-30-2016, 08:38 PM   #22
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Re: Wheel bearing issues on a 2012 raptor 300mp

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Originally Posted by rnkburg View Post
I have dexter 7k axles on the trailer. This only happens when the sxs is loaded in the garage. The trailer sits pretty level on the truck. Maybe a little down in the front putting more tounge weight on it. And yes you would think they are readily available for bearings but it is very hard to obtain them here. I have started carrying spares believe it or not. What gets me is the new 300mp is a tri axle. Makes me wonder if they knew it was too heavy


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It is possible that the trailer is at the maximum, but I doubt that the entire model line is overweight. Yours is the first 300MP that we've had reports of failed bearings. Certainly, I'm not trying to minimize your problem, I know it's frustrating and shouldn't be happening, but I wouldn't think that it's a "every 300MP issue" or we'd be hearing from other members as well, and that's not the situation.... The newer models are constructed with triple axles, but even then, "all" or "most" of the older tandem axle models are functioning without the problems you have, so it doesn't appear that it's a "model wide problem" that's related to only having two axles.....

I'm still of the opinion that you've got either a damaged spindle or a faulty hub and that component is what's causing all of your problems. Maybe it was installed incorrectly, maybe it was faulty from the manufacturer, maybe it got damaged by hitting a curb or pothole, or maybe it is just "messed up for no reason"....

Until you isolate the two possibilities (hub and spindle) and see which one fails at the next problem, you won't know which it is. The only alternative would be to have a new spindle installed on the axle, buy a new hub/brake assembly and start from scratch.

I know it's not much encouragement, but hang in there, it's a frustrating issue, but there is a solution.
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Old 12-01-2016, 06:14 AM   #23
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Wheel bearing issues on a 2012 raptor 300mp

I'm pretty sure overweight isn't the issue. 14k lbs of axles allows for a pretty heavy trailer.

Properly installed bearings would require a significant overloading (way beyond GAWR) to cause a failure. You would have to bottom-out your springs before you saw issues.

I'm thinking this:
Bearing too tight (I'm leaning towards this)
Something wrong with hub causing the race to be crooked
Junk bearings


Just thought of something... is the nut washer installed? On curb-side, a spinning bearing could cause the nut to tighten.

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Old 12-01-2016, 03:19 PM   #24
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Re: Wheel bearing issues on a 2012 raptor 300mp

Don't come to Connecticut. or most of the Northeast.... "Doubles" on a RV are a Plains State thing. Here they'll SIDELINE you, and make your life as miserable as they can, for as long as they can!

Maybe a second TV, and a landscaper?

Sorry!

Good Luck,
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Old 03-20-2017, 01:35 PM   #25
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Well after a winter of one thing after another I am finally getting back on this. Called the dealer today sense dexter has a 5yr warranty on axles. Spoke with owner at boat show. They are calling dexter to inquire and it looks like it will be making a trip to dealership for a once over and then some


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Old 03-21-2017, 06:17 PM   #26
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Well no help from dexter. They said bearings have a one year warranty and that is that. Told dealer they should replace the axle if it looked bad (out of my pocket of course). So now I am looking for a local place to get some quotes on a new axle. No reason to tow it an hour and a half for an axle when I can get one done locally.
It still makes me wonder if I am going thru this if they make a stouter axle to put under there that would help handle the weight. Keystone did make it a Tri axle so there had to be a reason right?


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Old 04-21-2017, 05:34 PM   #27
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Ended up putting a new axle on the rear. We will see how that does


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Old 04-21-2017, 06:05 PM   #28
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Thanks for following up. I hope it works out.
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Old 04-21-2017, 06:55 PM   #29
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Thanks for the update. When they took the old axle apart did they find anything that might give you information about what might have been the cause?
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Old 04-22-2017, 02:05 AM   #30
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The place I took it just dropped the old one and put the new on. I went on and ordered it in special. Didn't go to a rv place ended up going to a trailer place


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Old 04-22-2017, 09:21 AM   #31
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Some previous posts have made reference to the Raptor 300 as possible going to a tri axle setup. As far as I know the Raptor 300 has always been dual 7K axles
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Old 04-22-2017, 09:59 AM   #32
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^^^ For 2017 it looks like they don't even make a 300 anymore.

Also, can someone show me a triple axle 300MP? I have yet to see one.
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Old 04-22-2017, 03:12 PM   #33
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I saw one at my dealer when I went for service a year or so ago. I don't know if it was special order or not but they had it


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