Replace drive halfshafts

CV joint noise in the front axle calls for replacement drive halfshafts

AS with other Land Rover models the Discovery 4 delivers drive to the front wheels from the front differential via a pair of front drive halfshafts: a long shaft on the right-hand side and a short shaft on the left. Each drive halfshaft has two constant velocity (CV) joints, one at each end, which allows for the suspension to move independently and the steering to turn while constant speed drive is maintained. The inner CV joint is engaged into the front differential and the outer CV joint is engaged into the wheel hub. Like other CV joints, both use a grease-packed cage of internal components that are protected by rubber boots to prevent the ingress of water and dirt. When the joints are worn or damaged, the best option is to replace the complete drive halfshaft.

After 83,000 miles this 2012 Discovery 4 developed a loud clicking noise from both sides of the front halfshafts while being driven and turning. It had suffered a hard life and, although the rubber boots on the shafts looked to be in good condition, they could still have allowed water into the CV joints, so it was decided to replace both drive halfshafts. It’s not an overly difficult job because they can be removed and replaced without completely removing the wheel hub assembly. However, the front wheels need to be off the ground and access is needed underneath the vehicle to pry the driveshafts out from the front differential.

When ordering drive halfshafts it’s important to also order the correct halfshaft hub end nuts, which are not supplied with the shafts. We’re starting the job by removing the right-hand side halfshaft first, though the procedure is the same for both.