According Hengding automobile hub unit informed when installing bearings should clean environment, small particles from entering the bearing will shorten bearing life. Replacement of bearings to maintain a clean environment is very important. Not allowed to use a hammer percussion bearings, bearings do not pay attention to fall on the ground (or similar misconduct). Before mounting the shaft and housing should also check the status of even slight wear will lead to poor fit, thereby causing early failure of the bearing. .
Magnetometer equipped with ABS wheel hub bearing thrust ring, thrust ring mounted in order to determine which side, you can use something a little lighter near the edge of the bearing, magnetic bearings will be attracted by it generated. When installing the magnetic thrust belt loop while pointing inside, is on the ABS sensor. Note: Incorrect installation may lead to functional brake system failure.
The ring is equipped with ABS unit has a magnetic thrust bearing ring, which is not subject to the thrust ring collision, impact or collision with other field. Remove from the box before installation, so that they stay away from magnetic fields, such as the use of electric motors or electric tools. When installing these bearings, the road test by observing the dashboard ABS alarm pin to change the bearing operation.
The hub bearing unit, do not attempt to disassemble or adjust the wheel hub bearing seal unit, otherwise it would lead to water damage to seals or dust. Even ring and the inner ring raceway are damaged, resulting in permanent failure of the bearing.
Since the installation of the lock nut and bearing different bearing types, the size difference between the torque is great. Note reference to the relevant instructions.
According Hengding automobile hub unit understood how automotive wheel bearing repair and maintenance of automotive wheel bearings are important parts of the walk. Wheel bearings reduce friction bears chassis when operating, maintaining normal driving task. 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, wheel bearings must be scheduled for maintenance.
1 automotive wheel bearing checking
(1) Check the tightness of wheel 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 safely stand a good car.
(2) Rotate the wheel turns inspected to see if the rotation is stable, if there is no abnormal noise. If the rotation is not smooth and friction sound, indicating that the brake part is not normal; If there is no noise, and the rotation is not smooth when ebbed and flowed, indicating that the bearing part is not normal. When the above irregularities should be dismantling the hub. For small cars, checking 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 feeling of Songkuang and arrest; If there are obvious Songkuang swing feel, should be overhauled wheels.
(3) Check the braking areas. Usually when checking wheel bearings, check the wheels with brakes, tires if there are traces of oil inside, probably the brake cylinder or brake lines caused by the oil spill, it is timely to identify the reasons, be excluded.
Use in the car, the oil spill failures tend to occur, it will directly affect the technical performance of the car, resulting in lubricants, fuel waste, consumption of power, the impact of the car clean and tidy, causing environmental pollution. Since the spill, reduce internal engine oil, resulting in poor mechanical lubrication, inadequate cooling, can cause mechanical damage early, even leaving accidents. Hengding automobile hub unit to introduce you to spill causes and measures:
A common main reason for the oil spill vehicle
1, the product (accessories) quality, materials or workmanship is poor; structural design problems.
2, the assembly of high-speed improper mating surfaces dirty, damaged liner, displacement or failure to standardize procedures for installation.
3, tighten the nut force uneven or slippery silk rattling off snap off work as a result of the failure.
4, after sealing material worn over long-term use restrictions, aging deterioration, deformation failure.
5, add too much oil, the oil level is too high or mistake of oil.
6, parts (side cover classes, thin-walled parts) engaging surface deflection, the housing is damaged, so that oil leaking.
7, vent plug, the one-way valve plug, because the pressure difference inside and outside the enclosure role, often lead to seal leakage weaknesses.
Second, oil spill prevention measures for vehicles
1, emphasis on cushioning effect. Automotive standing parts (such as the end face of each engagement, each cover, shell, cover pads, flat enamel cover, etc.) between the components plays a leakproof liner seal. If the materials, production quality and installation does not meet the technical specifications, would not achieve the role of leak-proof seal, even accidents. If the oil pan or valve cover, due to the large contact area and difficult to compaction, the resulting oil spill. Note that when properly placed disassembly, carefully check, and then regulate the assembly.
2, various types of fastening torque car nuts are tightened regulations required. Pressure is not too loose tight liner would leak; too tight will make the metal bumps or holes around the threaded screw slide caused by oil spills. In addition, the oil pan drain plug back if not tighten or loosen off, likely to cause oil loss, and subsequent "Burnt axle" of engine damage accident.
3, the timely replacement of seal failure. Many parts of the vehicle moving home (such as oil seals, O-rings) due to improper installation, journal and seal edge misalignment, deflection and dumped oil. Some seals used for a long time lost due to the aging of rubber elasticity canal. Found leakage should be updated.
4, auto parts used for a long time will have worn off limits (eg, such as piston and cylinder), leading to the combustion chamber pressure gas into the crankcase and forcing oil leakage. Therefore, when the oil filler cap of the gas channeling serious, should try to repair or replace worn parts.
5, to avoid the one-way valve, through the valve blocked. Resulting tank shell temperature, oil and gas to fill the entire space, not discharge canal, so that the pressure rise within the enclosure to increase oil consumption and replacement cycle is shortened. After the engine ventilation system clogged, increasing the resistance movement of the piston, fuel consumption increases. Due to the pressure difference inside and outside the enclosure role, often lead to seal leakage weaknesses. Hence the need for regular inspection of vehicles, and clear, clean.
6, to properly resolve all kinds of pipe joint seals. Vehicle union nut often removable, easy to buckle and slide wire break loose; two joint bell poor accuracy, the two do not coincide with the center line of the cone and the bad; taper different and not consistent, which will cause oil leakage . Replace the union nut, with its conical grinding method to solve the sealing nut pressed while solving seal.
7, to avoid rejection of the oil hub. Wheel bearings and grease cavity excessive or improper seal assembly, poor quality and aging failure; wheel brake frequently caused by excessive temperature; axle nut loose, and this will lead to rejection of the oil hub. So useful "cavity lubrication" clear vent, strict selection of high-quality parts, and then assembled and high speed process specifications.
Third, the point of the vehicle maintenance and overhaul
In extremely clean conditions for assembly, parts work surface without knocking, no scratches, burrs and other attachments; strict rules, seals should be properly installed, do not be in place to prevent deformation; master specifications and performance requirements seals timely replacement of failed parts; side cover classes for thin-walled parts, the use of sheet metal cold do correction; easily worn shaft hole parts can be metallized, repair welding, gluing, machining and other processes in order to achieve the original size; Try using a sealant, paint used when necessary to achieve the desired sealing effect of alternative energy; nut off the slide wire buckle, loose should be repaired or replaced with new parts and tighten to the required torque; should be carefully examined before the appearance of quality rubber seal assembly; Use pressure with specialized tools, to avoid banging deformation; filling grease required regular cleaning to clear the air vent and a one-way valve.
