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The control arm purpose does not end there. It does that with the help of the jointed ends. The components synchronize the movements of the wheels with that of the frame, helping to dampen vibrations. During the times when you drive over rough surfaces on the road, it is the control arms that help to make the ride smooth. It connects the wheels to the frame, which adds to a vehicle’s stability. What does a control arm do in an automobile? The component serves several purposes. Here is a control arm diagram showing the different parts. It can be stamped steel, cast iron, or aluminum. The main body is the control arm link that connects the component to either end. Control arm bushings help to reduce friction and vibrations while the control arm ball joint forms the pivot at the steering knuckle or wheel assembly. It has its advantages and disadvantages (we will see about that in a minute).Ĭontrol arms feature three main parts: bushings and sleeves, main body, and ball joint. This type of suspension supports most of the weight on a strut, and the reason for the lack of an upper control arm. These are vehicles that use the MacPherson strut suspension. Modern, inexpensive cars mostly have a single control arm at each wheel- a lower control arm. This type of suspension system is called double “wishbone suspension,” and for reasons we will see shortly. These can be seen attached to the wheel assembly through ball joints while the other ends bolt to the vehicle frame. Some have two control arms on either side- an upper and lower one. The number of control arms on a single wheel varies depending on the type of vehicle. They can be an “A” or “L” shape, but some feature a simple shaft. Most control arm car parts are broad at one end and narrow at the other. Some heavy and high-end vehicles will have control arms in the rear axle as well. You will mostly find control arms in the front axles where they attach to the steering knuckle. That way, the component moves on both ends. The wheel assembly end of the control arm features a ball joint. It hinges on rubber or polyurethane bushings called control arm bushings. On the chassis side, a control arm mounts by means of bolts. They are the visible metal structures that run from the vehicle body to the wheel assembly. Although control arms come in different shapes and sizes, they are easy to recognize or spot.
Set up team z control arms how to#
How to Buy the Right Control Arm for Your Type of VehicleĪ control arm is the part that forms the link between the suspension of a car and the chassis. Lower and Upper Control Arm Replacement ProcedureĬontrol Arm Replacement Questions Commonly Asked To get us started, a look at what a control arm is.Ĭhapter 2: Control Arm Material and Assembly TypesĬhapter 3: Control Arm Problems and CausesĬhapter 5: Control Arm Diagnosis and Troubleshooting You can also choose to go straight to the topic that you are curious about or which will help solve a problem such as control arm replacement.
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Reading through the whole guide will make you fully knowledgeable about this suspension system component. These components look simple, with no moving parts, and many people mistakenly think a bad control arm cannot affect vehicle performance. Control arms are among the most ignored car parts. Whether a car owner or intending to become one, you will find the information contained here useful. The procedure to replace a bad control arm, and.Control arm diagnosis and troubleshooting.Control arm definition and its location in the suspension.It aims to help you ensure safe driving and smooth rides as a bad control arm affects both drivability and safety.
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This article contains information about this crucial component. Control arms are one of the most common vehicle parts, and you will find it in almost every automobile on the road.
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You may have heard people call it different names, such as “A” arm or wishbone. In a vehicle suspension system, there is one part that serves more than one purpose- the control arm.