What is a Pitman arm?
A Pitman arm is an integral component of some power steering systems
. While the majority of modern cars use a rack and pinion system, many off-road, heavy-duty, and older vehicles still use conventional power steering systems, which feature a Pitman arm. The Pitman arm connects the steering gear to the steering linkage, which is usually a center link but can be a drag link or tie rod. As you turn the steering wheel, the Pitman arm converts the rotational movement from the steering box into lateral movement, allowing the steering wheels to move from side to side and control the car’s direction.
When should I replace the Pitman arm in my car?
Because there is no fixed replacement schedule for the Pitman arm, you’ll only need to replace yours if it fails. Here are the top signs of a faulty Pitman arm:
Steering instability: A bad Pitman arm can cause your steering wheel to have lots of play. If you have a faulty Pitman arm, the steering wheel will likely feel unresponsive and unstable.
The steering wheel wanders: A worn-out Pitman arm will most likely cause your vehicle to pull to one side or the other. The wheel may feel unstable and like it’s moving on its own.
Uneven tire wear: A faulty Pitman arm will most likely disrupt your vehicle’s alignment, resulting in uneven tire tread wear.
Complete inability to steer: If the Pitman arm fails completely, you’ll likely lose the ability to steer your car entirely. This is an incredibly dangerous situation, and you should replace the Pitman arm before it reaches this point.
Keep in mind: These symptoms can indicate other steering or suspension problems, like worn-out tie rods or bad ball joints. The best way to accurately diagnose your problem is to visit a professional mechanic.
How often should I replace my Pitman arm?
The Pitman arm is a durable steering component that is designed to last for the vehicle’s lifetime. That said, it is a wear-and-tear part that can fail over time. While there is no set replacement interval for the Pitman arm, you should replace yours if it fails.
The top signs of failure include steering issues, like a wandering steering wheel and the inability to steer your car altogether.
Can I replace my Pitman arm myself?
A Pitman arm replacement can be an excellent DIY project if you have the right tools and know-how. It’s a mid-to-advanced level job, and it does require some specialized tools.
For experienced hobbyists and home mechanics, the job should be simple enough to perform at home. But for auto repair novices, a Pitman arm replacement is most likely too advanced.
It’s also important to note that a front-end alignment is necessary following a Pitman arm replacement. That means even if you’re able to replace the Pitman arm in your driveway, you still need to visit a shop afterward for an alignment.