The main job of the idler arm is to
a. support the left side of the center link
b support the right side of the center link
c. support the Pitman arm
d. keep both ends of the steering system level
The correct answer and explanation is:
The correct answer is a. support the left side of the center link.
The idler arm is a crucial component in the steering system of a vehicle, primarily found in vehicles with a traditional steering linkage setup, such as those using a recirculating ball steering mechanism. Its main function is to support the left side of the center link, ensuring that the steering components remain aligned and the system operates smoothly.
The steering system typically consists of components like the steering wheel, steering shaft, Pitman arm, idler arm, center link, and tie rods. The Pitman arm is attached to the steering box and moves the center link, while the idler arm supports the opposite side of the center link, keeping it in place and ensuring proper alignment. The center link itself connects the left and right tie rods, which control the movement of the wheels.
The idler arm is mounted to the frame of the vehicle, and it plays a role in stabilizing the center link. It helps to maintain the geometry of the steering system, preventing excessive play and ensuring that the wheels turn smoothly in response to the driver’s input. Without a properly functioning idler arm, the steering could become misaligned, leading to handling issues, uneven tire wear, or even complete steering failure.
To summarize, the idler arm is important for supporting the left side of the center link, which helps maintain the proper function and alignment of the vehicle’s steering system. This allows for smooth and responsive handling, improving the vehicle’s overall safety and drivability.