BMW 31607503537 Inner Cv Joint Left

With an assistant applying brakes, break free the staked collar nut at the center of the rear wheel hub without removing it completely. The wheel hub collar nut is tightened to a torque of 420 Nm (310 ft-lb), so ensure the car is firmly on the ground. Deactivate and drain the air springs, then raise the rear of the car and remove the rear wheel. Remove exhaust components as needed, then take out the axle shaft mounting bolts from the differential flange. Support the rear wheel bearing carrier with a suitable jack and lift it so that the inboard side of the axle shaft clears the differential. Remove the staked collar nut and press the output shaft out of the wheel hub, then pull the axle shaft towards the center of the vehicle. For installation, follow the reverse order of removal, using a new collar nut and applying a light coating of oil to the contact face of the collar nut before tightening it firmly, but not to final torque. Activate and fill the air suspension, install the road wheel, and lower the car to the ground. With an assistant applying brakes, tighten the axle shaft collar nut to its final torque and stake the collar nut.

Axle shafts in vehicles employ two types of CV joint. The outer CV joint is a traditional design that delivers power from the axle shaft to the wheel hub, allowing for suspension and steering motion. The inner joint uses a triple roller bearing system to minimize vibration and noise, allowing the axle shaft to adjust for suspension travel. To replace a CV joint or boot, the axle shaft must be removed. The process starts by prying off the center cap on the road wheel and loosening the axle shaft staked collar nut at the wheel hub. Next, raise the vehicle and remove the front wheel, splash shield, front end reinforcement, ABS wheel speed sensor, and front brake caliper (without detaching the brake fluid line). Then, detach the tie rod end, tension strut, bushing, and control arm from the steering knuckle. Remove the axle shaft collared nut and disengage the shaft from the steering knuckle. Using a special tool, force the axle shaft inner CV joint shaft out of the front differential, catching any dripping oil. Replace the differential or bearing pedestal flange seal when the axle shaft is out and replace CV joint boots if necessary. Always replace the inner CV joint locking circlip. During installation, coat the sealing lip of the flange seal with transmission fluid and ensure the inner CV joint shaft locks in place. Use a new collar nut and fasten securely. Check and refill the front differential oil if needed.For front differential flange seal replacement, remove the axle shaft and steering knuckle together. Remove the old seal and install a new one, ensuring the seal's lip is lubricated with transmission fluid before reinserting the axle shaft. When replacing the outer CV boot, obtain a repair kit. Remove the axle shaft, release clamps, and remove the boot. After inspecting the CV joint, place new clamps and the boot over the axle shaft, secure with fresh lubricant, and reinstall.For inner CV boot replacement, again use a repair kit. After removing the axle shaft, detach the inner CV joint housing, remove the triple roller bearing, and replace the boot. Clean off old lubricant, install the new boot, replace the triple roller bearing, pack with grease, and reassemble. Always top off the differential fluid after any work.

In case of damage to the subframe or if a pressed-in bushing is worn, remove the subframe by taking out the complete axle assembly. Begin by raising the vehicle and removing the rear wheels, followed by the removal of air springs. Next, take out the exhaust system and exhaust heat shield, then detach the driveshaft from the differential, using stiff wire to hang the driveshaft from the vehicle. Remove the brake calipers and brake discs, ensuring to hang the calipers aside with stiff wire without disconnecting the brake fluid hoses. Remove the left and right ABS wheel speed sensors from the wheel bearing carriers and disconnect the parking brake cables from the brake shoe expanders. Remove the suspension level sensor connector and detach the vent line from the rear differential. Remove the shock absorber and support the subframe from below using appropriate special tools. Take out the four rear suspension subframe mounting bolts and carefully lower the rear suspension subframe away from the body. For installation, jack the subframe into position, install and tighten the mounting bolts, and replace the stop plates in their original position. The remainder of the installation follows the reverse order of removal, with attention to tightening suspension arms and shock absorber fasteners to final torque only after the vehicle is lowered and the suspension has settled, activating and filling the air suspension, adjusting the emergency brake, and having the car professionally aligned upon completion.