Drives of the right "A" and left "B" wheels: 1 - inner joint retaining ring; 2 — inner hinge housing; 3 - large clamp for fastening the mudguard of the inner hinge; 4 - inner hinge mudguard; 5 — small clamp for fastening the mudguard of the inner hinge; 6 — right wheel drive shaft; 7 — damper; 8 — damper mounting clamp; 9 — small clamp for fastening the mudguard of the outer hinge; 10 — outer hinge mudguard; 11 - large clamp for fastening the mudguard of the outer hinge; 12 — outer hinge housing; 13 — left wheel drive shaft
Wheel drives with constant velocity joints (CV joints) are used to transmit torque from the main transmission to the drive wheels at various wheel turning angles and suspension travels.
The wheel drive consists of inner and outer constant velocity joints connected to each other by a shaft.
The drive shafts are made of steel rod.
The ends of the shaft have splines on which the CV joints are installed.
A damper is installed on the longer shaft of the right drive.
The drive joints are covered with dirt-protective covers.
The outer joint consists of a housing, a separator, a cage and six balls, which are placed in profiled grooves of the housing and the cage.
In the housing and the outer hinge collar, the grooves are made along the radius, which ensures the housing rotation angle relative to the collar of up to 42°.
The hinge sleeve is installed on the shaft splines and secured against longitudinal movement by a retaining ring.
The splined tailpiece of the outer joint housing, which has a thread cut on the end, is inserted into the front wheel hub and secured with a bearing nut.
The outer joints of the left and right wheel drives are interchangeable.
The internal drive hinge (type "Tripod") provides the possibility of angular movements of the suspension and compensates for the mutual movements of the suspension and the power unit by changing the length of the drive shaft.
On the splined end of the drive shaft, on the side of the inner hinge, a hub with three pins is installed - a three-pin hub, on each of the pins (journal) of which there is a roller with an outer spherical surface, rotating on a needle bearing.
The needle bearing is secured against displacement along the axis of the stud by a retaining ring located in the groove of the stud.
The three-spike is fixed on the drive shaft with a retaining ring.
The mutual movements of the suspension and the power unit are compensated by the movement of the three-stud rollers in the longitudinal grooves of the inner hinge housing.
The splined tailpiece of the inner joint housing is inserted into the axle gear installed in the differential box and is fixed in it with a circular cross-section retaining ring.
The inner joints of the left and right wheel drives are interchangeable.
The outer and inner hinges of the drives have detachable designs.
The hinge parts are manufactured with high precision.
The inner surface of the hinge housing is hardened by high-frequency current.
Balls of one sorting group are installed in the outer hinge.
When assembling a joint, the balls are selected for each joint individually, so it is impossible to repair a joint by replacing parts in a garage or service station.
A worn joint is replaced only as an assembly.
Before assembly, a special lubricant for wheel drive joints is added to the outer and inner joints.
The tightness of the joint, an essential condition for its reliable operation, is ensured by rubber mudguards.
The hinge cover is placed on the hinge body and drive shaft and secured with clamps.
When replacing the cover, the clamps that secure it should also be replaced with new ones.
Only special clamps with a smooth inner surface and without protruding parts may be used.
Replenishment or replacement of lubricant, as well as any other maintenance of the wheel drives during the operation of the vehicle is not required.
The car owner only needs to monitor the condition of the protective covers of the hinges and the clamps that secure them.
A damaged cover must be replaced as quickly as possible, since dirt getting into the lubricant causes rapid wear of the hinge parts and its failure.