What Causes the Steering Gear to Fail?
2 Answers
Here are the reasons why the steering gear may fail: 1. Steering gear malfunction: If the inspection reveals low power steering fluid pressure, the heavy steering is likely due to the steering gear. In this case, professional repair services should be consulted. Generally, steering gear failures are mostly caused by piston or cylinder scoring, or damage to the piston sealing ring, which allows fluid to bypass the piston, preventing effective pressure buildup. 2. Power steering pump failure: If testing shows that the pump pressure does not meet the standard value, the heavy steering is clearly related to the pump. First, check whether the flow control valve and valve seat mating surfaces or the safety valve ball are not sealing properly. 3. Clogged return oil filter: Long-term lack of maintenance or replacement of the return oil filter in the reservoir can lead to clogging, obstructing the flow of power steering fluid and increasing the return oil backpressure, which also results in heavy steering.
As an experienced driver who has been behind the wheel for many years, there are several common causes of steering gear problems. The main one is insufficient lubrication. The steering gear requires oil to lubricate the bearings. If the oil pump fails or the oil passage is blocked, lubrication failure will accelerate wear or even cause jamming. Another reason is external impact, such as driving over deep potholes or curbs, where the steering gear may deform or break under sudden strong force. Aging is also a key factor. Over time, the seals in the car deteriorate, leading to severe oil leaks and excessive gear wear. I’ve also experienced the impact of poor driving habits—sudden hard turns increase the burden. The most dangerous situations are heavy steering or sudden locking, which can cause accidents. That’s why I always remind everyone to check the steering gear oil level during maintenance and replace the seals in time to prevent issues.
