Upper Idler Service

[FrozenTows4]

Servicing the Upper Idlers can be a real chore.
To simplify this task, remove the paint from the shaft.

The upper idler bearing was designed to be an interference fit. The painted shaft makes it a press fit.
Removing the paint returns the bearing to an interference fit as designed.
Servicing, or replacing, is now much less of a core.

Credit goes to member DVW who has logged 10,000+ miles on this mod. It works.
Thank you Sir!

 

[putz21]

Does this method work regardless of skid? Yamaha Viper or Sidewinder?

 

[FrozenTows4]

Yes. Works on any ProCross skid. Yamaha or Artic.

 

[Mills]

Great but what do I use to get them off the first time? A standard bearing puller would wreck the wheels.

 

[FrozenTows4]

Great but what do I use to get them off the first time? A standard bearing puller would wreck the wheels.

Best way is with the proper puller like pictured in the beginning of the video.
Better yet is to borrow that puller. Last time you'll need it.
Dealer may pull it off for you. About a 5 minute job with the right puller.
Takes more time to take the tool out, and put away, than it does to pull the wheels.

Trying a 3 jaw, on the wheel, doesn't work. Don't even try.
Some attempt the punch & hammer method from the back side. Key is to only hit the inner bearing race.
Sometimes it works. Most times ends in disaster.

A 3 jaw puller will work if the wheel is removed. However this is pulling on the outer race. I will not trust a bearing removed in this way.

If bearing is being replaced, then any method is fine. Even cutting it off. Provide it doesn't damage the shaft of course.

 

[Sevey]

I have pulled the skid apart and placed the assembly in the shop press with two 1/2" plates sandwiching the upper idler wheel.

Very civilized but is more work for sure to take the rear skid scissor apart. But - "if you're in for a penny"......

I also have a length of pipe used to drive the new bearing (gently) back on the shaft. Works great.
MS