Emphasis block forward wheels to interfere with movement of the car. Lift a back part of the car and establish it on support. Lower the lever of the parking brake and install the gear shifting lever in neutral situation.
From under the car examine the driveshaft on lack of dents and cracks. In the presence of damages replace the driveshaft.
Check lack of leaks in junctions of forward and back parts of the driveshaft with the transmission and with reverse main gear. Existence of leaks in a forward part indicates wear or defect of a cuff of the transmission, and leaks in a back part demonstrate failure of a cuff of reverse main gear.
While the assistant rotates a back wheel, check a condition of universal hinges which have to rotate smoothly, without jammings and a visible side play. If the basic bearing of the driveshaft publishes noise, so it is worn-out or damaged and it needs to be replaced. Also check a condition of a rubber support of the bearing for lack of stratification and cracks.
Check a condition of universal hinges at motionless cardan to a shaft, having captured him two hands and trying to turn in one and other parties. Any side play indicates wear of hinges, in this case it is necessary to replace a forward or back part of the driveshaft.
At last, check an inhaling of bolts of fastening of the driveshaft.