yes oil is a way to thin lubracant and can become too hot were the ATV bearings will melt grease will also keep the pressure in tact unlike oil as it will spit it out every where when you go fast
You have to take the entire bearing out. No way to do it in vehicle.
When you take the old bearings out they should have a number on them, write that number down and take it to a skate shop, or store that sells bearings. or just take your trucks or the whole board to a skate shop they will help you out.
For the front wheels: Remove the wheels, take apart the brakes, remove the dustcap from the rotor, remove the cotter pin, castle nut, washer, and outer bearing, then replace the castle nut and yank the rotor off (the intention is to catch the inner bearing on the castle nut and pop off the grease seal and bearing all at once). Make sure to pack the new bearings with hi-temp disc brake grease or moly grease. Replace the races (important), grease seals, and cotter pins. For the rear wheels: Remove the rear wheels, and take the rear brakes apart. Then remove the rear differential cover and let the oil drain out. Remove the spider gear spindle and use a prybar to pry the inner axle end until it pops in a little. You should now be able to slide each half-shaft out and the wheel and axle bearings are inside. Again, make sure to replace the races and pack the new bearings with disc brake grease
Yes, most bearings are the industrial standard of 8mm unless you have special longboard trucks, most notably Bear 1052's or 1045's or Bear Smokeys, these trucks run 10mm but are not very common. If you can take wheels off with the same wrench on both trucks, then they have the same size bearings.
The front bearings are pressed into the hub. Take the axles out of the hub and remove the steering knuckle/hub assembly. Take them to a machine shop and have the bearings pressed out and back in again. The rear bearings you just take off the grease cap. Unstake the keeper washer and take the nut off. Then you can pull the outer bearings out. then replace the nut on the spindle and pull out again which will take the inner bearing out along with the seal.
It's certainly a good idea. In some older vehicles you can take them apart and re-grease them easily too. Your vehicle will definitely drive smoother after doing either.
You can if you take the bearing completely apart. There is no nipple
it takes grease not oil,you have to take it apart
First you take the pulley and the blade off. You unbolt the plates holding the bearing in place. Take it apart. Take the bearings off and put new ones on and put back together again.
take it apart and grease gear track inside.
you need a skate tool or you can take it to the local skate shop and borrow one off them you need nuts and bolts trucks bearings wheels and a deck