Analysis of the causes of oil leakage in automobile steering gears and explanation of steering gear repair methods
Analysis of causes and treatment methods of oil leakage in automobile steering gears
Nowadays, more and more cars have some quality problems, and the problem parts targeted are different. Steering gear oil leakage is also an aspect. Many car owners find that their car’s steering gear is leaking oil and go to 4S for repair, but usually the 4S shop will recommend replacing the steering gear. What is the cause of engine oil leakage? Is there any solution besides replacement?
1Causes of oil leakage in automobile steering gear
(1) The two bottom holes of the steering gear worm gear box are open to the inside of the box, and oil is leaking from the screw holes. Because the screw holes of the original machine are drilled through, or the screw holes are pushed through or cracked with a longer screw during maintenance, the lubricating oil in the box penetrates outward along the threads.
(2) Oil leakage from the bottom cover is mostly due to casting, which makes the surface of the cover uneven or the conduit hole is not perpendicular to the two planes, resulting in loose riveting or deflection of the conduit.
(3) The leakage of the gasket is often caused by the use of yellow cardboard. Yellow cardboard has strong adsorption of oil, coupled with uneven bolt torque, the side cover and bottom cover will deform, and leakage will occur when the number of gaskets is not adjusted properly.
(4) Oil leakage from the oil seal is usually caused by the poor quality of the oil seal, or the outer diameter of the oil seal and the seat hole are loose and fail to achieve an interference fit. The steering arm bearing hole of the steering worm box is concentric with the oil seal seat hole. The temperature is out of tolerance and there is leakage at the steering arm shaft oil seal. Or the steering arm shaft is loose and the shaft diameter is out of round or tapered, causing leakage.
(5) Leakage in other parts of the steering machine is caused by cracks in the casing, blisters, pores or loose metal on the sides of the screw holes. This is a drawback of the accessories.
2. How to deal with oil leakage in automobile steering gear
（1) In case of oil leakage from the screw hole, fiber thread or pad should be added to the root of the bolt to seal it.
(2) If the bottom cover leaks oil, the plane and holes should be reprocessed or pipes should be installed.
(3) If the gasket partially leaks, the gasket should be replaced with impregnated liner cardboard.
(4) Oil leakage from the oil seal should be solved by updating the oil seal, updating the bearings, grinding the shaft diameter, or updating the shell. .
(5) If the steering machine is broken and leaking, it can be repaired if conditions permit. If conditions are not met, accessories should be replaced.
In fact, when you go to a 4S store for steering gear oil leakage, many people recommend replacing it because 4S Shops or repair shops usually do not perform detailed repairs, so replacing the steering gear is the best way. In fact, in addition to complete replacement, we can also go to some machine repair shops that can perform detailed parts repairs for repairs. However, this method is only a temporary solution. You need to be more careful when repairing. Here are just suggestions for your reference.
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