If I remember correctly, the collar and o-ring goes on the axle splines before you install the hub. It is common to see these parts missing.
Additionally, if I remember correctly, only the 1998 model had the collar. The 1999-2001 models used different hubs which didn't require the collar.
FYI
Your going to see water and crap in your old bearings when replacing them. That's why your replacing them. Once the bearings have slight play, the axle seals can no longer seal and you'll get water entry. Then the bearing destroys itself and develops enough play that you notice it and have to replace them.
The grooves are common to see on older, higher mileage machines. They do allow water/dirt to pass, and lead to "premature" bearing failure. Sometimes you can use a product called "speedy sleeve" to remove the grooves, but it's a hard product to find in the correct size, and it doesn't work in all areas. You can replace the axles and hub to remove the grooves ($$$), but in time the grooves will come back. These things are used in mud/dirt/etc....like a grinding compound.
Your best bet is to install high quality sealed bearings. Do not rely on the factory axle and hub seals. This way when water/dirt does eventually get past the axle seals, the bearing seals will keep it out of the bearing just a little longer and you'll get more life out of your bearings.
Additionally, if I remember correctly, only the 1998 model had the collar. The 1999-2001 models used different hubs which didn't require the collar.
FYI
Your going to see water and crap in your old bearings when replacing them. That's why your replacing them. Once the bearings have slight play, the axle seals can no longer seal and you'll get water entry. Then the bearing destroys itself and develops enough play that you notice it and have to replace them.
The grooves are common to see on older, higher mileage machines. They do allow water/dirt to pass, and lead to "premature" bearing failure. Sometimes you can use a product called "speedy sleeve" to remove the grooves, but it's a hard product to find in the correct size, and it doesn't work in all areas. You can replace the axles and hub to remove the grooves ($$$), but in time the grooves will come back. These things are used in mud/dirt/etc....like a grinding compound.
Your best bet is to install high quality sealed bearings. Do not rely on the factory axle and hub seals. This way when water/dirt does eventually get past the axle seals, the bearing seals will keep it out of the bearing just a little longer and you'll get more life out of your bearings.
