Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

Check of a condition of tyres and pressure in them (each 400 km (250 miles) run or weekly)

Regular check of a condition of tyres can help to avoid the troubles caused unforeseen stop in a way, connected with wheel descent. Besides, the condition of tyres can give the valuable information on the possible problems connected with malfunctions of components of a suspension bracket and a steering how there will be a breakage.

Фабрично established on cars of the given mark of the tyre are equipped semiinch (about 13 mm) by control tapes of deterioration which become visible at a wipe of a protector to depth of 1.6 mm. Degree of deterioration of a protector also can be defined by means of the simple and inexpensive adaptation known under the name of the indicator of deterioration of a protector - ask in shops of automobile accessories.

Pay attention to any abnormal deterioration of protectors. Presence of irregular defects of a protector, such as cavities, уплощенные from one of the parties, etc. tells sites, stronger deterioration about infringement of balancing or adjustment of corners of installation of forward wheels. At detection of such characteristic defects of a protector drive away the car in шиномонтажную a workshop for correction of infringements.

The given card of typical forms of deterioration of a protector will help you to define a condition of tyres of your car, presumably to establish the reason () deterioration and to choose measures on their elimination

Condition	The possible reason	Actions on reason elimination
Deterioration of edges	Insufficient pressure in tyres (deterioration from both parties of a protector)	Measure and modify pressure
	Wrong disorder of wheels (unilateral deterioration)	Make repair or replacement of components of the bridge or a suspension bracket
	Sharp manner of performance of turns	Reduce speed on turns
	Neglect performance of rotation of wheels	Make rotation of wheels
The central deterioration	Перакачаны tyres	Measure and modify pressure
The central deterioration	Neglect performance of rotation of wheels	Make rotation of wheels

Condition	The possible reason	Actions on reason elimination
Edges Istrepyvanie of drawing of a protector Face deterioration	Wrong convergence of wheels	Adjust convergence
Non-uniform deterioration	Wrong disorder or corner of a longitudinal inclination of an axis of turn (выбег) wheels	Make repair or replacement of components of the bridge or a suspension bracket
	The suspension bracket is faulty	Make repair or replacement of components of a suspension bracket
	Неотбалансировано a wheel	Make balancing or wheel replacement
	Ovality of a brake drum	Pierce or replace a drum
	Neglect performance of rotation of wheels	Make rotation of wheels

Attentively look narrowly at presence on tyres of cuts, the punctures which have got stuck in a pattern of a protector of nails and small stones. In certain cases the wheel after a puncture continues to keep pressure thanks to that the nail which has got stuck in the tyre stops up with own body an aperture. If the wheel starts to lower regularly slowly, first of all check up a condition and serviceability of the gate of a rating (nipple). Further examine a protector on presence in it of the nail which has got stuck in a puncture or other extraneous subject, and also the failed repair stoppers (radial tyres often are under repair by installation in apertures of special repair stoppers). If there is a suspicion on a wheel puncture, it can be checked up easily by means of a solution of soap water - after wetting of a surface of the tyre by a soap solution on a puncture site soap bubbles will start to arise. If defect is not too extensive, the wheel can be usually repaired in шиномонтажной a workshop.

If the wheel constantly slowly lowers, first of all check up a condition of a nipple of the gate of a rating (in shops of automobile accessories it is possible not задорого to get a special key).

Attentively examine internal walls of each tyre on presence on them of traces of a brake liquid. At detection of those immediately check up a condition of brake lines and the mechanism.

The rating of tyres with correct pressure allows to prolong essentially term of their service, and also considerably to raise comfort during movement. Correctness of pressure of a rating of wheels cannot be authentically defined by eye, in particular so far as concerns radial tyres. Here the special manometre is necessary. Try to hold constantly such in a ware box of the car. It is not necessary to trust indications of the manometres established on nozzles of hoses of pumping of wheels at gasoline stations.

Pressure in tyres always check at cold wheels. It means that after last using the car (at length of run more than 1,5 km) should pass not less than three hours. Pressure increase in hot tyres on 0,27 – 0,5 атм. Is the normal phenomenon.

Remove a protective cap from the gate of a rating acting from a disk/nave and densely press to it a manometre nozzle. Consider an instrument reading and compare result of measurements to the data appearing on шильде, the driver's door fixed on a rack. Do not forget to screw on the gate a protective cap in order to avoid hit in a dirt and moisture nipple. Check up pressure in all four wheels, in case of need make updating.

Do not forget to support also demanded pressure and in запаске (the given operation manuals on the car or the tyres put on a lateral wall see).