CADILLAC Brougham CV Axles

Description

A CV Axle is the drive axle on a CADILLAC Brougham that contains two constant velocity joints. CV axle shafts are mainly used in front wheel drive and all wheel drive cars. However, rear wheel drive cars with independent rear suspensions typically use CV rear axle halfshafts. Some all wheel drive vehicles use CV axle shafts for all four axles. Two different types of CV joint are used on CV axles in modern cars. At the "inboard" end, where the shaft only moves up and down with the movement of the suspension, a "Triax" (also known as "Tripod") joint is used. This has a three-pointed yoke attached to the shaft, which has barrel-shaped rollers on the ends. These fit into a cup with three matching grooves, attached to the differential. Since there is only significant movement in one axis, this simple arrangement works well.

At the outboard end of the driveshaft, a slightly different unit is used. The end of the CADILLAC Brougham CV Axle is splined which fits into the outer joint and is typically held in place by a circlip. The shaft fits in the center of a large, steel, star-shaped gear that nests inside a circular cage. The cage is spherical but with ends open, and it typically has six openings around the perimeter. This cage and gear fit into a grooved cup that has a splined and threaded shaft attached to it. Six large steel balls sit inside the cup grooves and fit into the cage openings, nestled in the grooves of the star gear. The outer shaft on the cup then runs through the wheel bearing and is secured by the axle nut

Purpose

The Constant Velocity Joints in a CV axle allow a rotating axle shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. The CV joint in the CV axle is extremely flexible, and can accommodate the large changes of angle when the front wheels are turned by the steering system.

Maintenance Tips/Suggestions

The only maintenance required on CADILLAC Brougham CV axle shafts are periodic inspection of the rubber boots that contain the grease to lubricate the CV joint. Check these boots for damage, cracks will allow the grease to leak from the boot and dirt to enter the boot causing damage to the CV axle shaft. It is best practice to replace the complete CV axle shaft if the boot or CV joint fails

Failure symptoms

A clicking noise when turning sharply at low speed is a symptom of a failing CV joint in the CV axle shaft. Cracked and grease leaking from CV boots.

WARNING

Ignoring these symptoms can lead to total CV joint failure rendering the vehicle inoperative.

AKA

Half Shaft, Constant Velocity Axle

Location

On front wheel drive vehicle the CV axle is located between the wheel hub and transaxle or transmission. On vehicles with rear independent suspension the CV axle is located wheel hub and rear differential.

Disclaimer

Depending on the year and options your CADILLAC Brougham has, the above information may not apply. Consult with a professional automotive technician or manufacturer for specifics on your CADILLAC Brougham