Genuine BMW 335i CV Boot

BMW 335i CV Boot Parts Questions & Experts Answers

• Repair Kit Bellows, Interior
  33217547081
  Q: How to replace a outer CV boot using a complete boot repair kit on BMW 335i?

  A: When replacing a CV boot, use a complete boot repair kit available from an authorized BMW dealer parts department, which includes a new boot, clamping bands, special lubricant, and a new CV joint shaft circlip. Begin by removing the drive axle and placing it in a shop vice with aluminum jaws. Release the retaining clamps from both ends of the outer CV boot, cut off the boot, and discard it. Use a soft-faced hammer to pound the outer CV joint off the drive axle, then pry the spring clip off the drive axle splines with a flat blade screwdriver. Clean the old lubricant off the axle splines and inspect the CV joint for galling, pitting, and other signs of wear or physical damage, noting that polished surfaces or visible ball tracks alone do not necessarily warrant replacement, while discoloration indicates a lack of lubrication. Place the new clamping bands and CV boot over the drive axle, replace the spring clip on the splined end, and apply Loctite®270 or an equivalent heavy-duty locking compound to the drive axle splines, ensuring that the locking compound does not contact the balls in the joint and is applied only as a thin coat. Pack the joint with fresh CV joint grease, with a lubricant capacity of 80 grams (2.8 oz) for the outer CV joint, then tap the CV joint onto the splined end of the drive axle until the spring clip snaps audibly into place. Use clamp pliers to secure the retaining clamp tightly, sealing the large end of the boot against the CV joint. Before installing the small boot clamp, flex the CV joint as far over as it will go and insert a small screwdriver between the boot and axle-shaft to eliminate any air. With the outer boot full of grease and air removed, secure the small end of the boot on the CV joint by pinching the clamp with pliers. The remainder of the installation follows the reverse order of removal. Finally, check the front differential oil level and top off if necessary.