Toyota 43430-0C020 Shaft Assembly, Front Drive, Left

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Loosen the rear wheel lug nuts, raise the rear of the vehicle and support it securely on jackstands placed under the frame. Block the front wheels to keep the vehicle from rolling off the stands. Remove the rear wheels. Position a jack under the rear axle differential housing. Disconnect the driveshaft from the differential. Fasten the driveshaft out of the way with a piece of wire from the underbody. Disconnect the load sensing proportioning and bypass valve height sensing spring from the axle. Detach all brake hoses or lines from the axle housing, then plug them to prevent fluid leakage. Remove the rear brake assemblies. Disconnect the parking brake cables from the brake assemblies and detach the cables from the rear axle housing. Detach the vent hose from the axle housing. Disconnect the shock absorbers from the spring seats or from the axle brackets. Disconnect the leaf spring U-bolts and remove the spacers, bumpers, and spring seats. Remove the rear driveaxles. Remove the rear differential mounting fasteners. Lower the jack under the differential, then remove the rear axle assembly/differential from under the vehicle. Installation is the reverse of removal. Tighten all suspension fasteners. On Sequoia models, tighten the four front mounting bolts first, followed by the two rear mounting bolts. On Tundra models, bleed the brakes.

Loosen the front wheel lug nuts, raise the front of the vehicle and support it securely on jackstands. Block the rear wheels to keep the vehicle from rolling off the stands. Remove the wheels. Drain the differential. Remove the grease cap. Remove the cotter pin and nut lock, place a prybar or large screwdriver between the wheel studs to hold the Axle Shaft and break the Axle Shaft/hub nut loose with a large breaker bar, or have an assistant apply the brakes. Remove the nut. Disconnect the lower control arm from the balljoint. If you're removing the left Axle Shaft, remove the left side shock absorber. Knock the Axle Shaft loose from the steering knuckle with a brass drift and hammer. Do NOT use a steel punch or strike the end of the Axle Shaft with a steel hammer; a steel punch or hammer will damage the threads or the splines on the end of the Axle Shaft. Swing the steering knuckle outward and pull the Axle Shaft assembly out of the steering knuckle, then detach the Axle Shaft from the differential. If you're removing the right Axle Shaft, tap the inner CV joint out of the differential with a hammer and a brass drift; if you're removing the left Axle Shaft, a slide hammer with a special hooked adapter (available at most auto parts stores) will be needed to pull the inner CV joint from the differential. Installation is the reverse of removal. Tighten the Axle Shaft/hub nut, then install the nut lock and a new cotter pin. Tighten the lug nuts. Tighten all suspension fasteners. For rear (Sequoia models), loosen the rear wheel lug nuts, raise the rear of the vehicle and support it securely on jackstands. Block the front wheels to keep the vehicle from rolling off the stands. Remove the wheels. Drain the differential. Remove the grease cap. Remove the cotter pin and nut lock, place a prybar or large screwdriver between the wheel studs to hold the Axle Shaft and break the Axle Shaft/hub nut loose with a large breaker bar, or have an assistant apply the brakes. Remove the nut. Knock the Axle Shaft loose from the knuckle with a brass drift and hammer. Do NOT use a steel punch or strike the end of the Axle Shaft with a steel hammer; a steel punch or hammer will damage the threads or the splines on the end of the Axle Shaft. Disconnect and remove the rear knuckle assembly. Swing the knuckle outward and pull the Axle Shaft assembly out of the steering knuckle, then detach the Axle Shaft from the differential. Attach a slide hammer with a special hooked adapter (available at most auto parts stores) will be needed to pull the inner CV joint from the differential. Installation is the reverse of removal. Tighten the Axle Shaft/hub nut, then install the nut lock and a new cotter pin. Tighten the lug nuts. Tighten all suspension fasteners.

To replace the axleshaft assembly, start by releasing the parking brake and raising the rear of the vehicle. Support it securely on jackstands and block the front wheels. Remove the wheel and, if equipped, the brake drum. If the vehicle has rear disc brakes, remove the caliper and disc. Remove the ABS sensor if the vehicle is equipped with ABS. Remove the brake assembly. Disconnect the parking brake cable and the hydraulic brake line to the wheel cylinder. Remove the four backing plate mounting nuts to detach the axleshaft from the rear axle housing. Pull the axleshaft out of the rear axle housing and remove the O-ring from the rear axle housing. Discard the old O-ring and install a new one before installing the axleshaft. Use a seal removal tool or a big screwdriver to remove the axleshaft inner oil seal from the axle housing. Use a seal installer or a big socket to install the new seal. If the axleshaft, bearing, or outer oil seal needs to be replaced, take the axleshaft assembly to an automotive machine shop. Drive a new axleshaft inner seal into the end of the axle tube with a seal installer or a big socket, and coat the lip of the seal with clean oil or multi-purpose grease. Install a new axle housing O-ring, applying a light coat of oil to it. Ensure the axleshaft is clean and free of burrs or metal splinters. Deburr any surface irregularities to prevent damage to the seal during installation. Lightly coat the axleshaft with clean oil and insert it into the axle housing, making sure the splined inner end doesn't damage the lip of the new axleshaft seal. Finally, tighten the four backing plate mounting nuts to complete the installation.

The rear axle assembly is a hypoid, semi-floating type with a differential that allows the outer rear tire to turn more quickly than the inner tire when the vehicle goes around a corner. The axleshafts are splined to the differential side gears, causing the inner tire to turn more slowly than the outer tire. A locking limited-slip rear axle is used on some models, which slows the rotation of the differential case when one wheel loses traction. On Sequoia models, a fully independent rear axle assembly is used, consisting of a differential and a pair of driveaxles with constant velocity (CV) joints. It is important to check for other possible causes before assuming the axle is the problem. Road noise and tire noise are often mistaken for mechanical faults, while engine and transmission noise can travel along the driveline. Overhauling the differential requires special tools and is best left to a professional repair shop. If the rear axle needs to be replaced, refer to the identification code and manufacturer's code stamped on the right rear axle tube for the necessary information.

43430-0C040