2.3.11. Check of angles of installation of wheels
Definitions
| PERFORMANCE ORDER |
| 1. Stability of the car at turn and the optimum provision of forward wheels in space are defined by four main corners which are expressed in degrees (except for a convergence corner which is expressed by the dimensional size received directly from measurements). |
| 2. Disorder of wheels is the corner formed by the plane of a wheel and the vertical line drawn through the center of a wheel and the platform of contact of the tire with a paving if to look in front of or behind the car. At "positive" disorder the top part of a wheel is displaced from a vertical from the car aside, at "negative" disorder the top part of a wheel is displaced from a vertical towards the car. |
| 3. Disorder of wheels is not regulated and given only for reference. This corner can be measured by means of special adaptation. If the corner of disorder of wheels differs from standard, then the car should be handed over on car repair shop for check by skilled personnel as wear or damage of details of a suspension bracket or body is the only cause of infringement of disorder. |
| 4. The corner of a longitudinal inclination of an axis of turn is a corner the formed axis of turn of a wheel and a vertical which is carried out through the center of a wheel and the platform of contact of the tire with a paving if to look sideways from the car. At a "positive" longitudinal inclination of an axis of turn the axis of turn is inclined in such a way that the line of an axis passes before the vertical which is carried out from the center of a wheel if to look on the car course. |
| 5. At a "negative" inclination the axis of turn passes behind the vertical which is carried out from the center of a wheel if to look on the car course. |
| 6. The corner of a longitudinal inclination of an axis of turn is not regulated and given only for reference. This corner can be measured at the special stand. If the corner of a longitudinal inclination of an axis of turn differs from standard, then the car should be handed over on car repair shop for check as only wear or damage of details of a suspension bracket or body can be a cause of infringement of disorder. |
| 7. The corner of a cross inclination of an axis of turn (SAI is usually designated) is the corner formed between an axis of turn and the line drawn through the center of a wheel and the platform of contact of the tire with a paving if to look behind or in front of the car. This corner is provided with a suspension bracket design. |
| 8. The convergence of wheels is a corner between an axis of the car and the line drawn through the center of a wheel in the horizontal plane. Wheels "meet" if are turned to each other and "disperse" if are turned in different directions on the car course. |
| 9. The convergence of forward wheels is regulated by rotation of tips of steering drafts at which the total length of both drafts changes. |
| 10. The convergence of back wheels is regulated by rotation of clowns on bolts of fastening of cross levers of a back suspension bracket to a body. |
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The angles of installation of wheels – check
For check of angles of installation of wheels use of the special equipment and sufficient experience therefore, it is expedient to carry out this type of service at car repair shop are required.
Balancing of wheels
It is expedient to carry out this type of service in service of car service or in a specialized workshop.
