Car Care: How to Grease Constant Velocity or CV Joint
CV joint grease is necessary in allowing the side shaft to rotate with less metal friction in order to give your wheels power and speed that will drive your car with an almost perfect engine performance. But when its boot gets torn or the grease has already lost lubrication, the constant velocity joint can crack and overheat. Avoid these problems by regularly greasing the CV joint.
Difficulty Level: Moderate
What you'll need:
- Moly-based CV joint grease
- Jack stands
- Wheel blocks
- Internal tool
- External snap ring pliers
- Flat tip punch
- Channel lock pliers
- Deep socket
- Torque wrench
Step 1: Engage the parking brakes, and secure the vehicle with wheel blocks on both the front and rear sides of the tires that shall not be lifted. And before taking out the drive axles, mark its orientation.
Step 2: Clean the bolts and cheese-head bits with a power-washer if leaks are apparent outside of the CV joint. Soften the gunk with solvent, and brush until deeply-caked grease is removed.
Step 3: Lower the drive axle from the vehicle by taking off the cheese-head bolts that join the axles, transaxle, and wheel hub using an internal tool. Also remove the CV joint bolts. When done, place the drive axle on a clean working surface, such as a clean rag.
Step 4: Gently tap around the edge of the CV joint using a hammer in order to detach the collar from the CV joint housing.
Step 5:Wipe grease off the CV joint end, and mark the latter with paint or nail polish, from the center shaft and across until the brim. Now, take the circlip with the aid of external snap ring pliers.
Step 6: Remove the shaft by pushing it out the end of the joint. If it doesn't go off, loosen it by tapping on the CV joint end with flat tip punch and hammer. And then, push it out again. Also remove the concave washer from the axle shaft using channel-lock pliers. Then you can slide the boot off the shaft.
Step 7: Remove the ball bearings by aligning the inner race with the outer race's grooves and tilting the inner race for the two to separate. You can now push the ball bearings out of the inner race.
Step 8: Clean the CV joint parts, and inspect for any damage. Replace if there are cracks or excessive wearing.
Step 9: Apply a small amount of grease on the inner race's ball bearing grooves first, and press the ball bearings back in place. After that, align the inner and outer races.
Step 10: Ensure that the CV boot is not torn before greasing the axle shaft opening. When done, slide the boot back. Put grease inside the boot.
Step 11: Get the concave washer through the splines of the axle with a deep socket and hammer. Now grease up the CV joint. Also apply some on the axle splines. Place the joint to the axle while being guided by the marks that you made earlier. Lock the CV joint with the circlip. And then, install the boot collar in place.
Step 12: Reinstall the drive axle to the vehicle. Make sure that the bolts are correctly torqued for a secure hold.