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are upper and lower ball joints the same

by Prof. Mariano Feest DVM Published 3 years ago Updated 3 years ago

Ball joints are ball-and-socket joints in the front suspension that serve as the pivot points between the wheels and suspension of your vehicle. On each side, the lower ball joint is pressed into and rests in the lower control arm, while the upper ball joint rests in the upper control arm.Apr 25, 2014

Full Answer

How do you check upper and lower ball joints?

How to replace ball joints

  • First of all, remove the wheel. ...
  • Now, the next step is to remove the ball joints. ...
  • Once you remove the bolts with the wrench, you can use the pickle fork to bang out the upper ball joints and a hammer to remove the lower ball joints.

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What are signs of a bad lower ball joint?

  • Is your vehicle at a very high mileage?
  • Are there any other complicated problems with your vehicle?
  • Is repair cost getting close or more than the value of your vehicle?

How to replace an upper ball joint?

Upper Ball Joint Replacement. This video will show you how to replace the Upper Control Arm Ball Joint on a Chevy Trailblazer, GMC Envoy, etc. Replacing a ba...

What are lower ball joints?

  • Compactness and low weight so they do not add unnecessary weight to the steering system
  • Constant torques in the face of varying loads and tensile or compressional forces
  • Zero or limited play- some should not exceed 0.25 inches for lateral play and manufacturer-specific value for the vertical play. ...

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Is there a difference between upper and lower ball joints?

The lower ball joint is the load-carrying joint in this type of suspension, while the upper ball joint is the “follower,” with no significant load to support. It acts only as a second pivot point for the steering knuckle.

Are ball joints universal?

Independent front suspension basics Ball joints are the critical components that connect your wheel hubs to the control arms. They provide universal pivoting movement between the wheel hubs and control arms to give you a safe, smooth ride and allow you to precisely control your vehicle.

What are the 2 types of ball joints?

There are two kinds of ball joints. Ball joints are classified as either load-carrying or follower types, and their position in the suspension varies depending on the suspension design. Load-carrying ball joints are designed to support the weight of the vehicle while providing a pivot point for the steering system.

Do upper and lower ball joints need to be replaced at the same time?

Many technicians recommend replacing both joints at the same time (both lowers, both uppers or all four). Another item that should be checked when ball joints are replaced is the stud hole in the steering knuckle — especially if the ball joint stud has broken or is loose.

Is it easy to replace ball joints?

Ball joint replacement is not straightforward, as they can be very tricky to access and install – especially with age and rust. On some cars, the ball joint is integrated into the control arm. If you're not familiar with the suspension and wheel assembly, it's best to visit a garage for a professional check.

How do I know if my lower ball joints are bad?

1:322:53How to Check if a Ball Joint is Bad - YouTubeYouTubeStart of suggested clipEnd of suggested clipThere should be no upward. And downward motion. In a ball joint. So when you're doing your test withMoreThere should be no upward. And downward motion. In a ball joint. So when you're doing your test with the tire on you'll feel this clunking.

Do upper or lower ball joints wear out first?

The lower ball joint usually takes the biggest hits and wears out first. Not only does it need to handle the load of the vehicle, but it also absorbs the shocks of potholes and other bone-jarring road hazards.

Do cars have upper and lower ball joints?

Depending on the type of suspension, most cars have both upper and lower ball joints. The lower ball joints are usually larger and wear out faster due to the weight of the front of car that rests on them.

What is upper ball joint responsible for?

They help form a connection between control arms and steering knuckles. This provides smooth movement within the suspension.

Can you replace just the ball joint without replacing control arm?

In order to know if just the ball joint or the whole complete lower control arm needs replaced, the lower ball joint will need to be disconnected from the steering knuckle and checked to see if it fits tight in the lower control arm. If it is loose, then replace control arm.

Can I just replace upper ball joint?

Some ball joints are built directly into the Control Arm and are not replaceable. Others are, either by being pressed, bolted, or riveted in. Most front-wheel-drive vehicles have only 2 lower ball joints on each side, as the upper pivot-point is accomplished by the strut assembly.

How much does it cost to replace all 4 ball joints?

In general, ball joints are inexpensive with a range between $20 to $80 each. Labor will vary greatly by model. Some vehicles cost as low as $60 to $80. Yet others, especially four-wheel drive trucks, can range from $160 to $200 per ball joint.

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