Jeep Grand Cherokee

1993-1999 of release

Repair and car operation

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

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

Fabrichno established on cars of this brand of the tire are equipped semi-inch (about 13 mm) with control tapes of wear which become visible at a protector wipe to depth of 1.6 mm. Degree of wear of a protector also can be defined by means of the simple and inexpensive adaptation known under the name of the indicator of wear of a protector - ask in shops of automobile accessories.

Pay attention to any abnormal wear of protectors. Existence of irregular defects of a protector, such as cavities, from one of the parties, etc. tells uploshchenny sites, stronger wear about violation 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 a shinomontazhny workshop for correction of violations.

This card of typical forms of wear of a protector will help you to define a condition of tires of your car, allegedly to establish the reason (ы) wear and to choose measures for their elimination

Condition	Possible reason	Actions on reason elimination
Wear of edges	Insufficient pressure in tires (wear from both parties of a protector)	Measure and modify pressure
	Wrong disorder of wheels (unilateral wear)	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
Central wear	Perakachana of the tire	Measure and modify pressure
Central wear	Neglect performance of rotation of wheels	Make rotation of wheels

Condition	Possible reason	Actions on reason elimination
Istrepyvaniye of edges of drawing of a protector Face wear	Wrong convergence of wheels	Adjust convergence
Non-uniform wear	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
	Neotbalansirovano 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 existence on tires 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 tire stops up with own body an opening. If the wheel starts to lower regularly slowly, first of all check a condition and serviceability of the gate of a rating (nipple). Further examine a protector on existence in it the nail which has got stuck in a puncture or other extraneous subject, and also the failed repair jams (radial tires often are under repair by installation in openings of special repair jams). If there is a suspicion on a wheel puncture, it can be checked easily by means of solution of soap water - after wetting of a surface of the tire by soap solution on a site of a puncture soap bubbles will start to arise. If defect is not too extensive, the wheel can be usually repaired in a shinomontazhny workshop.

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

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

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

Pressure in tires always check at cold wheels. It means that after the last using the car (at length of run more than 1,5 km) should pass not less than three hours. Pressure increase in hot tires on 0,27 – 0,5 atm. 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 manometer nozzle. Consider 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 pressure in all four wheels, in case of need make adjustment.

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