Be sure to find the source of the knocking and diagnose the suspension. Then try to tighten the steering rack. Try to find the cause of the backlash. To perform this operation, you definitely need a helper.
Grasp the wheel and start to shake it in different directions within the limits of backlash, at the same time your assistant should carefully watch on the driveshaft near the rail, ball end steering rods on the tight connection of the rods that should go from one to another. This is necessary in order to prevent the transmission of force on the wheel in the longitudinal direction when the crushing front of the car, which can happen during an accident.
Backlash in the rack or worm gear retracts by turning the adjusting screw. Remember that this procedure is feasible only if the steering rack is broken. Replace the propeller shaft – the only way you will be able to eliminate free play in it. Note that the main cause of wear of this part is lack of grease, which is grease.
Carefully tack weld the junction of the rods. The backlash in the coupling of these parts caused by wear on the rubber bands. Ensure that the welding was spot, which will help to contain these two parts when rotating, which will completely eliminate the occurrence of backlash. However, this method will not withstand the forces occurring upon impact during an accident.
Note the ball end, which can be in a broken state. In this case, swipe their replacement or repair. After work be sure to check whether there has been a positive result. Remember that eliminated backlash helm is not only a pleasant and comfortable driving, but also safer.