Can you repack sealed wheel bearings?
Sealed bearings aren’t really sealed. You un-seal them, clean them out and regrease them just like we used to do back when hubs, headsets and bottom brackets used loose-ball cup-and-cone setups. This won’t work if the outside of the seal is aluminum.
Can you over pack bearings?
Grease guns can produce up to 15,000 psi, and when you overgrease a bearing housing, the lip seals can rupture, allowing contaminants such as water and dirt to gain access into the bearing housing. Keep in mind that lip seals usually fail around 500 psi.
Can you lubricate sealed bearings?
Useful in applications where harsh environmental conditions such as excess moisture or particulate contamination are present, sealed bearings typically fail when the lubricant – often a polyurea-based synthetic or highly refined mineral oil lubricant – fails due to heat and mechanical shear stress.
Do sealed bearings need grease?
FOR STARTERS, note that most sealed bearings come pre-greased from the factory with a 25%-35% grease fill. This is all the grease the bearings will ever need, because the relubrication interval (explained below) is longer than the expected life of the bearing.
How do I know if my bearings are sealed?
When trying to decide whether a bearing is sealed using the AFBMA or SKF code, note the shields or seals section. If the bearing number uses the AFBMA code, look for “EE” (or “2RSI” for SKF) to determine if the bearing is sealed on both sides. This is the only way to identify whether a bearing is sealed.
Is it okay to repack inner wheel bearings?
Generally speaking, if the outer bearings look okay, the inner ones are okay, too. If you’re not planning to repack the inner bearings, don’t attempt to take them out of their seat in the drum. 10 If you are repacking the inner bearings, slide the brake drum toward you, with the inner bearings still in place.
What’s the best way to pack wheel bearings?
To complete this step, there are a few tricks. To pack the wheel bearings, place the clean bearing inside of a plastic zip lock bag along with a liberal amount of new wheel bearing grease. This allows you to work the grease into each small wheel and bearing without causing a lot of mess outside of the work area.
How to repack wheel bearings for drum brakes?
Follow these steps to repack the wheel bearings for drum brakes: 1 Jack up the car and remove a wheel. Use jack stands for safety! 2 If you have a hubbed drum, pry the grease cap off the end of the hub, remove the cotter pin, and slide the castellated nut or nut-lock-and-nut combination off the spindle. Skip this step if you have a floating drum.
What kind of bearings did Harley Davidson use?
Up until 1999, the motor company used conventional, serviceable Harley wheel bearings. These were high quality bearings made by Timken. They were packed with grease and set against a bearing race with a wheel bearing seal on the outside end of the wheel hub to block out the elements and seal in grease.