Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Corners of installation of forward wheels - the general information

Installation of forward wheels is understood as adjustment of their angular position in relation to components of a suspension bracket and to a road covering. Infringement of corners of installation of forward wheels affects not only a management efficiency the car, but also and for speed of deterioration of tyres. Unique from parametres of corners of installation of the forward wheels, subject to adjustment on cars of the given mark are a corner of a longitudinal inclination of an axis of turn (выбег) and convergence of forward wheels.

Adjustment of corners of installation of forward wheels demands a split-hair accuracy, therefore for its carrying out it will be reasonable to invite the qualified expert having the necessary equipment. Composers of the given Management have made attempt to state in the given Section the basic idea of adjustment of corners of installation of forward wheels, for simplification of understanding owners of cars of process for the purpose of simplification of negotiations with representatives of a repair truck.

As convergence are called insignificant data of forward wheels to a car axis forward on its course. The purpose of adjustment of convergence is maintenance of parallelism of forward wheels during turn. On cars with zero convergence the distance between forward edges of wheels equals to that between their back edges. Usually the convergence size makes about 2.5 mm. Convergence adjustment is carried out by means of change of a tip of connecting steering draught. Infringement of convergence is at the bottom of premature deterioration of tyres owing to проскальзывания wheels on turns.

Convergence of forward wheels is always established by the positive.

Выбегом name an inclination of an axis of turn of wheels concerning a vertical in a longitudinal plane of the car. At an axis inclination back выбег it is considered positive, at an inclination forward - negative. Adjustment выбега is carried out by installation or removal of adjusting washers on a back part of the bottom levers of a suspension bracket.

Выбег (the inclination of the top end of an axis of turn of a wheel forward from a vertical) influences characteristics of self-return of a steering in a starting position; adjustment выбега is not among procedures of routine maintenance of the car, however its correctness should be checked each time change картера the forward bridge or levers of a forward suspension bracket is made.

Disorder (an inclination of a plane of forward wheels in relation to a vertical at a sight at the car in front) is established at assemblage of the car with a zero corner and is not subject to adjustment. If the corner of disorder of wheels deviates the established value, the faulty components which are at the bottom of infringement are subject to replacement.

At all do not do attempts to make adjustment of a corner of disorder of forward wheels by heating or a bend of the bridge or other components of a suspension bracket.