Acura CV boot replacement

Published: 28th August 2007
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An Acura CV boot is a protective rubber boot that covers the flexible ends of a vehicle's drive axles. This boot contains both large and small ends, and looks similar to an "accordion funnel." A typical Acura CV boot is connected to the axle with a metal band clamp on either end of the boot that presses the CV boot against the axle to keep it in place. Inside the boot is a special grease that lubricates the CV joint. The CV boot prevents the grease from drying out. More importantly, it keeps dirt and grit from getting in and mixing with the grease to form an abrasive paste, which can cause damage to the CV joint. The CV boots flex as the CV joints curls, resulting to stress to the rubber.

The outer CV joints flex more than the inner ones. As the car undergoes steering, the outer boots are more exposed to tearing. When the Acura CV boot gets torn, the CV joint should be cleaned and repacked, and the boot replaced. If a torn CV boot is not detected in time and the joint is damaged, either the joint is replaced with a new one or the entire axle with a rebuilt unit.

A new Acura CV boot is often soft and supple and have no cracks. As it ages, it becomes harder, and it begins to crack. CV boot conditions are classified in four ways: good, lightly cracked, heavily cracked, and torn. The outer CV boots can be seen by turning the steering wheel to the maximum, and looking at the center of the front wheel's back side.

Replacing CV boots involves removing the entire axle from the car and removing one or both of the CV joints from the axle. Once the joint is off, the remnants of the old boot are removed. The old grease is cleaned out, and fresh grease and a new boot are installed. The joint and new boot are then clamped in place.

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