Swing Arm Erosion

[waserman]

I was doing the suspension bearing greasing thing and came accross this when I removed the chain slider on the swing arm. I'm now thinking that I should have:
1 checked under my slider more frequently after a muddy/sandy ride
2 put some protective film/clear decal on the swingarm under the slider before ever riding
3 cleaned under there after every ride to prevent this from happening
Check out these photos and the wear from vibration and the dirt/sand/mud being trapped there. This may be something you want to do before you ride your new bike.Here is a shot of the bottom of the swing arm and the top, where the wear is taking place. The anodizing is long gone and ground away.

 

[benwiggin2]

will check. Thanks for the tip.

 

[SAM511]

I was doing the suspension bearing greasing thing and came accross this when I removed the chain slider on the swing arm. I'm now thinking that I should have:
1 checked under my slider more frequently after a muddy/sandy ride
2 put some protective film/clear decal on the swingarm under the slider before ever riding
3 cleaned under there after every ride to prevent this from happening
Check out these photos and the wear from vibration and the dirt/sand/mud being trapped there. This may be something you want to do before you ride your new bike.Here is a shot of the bottom of the swing arm and the top, where the wear is taking place. The anodizing is long gone and ground away.

That looks more like sand abrasion to me, not corrosion so much.
I guess we should all be more vigilant and run the pressure washer along under the sliders.
Good point.

SAM511

 

[R_Little]

It's normal...it's a dirt bike!

You can try to glue the buffer down. I glued a piece of innertube down once with shoe goo..it seemed to work.

 

[waserman]

Funny I don't ever remember this much wear from s**t being trapped under the slider on any of the previous dirt bikes I've owned . I'll just keep a closer eye on it, even my 98 610 after 10 years didn't look like this. I will say this if you use a preassure washer in the vicinity of the swingarm bearings you better pull them apart frequently, the outer seals on the bearings closest to outside of the swing arm will get water in them, just saying if you blast around the slider area . I'm looking for some clear decal material.

 

[HuskyTaylor]

Eastwoods sells clear plastic for auto rocker panels. I've had it on 06 van and it's still holding up.

 

[waserman]

Well I just found something that may have considerably contributed to this that I hadn't seen before.The slider mounting holes have cupped washer in 2 places that require 1 on the top and 1 on the bottom of the slider before you put a bolt in to hold it in place. The top only had 1 on the top and none on the bottom thus alllowing the slider to move more than it should. I will also do some clear just to help prevent this in the future allthough with the additional cup washer in place it is much more secure.

 

[Bagman]

It's normal...it's a dirt bike!

You can try to glue the buffer down. I glued a piece of innertube down once with shoe goo..it seemed to work.

+1

 

[PALMER84ONE]

Better check mine, I think that bolt fell out a while ago and I just replaced it with another bolt and no cups. Thanks for the post up.

 

[Ultra54]

It doesn't look like a big deal but why couldn't you just run a bead of shoe goo around the perimeter to seal out the crud, almost like a weld bead if you will.