13:26. Adjustment of angles of installation of wheels - the general description
Adjustment of wheels is an adjustment of angles of installation of wheels in relation to a suspension bracket and the road. If wheels are not adjusted, it not only affects driving, but also increases the speed of wear of tires. For forward wheels the convergence, disorder and a corner of a longitudinal inclination шкворня [See Fig.) is usually regulated. Adjustment of convergence/disorder of wheels is very exact operation. High-quality adjustment of wheels requires use of difficult and expensive equipment. So, it is recommended to address experts for adjustment of convergence/disorder of wheels. The general description of angles of installation of wheels is given below to give to you a general idea about them, and you could understand this question when address to auto repair shop better.
The convergence of wheels is a corner on which wheels are turned inside. The purpose of adjustment of a convergence of wheels is that wheels went in parallel. On the car at which the corner of a convergence of wheels is equal to zero the distance between forward edges of wheels will be same as distance between the rear edges of wheels. Really the size of a convergence of wheels usually makes several millimeters. On forward wheels, the corner of a convergence of wheels is regulated the provision of a tip of steering drafts. On back wheels, it is controlled by length of back cross drafts (N2). The wrong adjustment of a convergence of wheels will cause wrong
wear of tires, forcing them to rub about the surface of the road.
Disorder of wheels is a deviation of wheels from a vertical if to look in front of or behind the car. If the wheel is rejected outside in the top part, disorder positive (+). If the wheel is rejected in the top part inside, then disorder negative. The size of a deviation is measured in degrees from a vertical and this value is called a corner of disorder of wheels. Depends on the size of this corner what quantity of paths of a protector will be in contact about expensive, also, this corner is necessary for compensation of changes in suspension bracket geometry at turns and at movement along the uneven road. Its adjustment is carried out with use of the special tools intended for adjustment of disorder of wheels.
The corner of a longitudinal inclination шкворня is a deviation of an axis rotary шкворня from a vertical. The deviation is called a positive inclination шкворня back, and a deviation forward - negative.