What Causes Heavy Steering Wheel in Trucks?
2 Answers
Truck steering wheel heaviness can be caused by the following reasons: 1. Power steering pump failure: Test whether the pump pressure meets standard values. If not, it will cause heavy steering. 2. Steering gear failure: If inspection shows low hydraulic pressure in the steering gear, this indicates the steering gear is causing the heaviness. 3. Low power steering fluid: Insufficient fluid can introduce air into the system, causing both heavy steering and noise during turns. 4. Clogged return oil filter in reservoir: Long-term lack of maintenance/replacement causes blockage, restricting fluid circulation and increasing backpressure, resulting in heavy steering.
As a truck driver with over 20 years of experience, I've encountered this issue too many times. The most common cause of a heavy steering wheel is a problem with the power steering system, such as insufficient power steering fluid or a leak. You need to check the dipstick to see if the fluid level is too low. Tires are also a big factor—low tire pressure or severe tire wear can make steering difficult. I once experienced the steering wheel feeling like it was tied up on the highway, which was terrifying. Additionally, an overloaded vehicle can make the steering heavier, especially when carrying excessive cargo. Worn or aging steering linkages and bushings are also common culprits, so have a mechanic check for any looseness. Remember, safety comes first. If you notice any issues, take your vehicle to a professional repair shop immediately—don't push your luck.
