Is It Necessary to Replace the CV Joint If It's Leaking Oil?
1 Answers
CV joint leakage requires replacement. The primary reason for CV joint oil leakage is the damage to the external rubber boot, which leads to insufficient lubrication of the CV joint, causing severe wear and damage. It is recommended to replace it to avoid major losses due to minor issues. CV joints can be divided into three types: outer CV joint, inner CV joint (tripod type), and inner CV joint (six-ball type). The specific descriptions are as follows: 1. Outer CV Joint: In this type of CV joint, the steel balls are fixed in six windows of a cage between the inner race and the outer race. The steel balls are positioned exactly halfway in both the inner race and the outer race to determine the angle of the universal joint. The smooth surface treatment allows the movement of the universal joint to function like a helical gear. The six steel balls each push their respective ball tracks in the inner race and outer race, transmitting torque through the steel balls instead of gear teeth. 2. Inner CV Joint (Tripod Type): The tripod-type constant velocity joint does not have steel balls but uses three bearings with needle rollers that can slide within three tracks in the outer race. It is mainly used for the inner CV joint of four-wheel-drive vehicles, suitable for positions where the torsion angle is not large. It can slide inward and outward to accommodate the length changes of the drive shaft during vehicle movement. 3. Inner CV Joint (Six-Ball Type): This sliding-type constant velocity joint product has a different design concept, where torque is transmitted by steel balls in inclined tracks. The product performs exceptionally well, surpassing the TJ-type inner CV joint, but has a shorter sliding distance, which can address noise issues. It is widely used in four-wheel-drive vehicles.
