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sept 2006 service letter axle-wheel bearing

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PILOTDDS(at)aol.com
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Posted: Sun Aug 26, 2007 12:23 pm Post subject: sept 2006 service letter axle-wheel bearing

When doing routine maintenance on my nose wheel, due to a felt vibration, I inspected the axle and wheel bearing. I discovered the bearing was no longer preloading and the axle sleeve was spinning and damaging the forks. There was approximately a fifteen thousandths groove worn in the fork on one side only and the bearing was not preloading. When I originally made the installation, which was prior to Van's letter, I noted that I had to shorten the axle shaft on a mill in order to get the spacers to preload the wheel bearing. The bearing functioned well at the time and the wheel and tire spun with considerable resistance. In effect, I complied with Van's recommendation in the September 2006 letter. I am concerned that there may be other individuals with similar problems and I would recommend you check the front axles periodically. I know I am rehashing a subject that there was considerable comment on, but in light of the fact that I did comply with Van's recommendations I feel this may be somewhat of a new issue. I recall from earlier discussions some of you had used a set screw to prevent this from happening, if anyone has any information or reports of success, after some time in service, I would appreciate comment. It should also be noted, that I had the earlier stainless steel spacers. Great airplane. I hope everyone who is flying is having half as much fun as I am. 

 Sincerely, 

 Jim Rore

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Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Sun Aug 26, 2007 1:58 pm Post subject: sept 2006 service letter axle-wheel bearing

If I caught one of your closing comments, you were using the original

stainless one?  If so, I should note that despite anything Van's

says, that's a big no-no. Here's how mine turned out:

http://www.myrv10.com/N104CD/maintenance/20060809/index.html



I don't think I've yet started using the new ones. (Can't remember, I

might be though) But, I know I did secure them in place so that it

wouldn't cause any more wear.  It's a nasty problem, and I would

strongly state that NOBODY should continue flying with the original

stainless parts, if everything was done per-plans.  People NEED to

do at least something to prevent major issues, be it replacing

with the new parts, or securing the old so they can't rotate.

Some day, this one is going to bite a person big, when their

fork goes bad on them.



Tim Olson - RV-10 N104CD - Flying

do not archive

PILOTDDS(at)aol.com wrote:

 	  Quote: 	
		   When doing routine maintenance on my nose wheel, due to a felt 

 vibration, I inspected the axle and wheel bearing. I discovered the 

 bearing was no longer preloading and the axle sleeve was spinning and 

 damaging the forks. There was approximately a fifteen thousandths groove 

 worn in the fork on one side only and the bearing was not preloading. 

 When I originally made the installation, which was prior to Van's 

 letter, I noted that I had to shorten the axle shaft on a mill in order 

 to get the spacers to preload the wheel bearing. The bearing functioned 

 well at the time and the wheel and tire spun with considerable 

 resistance. In effect, I complied with Van's recommendation in the 

 September 2006 letter. I am concerned that there may be other 

 individuals with similar problems and I would recommend you check the 

 front axles periodically. I know I am rehashing a subject that there was 

 considerable comment on, but in light of the fact that I did comply with 

 Van's recommendations I feel this may be somewhat of a new issue. I 

 recall from earlier discussions some of you had used a set screw to 

 prevent this from happening, if anyone has any information or reports of 

 success, after some time in service, I would appreciate comment. It 

 should also be noted, that I had the earlier stainless steel spacers. 

 Great airplane. I hope everyone who is flying is having half as much fun 

 as I am.

 Sincerely,

 Jim Rore

 

 

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 http://discover.aol.com/memed/aolcom30tour

 

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