3.5. Check of a condition of tires and pressure of their rating (each 400 km of a run or weekly)
The conscientious attitude to regular check of a condition of tires will allow the driver to avoid the annoying delays connected with a wheel exit out of operation during the movement. Besides, on the nature of wear of protectors it is possible to reveal beforehand the defects of components of a suspension bracket and the steering drive which are at a stage of development.
|
|
|
|
1. The minimum admissible depth of a protector makes 1.6 mm. It is possible to estimate degree of wear of a protector by means of special inexpensive adaptation (see an accompanying illustration) – ask in shops of automobile accessories. |
| 2. Pay attention to any signs of uneven wear of a protector. Such local defects of a protector as a cup-shaped wipe, flattening, etc., are usually obliged by the emergence to violations of angles of installation of forward wheels, or balancing of the last. For identification and elimination of malfunctions the car should be driven away in a specialized workshop of car service or on car repair shop. |
|
|
TIRE RATING PRESSURE IS NOT ENOUGH |
|
|
TOO HIGH PRESSURE OF THE RATING OF TIRES |
|
|
THE SCALY WEAR OF THE PROTECTOR CAUSED BY VIOLATION OF ANGLES OF INSTALLATION OF WHEELS |
|
|
CONVERGENCE ADJUSTMENT IS BROKEN, OR DISORDER OF WHEELS IS TOO BIG |
|
|
3a. Attentively examine tires of all wheels on existence of cuts, punctures and the foreign objects which got stuck in flutes of a pattern of a protector. Sometimes the punched wheel during some time continues to hold in itself air in view of the fact that the subject which punctured the tire continues to remain thrust in it. Defect of the nipple of the gate of a rating of a wheel can be the reason of slow sinking of the tire – check a condition of the nipple (see an accompanying illustration).
|
|
|
3b. Attentively check a protector for existence of the objects which got stuck in it or violation of tightness of landing of repair "traffic jams" by means of which repair of small punctures of the tire is made. It is easily possible to make sure available a puncture by wetting of the suspected site of a surface of the tire solution of soap water (see an accompanying illustration) – if the puncture takes place, water will begin to bubble. Punctures, insignificant in size, easily are under repair in tire workshops.
|
4. Attentively examine internal walls of tires of all four wheels on existence of potek of brake fluid on them. In case of identification of those immediately check a condition of the corresponding brake mechanisms and the hydraulic lines connected to them.
5. Support of the required pressure of a rating of tires will allow to prolong significantly service life of wheels, besides will provide the maximum comfort at the movement and will not allow to reduce controllability of the car. Remember that correctly it is almost impossible to measure pressure in the tire by eye, in particular, if it is about tires of a radial design. It is necessary to hold constantly near at hand the suitable manometer, – indications of measuring instruments of compressors of pumping on gas stations and car repair shops should not be trusted.
6. Check pressure of a rating of tires at cold wheels, – it is meant that the car passed no more than one mile within the last three hours. Remember that increase in pressure upon 0.3 ÷ 0.6 kgfs/cm 2 as a result of a warming up of a wheel is quite normal phenomenon.
|
|
7. Remove a protective cap from the wheel rating gate and densely press a manometer nozzle to an exhaust outlet of the gate, having wrung out a nipple rod (see an accompanying illustration). Consider the read instrument and compare it to standard data, in case of need correct pressure. |
8. Do not forget to screw on the place a protective cap of the gate in order to avoid hit in the nipple of moisture and dirt. Check pressure in all wheels, including spare.
|
|
Pressure of a rating of the spare wheel of compact type is usually much higher, than at usual wheels. |
|
|