Description: A pitman arm is used on
vehicles with conventional suspension systems and parallelogram
steering. This type of suspension and steering arrangement is used
on virtually all rear-wheel-drive vehicles and many light trucks.
The pitman arm consists of a splined arm that connects with the
steering gear and a threaded bearing stud and seat. The lower part of the
threaded bearing stud is covered with a protective dust
boot that prevents dirt entry into the bearing and seat. The
upper part of the bearing stud connects to the
center link of the steering linkage.
Purpose: The steering gear shaft turns
in direct relation to input from the driver. The pitman arm attaches
to the steering gear shaft and acts as a lever, converting torque
from the steering gear to mechanical force for movement of the
steering linkage.
Maintenance Tips/Suggestions:
The pitman
arm should be
lubricated at
every oil change. The pitman arm, along
with other suspension components, should be inspected annually along with a
complete wheel alignment. The most common vehicle symptoms associated with a
worn pitman arm include play in the steering wheel, wandering, tire
edge wear, and loose or erratic steering.
Idler arm inspection techniques and specifications vary; have your vehicle
inspected by a qualified service professional.
