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17-6-proverka-sostoyaniya-shin-i-davleniya-v-nikh.html
17.6. Check of a condition of tires and pressure in themWeekly or through each 400 km of run (that will come earlier)
Regular check of a condition of tires will allow you to avoid the troubles connected with stops in a way because of the lowered wheel. Besides, such checks give valuable information on possible problems with a steering and a suspension bracket before emergence in them serious damages.
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Tires are equipped with the built-in strips of indication of wear of a protector which are bared at decrease in depth of a protector to 1.6 mm then tires are considered as the worn-out. This size represents minimum admissible depth of a protector; it is in most cases recommended to replace the tires, which depth of a protector of 2 mm and less. It is also possible to determine depth of a protector by the simple and inexpensive adaptation known under the name of a measuring instrument of depth of a protector.
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Pay attention to any unusual wear of protectors. Such defects of a protector as cavities, cambers, uploshcheniye and stronger wear on the one hand indicate violation of corners of installation of forward wheels and/or wheel balancing. At identification any of the listed defects it is necessary to address for their adjustment in a shinomontazhny workshop.
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Carefully check the tire on existence of cuts, punctures and got stuck nails or buttons. Sometimes after a tire protykaniye a nail it still some time holds pressure or lowers very slowly.
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At suspicion on existence such «a slow puncture» at first check tightness of a nipple of the gate of a rating. Then examine a protector on presence at it got stuck strangers of subjects or closed up before the punctures which have started over again to pass air. If there is a suspicion that there is a puncture, to make sure of its existence it is possible, having moistened a suspected site with soap water. In the presence of leak solution will start to bubble. If not too big, the tire it is usually possible to repair a puncture in any shinomontazhny workshop. |
Carefully examine internal lateral surfaces of tires on existence of signs of leakage of brake liquid on them. If those are available, immediately check brake system.
Maintenance in tires of the correct pressure increases term of their service, helps to save fuel and improves the general quality of driving. The special manometer is necessary for check of pressure.
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Always keep an exact manometer in the ware box. Indications of the manometers which have been built in nozzles of air hoses at stations of service, often happen inexact. |
Always check pressure on cold tires (i.e. to a trip on the car). If to check pressure on the warm or warmed-up tires, it will lead to overestimate of indications of a manometer because of thermal expansion of tires. In this case never it is necessary to lower pressure since after tire cooling it will appear lower than norm.
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Screw together a protective cap from the gate of a rating acting from a disk of a wheel or from a cap of a nave, then densely press to the gate a manometer nozzle. Consider instrument readings and compare them with recommended in the Size table and adjusting data at the end of the Management. To prolong service life of tires, check pressure in them not less often than once a week by means of an exact measuring instrument (do not forget about a spare wheel!). Do not forget to establish into place a protective cap for hit prevention in the mechanism of a nipple of dirt and moisture. Check pressure in all four tires and if necessary pump up them to the recommended value of pressure. |
Do not forget to support demanded pressure and in a spare wheel.
Examples of characteristic wear of protectors of tires
Lateral wear
Insufficient pressure (wear from both parties)
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Insufficient pressure in the tire leads to its overheat at movement owing to an excessive deflection therefore the protector does not nestle sufficiently on a road surface. It leads to loss of coupling with the road and to excessive wear of a protector, not to mention danger of an exit of the tire out of operation as a result of an overheat.
Check and adjust pressure. |
Wrong disorder of wheels (wear on the one hand)
Repair or replace suspension bracket details.
Too sharp turns
Reduce speed!
Central wear
Superfluous pressure
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Superfluous pressure in the tire results in the accelerated wear of the central part of a protector, decrease in coupling with darling to more rigid movement and increase of danger of damage of a slope.
Check and adjust pressure. |
If you had to pump up tires for transportation of heavy cargoes to specified for this purpose in the Size table and adjusting data at the end of the Management of value of pressure, do not forget after that to pit it upon transition to a normal mode of operation.
Non-uniform wear
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Tires of forward wheels can non-uniformly wear out as a result of violation of adjustment of corners of installation of wheels. To check and adjust corners of installation it is possible for a moderate payment in the majority of shinomontazhny workshops. |
Wrong disorder or выбег
Repair or replace suspension bracket details.
Defect of a suspension bracket
Repair or replace suspension bracket details.
Wheels are debalanced
Make balancing of wheels.
Convergence of forward wheels is incorrectly established
Adjust corners of installation of forward wheels.
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The Obtrepannost of edges of a pattern of the protector, being a wear sign, best of all comes to light to the touch. |
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