Each half shaft consists of three parts: internal and external hinges of equal angular velocities (SHRUS) and the semi-axis itself.
The splined part of the outer hinge is inserted into the wheel hub and fixed with a nut. CV joints are lubricated with grease, which is replaced only when the joint is disassembled.
CV joints are installed on both sides of the axle shafts and provide smooth and efficient transmission of torque when the suspension is working and the front wheels are turning. The outer CV joint consists of a body, separator, inner race and balls. Grooves are made in the hinge body and cage to accommodate balls. The grooves of the longitudinal plane of the axle shaft are made along the radius, which provides a large angle of rotation of the outer hinge. The inner hinge differs from the outer one in that instead of balls, rollers are used, which are fixed on the axle shaft.
On the right side, due to the large length of the axle shaft, the internal hinge is located approximately in the middle of the axle shaft length, and the intermediate support bearing is fixed in the suspension of the power unit installation.
Covers should be checked periodically for damage and grease leakage.
Lubrication from the hinge follows when the protective cover is torn or the fastening clamps are loosened.
Torn protective covers of CV joints must be replaced immediately, otherwise damage to the hinges may occur. Replacing the cover includes removing the axle shaft.
Vibration and increased noise when starting off, engine braking and sharp turns occur when the constant velocity joints, spline joints of the axle shaft are worn out and when the wheel bolts are loosened.
If signs of a half shaft malfunction are found, then the nut securing the drive shaft to the hub should be unlocked and checked for tightness. After tightening the nut to a torque of 325 N·m, lock it by driving the shoulder into the groove on the axle shaft (or by installing a new pin).
A sign of a malfunction of the internal hinge is increased noise, which changes in time with the speed of movement. In this case, the axle shaft must be replaced.
Attention! Under no circumstances should the vehicle be lowered onto the wheels with two or one of the drive shafts removed, as this will damage the wheel bearings. If it is necessary to install the car on wheels and move it with the shafts removed, install its external hinge instead of the shaft and tighten the hinge fastening nut to a torque of 50 Nm. Replace the drive shaft mounting nut, which is fixed by crimping the collar, when installing.