What key steering parts should be checked in a truck?

The correct answer highlights the importance of inspecting key steering components such as the tie rod and power steering cylinder. The tie rod connects the steering gear to the steering knuckle, allowing the driver to steer the vehicle effectively by transmitting steering input to the wheels. A faulty tie rod can lead to poor steering response or even a loss of steering control, making it critical for safety and vehicle handling.

The power steering cylinder assists in the ease of steering by using hydraulic pressure to enable smoother and more manageable steering, especially for larger vehicles like trucks. If there are issues with the power steering cylinder, it may become difficult to steer the vehicle, leading to potential hazards on the road.

In contrast, the other options refer to components that are not directly related to the steering system. The transmission and axles are more concerned with power delivery and vehicle movement, while the engine block and muffler deal with engine performance and exhaust. The fuel tank and brakes are crucial for vehicle operation and safety, but they do not pertain to steering effectiveness. Thus, checking the tie rod and power steering cylinder is vital for ensuring proper steering functionality and overall vehicular safety.