What you will do to replace a lower control arm and bushings
A control arm typically consists of a complete ball joint and bushings assembly attached to the suspension arm or wishbone arm.Lower control arm is generally easier to replace than upper control arm. The cost depends on the quality the brand and the time and place it takes to replace. It can vary greatly from vehicle to vehicle, for example the aluminum control arm is more cost than steel control arm, and in aluminum parts, casting is cheaper than forging parts while punching maybe less cost. The Porsche or Land Rover control arm maybe cheaper than Nissan Fiat control arms. Same situation on other steering and suspension parts such as stabilizer bar link, tie rod end, axle joint, wheel hub bearing etc. In some cases, Luxury Car's suspension parts is much more complex than economic cars, for example, the Lexus and Ranger Rover have more arms than Ford Fiesta or Fiat Uno Panda.
Let's see how to replace the control arm. To start with, you need to disconnect your car battery’s cable, jack up the front of the car, and remove the wheels, then place jack stands to make the car more stable. Be sure you are wearing safety gears (gloves and goggles) before you start everything. This bellow step by step ways:
1. Releasing the ball joint
2. Removing the sway bar link
3. Removal of the control bolts
4. Removing The Lower Control Arm
5. You Can Now Replace The Bushing
6. Removing The Old Bushing With A Hydraulic Press Machine
7. Installing The New Bushing
8. Reinstalling the lower control arm with new bushings
The lower control arms set the physical position of the bottom bearing of the wheel with respect to the rest of the car. This arm sets the longitudinal and lateral position of the wheel and the camber angle. It resists forces in three dimensions - longitudinal forces caused by road surface changes or acceleration and braking of the vehicle; cornering forces when turning; and vertical forces due to the weight of the suspended body. It is so important for the suspension and steering system.