wind power bearing Repair and maintenance

How wheel bearing repair and maintenance
Automotive wheel bearings is important to walk parts. Wheel bearings reduce friction chassis bears during the operation, the task of maintaining normal driving the car. If a wheel bearing failure, may cause the phenomenon of noise, bearing fever, especially the front wheel is more obvious, easily lead to runaway direction dangerous phenomenon. Therefore, the wheel bearings must be maintained on schedule.
Check wheel bearings
(1) Check the tightness of wheel bearings, reali slim bearings first inspected the car at one end of the wheel hub axle set up, with the support car stool, wood and other appliances to cover the car a good car safely stand.
(2) Rotate the wheel a few laps examined to see whether the smooth rotation, if there is no abnormal noise. If the rotation is not smooth and there is friction sound, indicating that the brake part is not normal; if there is no noise, when the rotation is not smooth and tight loose, indicating that the bearing part is not normal. When the above irregularities should dismantling the hub. For a small car, check wheel bearings, with both hands up and down the side of the tire, the tire pulled his hands back and forth, repeat several times. If normal, then there should be no Songkuang and arrest feeling; If there are obvious Songkuang swing feel, should be overhauled wheels.
(3) Check the braking areas. Usually when checking wheel bearings, with wheel brake inspection, if there are traces of oil inside of the tire, probably the brake cylinder or brake lines caused by the oil spill, it is timely to identify the reasons, be excluded.
Wheel Bearing Maintenance
Before removing wheels, wheel maintenance should do the preparatory work, the car parked and set up axles, in order to ensure the maintenance of security operations.
(1) Remove the hub shaft head decorative spherical plain bearings cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If 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 wheel hub;
(4) scrape bearings, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and wipe dry with a cloth, wipe with a cloth wheels last cavity.
(5) Check the wheel bearings and bearing races, found cracks, fatigue spalling and loose roller bearings and other phenomena, replace 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 largest wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Burr is not allowed to play, pitting the journal to narrow the gap.
(7) Upon completion of all parts meet the requirements, the inner bearing grease after release hub.
When (8) grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge self aligning bearings 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 that the hub cavity do not apply too much grease, otherwise it will affect the cooling and braking.
(9) the hub and the outer bearing back onto the journal, hand-axis head adjustment nut, and then use the required shaft torque wrench to tighten the adjustment nut. After tightening the nut, turn the wheel a few times to be around to see the bearing installation; on the other hand, by turning the bearing and seat properly fit. At this time bearing 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, is caused by the bearing adjustment too tight, should be re-adjusted appropriately relaxed bearing tightness.
Non-normal wheel bearing damage causes
In the repair process, often found that some cars have a greater driving noise, no abnormal tire wear inspection, turn the wheels on the lift no abnormal sound. This phenomenon is often caused by abnormal wheel bearing damage caused by the so-called non-normal means of bearing mobile crane bearing damage caused by the installation of. Automotive wheel bearings are generally double row ball bearing, at the time of installation of the bearing installation if you use a hammer percussion, or when the bearing is installed into the bearing inner race of the bearing by pressing installed, will cause one side of the bearing raceways damage. Noise when the vehicle is traveling, and when the wheelie is better since the raceway side, and therefore noise was heard. Correct installation operation is the key to long life bearings.