A truck consistently steers to the right. Which of the following is NOT a probable cause?

A truck that consistently steers to the right may have various underlying issues related to its alignment and suspension components. Among the options listed, a malfunctioning brake slack adjuster is not a probable cause for the steering behavior observed.

When a brake slack adjuster fails or operates improperly, it typically affects the braking performance rather than causing a vehicle to drift to one side. This malfunction usually results in uneven braking, increased stopping distances, or pulling to one side when braking, but it does not inherently influence the vehicle's steering alignment or overall directional stability.

On the other hand, incorrect caster and camber settings can significantly impact how the vehicle handles and steers. Caster affects the steering wheel's returnability and directional stability, while camber influences tire wear and cornering stability. Loose suspension components can also introduce elements of play in the steering system, leading to a lack of control and potential pulling to one side.

Understanding how different alignment and suspension issues impact vehicle behavior helps in diagnosing problems effectively and ensuring proper vehicle maintenance.