Why is the steering wheel stiff and heavy?
1 Answers
The reasons for a heavy steering wheel include insufficient power steering fluid, low tire pressure, and overly tight bearing fit. Below is a detailed explanation of the solutions for a stiff steering wheel: 1. Insufficient power steering fluid: Normally, the steering effort feels relatively consistent. If it suddenly becomes heavy one day or gradually increases in resistance, it may be due to dirty power steering fluid, similar to engine oil, which needs replacement. Alternatively, a fluid leak reducing the fluid level can decrease power assistance, making the steering wheel heavy. This situation requires timely maintenance or replenishment/replacement of the power steering fluid. 2. Low tire pressure: Low tire pressure increases the contact area between the tire and the road surface, raising friction and making steering more difficult, resulting in a heavy steering wheel. This is unsafe for driving and requires immediate tire pressure replenishment. 3. Overly tight bearing fit: For the rolling bearings in the steering system, if they fit too tightly with sliding bearings, it can hinder proper lubrication, leading to sticking issues and a heavy steering wheel. In this case, inspect the mechanical parts and power steering system, or check for possible leaks or damaged intake seals.
