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Yes. New ones are barely greased.

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When installing a new OEM wheel bearing last year, I broke the outer seal I guess you'd call it. I was shocked on how little grease there was inside. The grease was blue in color.
 

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2016 900XC Cinton Co Iowa
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New bearing in the left rear took 14 pumps! I greased it before installing so I could see and feel the difference. The other 3 good bearings took 20+. I also use Lucas Marine grease. About 2500 miles of moderate riding. No rock crawling or serious mud/sand. First time I did them. What intervals is everyone doing them at? I figured about every 6 months, depending on my rides.
 

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No rock crawling or serious mud/sand.
I'd say semi-annual to start and adjust. I know one 570 owner does his about every two weeks, but he drives his like it's a submarine... Swimming in Texas rivers and lakes...

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Ok, you guys have convinced me to grease my wheel bearings. :) What's the hot ticket to doing it quick and effectively? Wheel bearing greasers? Any tips/secrets?
 

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Ok, you guys have convinced me to grease my wheel bearings. :) What's the hot ticket to doing it quick and effectively? Wheel bearing greasers? Any tips/secrets?
Worse thing is to over grease them- as you will disturb the dust seal-
It's so easy these day's with the new style greaser -
 

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Ok, you guys have convinced me to grease my wheel bearings. :) What's the hot ticket to doing it quick and effectively? Wheel bearing greasers? Any tips/secrets?
Worse thing is to over grease them- as you will disturb the dust seal-
It's so easy these day's with the new style greaser -
So how do you know when to stop? When the seal starts to bulge a little or something? Just wondering.
 

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When the water/mud stops bleeding past the seal and pumping gets a bit harder. Before grease starts squeezing out.
 

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There are youtube videos showing it. There's a slot around the inside where the greaser flows grease into the inside of the bearing, thru the balls and out past the seals. You don't want to push grease past the seals, only the water and mud that may have seeped in if you're a mud bogger. If not, just enough to fill the bearing with grease; mine took about 20 pumps per wheel. Remember to watch both inner and outer; it may start venting excess grease on the side you're not watching!!
 
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