Wheel Bearing Maintenance

Before removing the wheels, wheel maintenance should do the preparatory work, the car parked and set up a bridge in order to ensure the maintenance of safe operations.
(1) Remove the hub shaft head decorative cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If the disc brakes, the brake should be removed and then used pliers to remove the lock ring or locking pin.
(3) with a special tool to remove the hub;
(4) scrape ferris wheel bearing, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and dry with a cloth, and finally with a cloth to wipe the hub cavity.
(5) Check the wheel bearings and bearing races, found cracks, flaking and loose roller bearings and other phenomena, replace the bearings. If you find pitting on the bearing race, it should replace the bearings.
When cope with the situation
(6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the maximum wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Is not allowed to play glitches, pitting the journal to narrow the gap.
(7) Upon completion of all parts meet the requirements, the inner flanged ball bearing grease after release hub.
(8) When grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft cranial cavity Apply a thin layer of grease to make it play a role in rust. Note the hub cavity grease Do not apply too much, otherwise it will affect the cooling and braking.
(9) the hub and the outer bearings mounted back on the journal, hand-axis head adjustment nut, and then use the shaft torque wrench required to tighten the adjusting nut. After tightening the nut, turning left and right wheels laps should see bearing installation; on the other hand, by rotating the bearing and the race proper fit. At this time spherical plain bearings tightness appropriate wheels to rotate freely and not feel the axial clearance.
(10) Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.
(11) wheel bearings adjusted, with some mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, caused by bearing adjustment too tight, should be re-adjusted

appropriately relaxed bearing tightness.