1 , Chengguan torqueconverte clutch for your considerations about the truck tire :

   ① load and under certain driving conditions , a suitable tire truck tire pressure when the tire pressure falls below the standard value when traveling in the tire radial deformation increases , excessive deflection of the sides , so that both sides of the tread ground , sidewall inner wall of the pressure on the tire side wall tension , tire cord body to produce large deformation and alternating stresses. Ply between the tire and the ground and the relative slippage is increased, increasing the heat generated by friction , the sharp rise in the tire temperature , the tensile strength of the rubber cyclical compressive deformation speed will return to the cord fatigue damage , decrease the tire when the cord loose and partial delamination, in case of impact produces a flat tire barrier . Tread uneven pressure , so that the shoulder portion of badly worn , a " bridge effect" tread jagged or wavy . Easy tread recess nails and stones embedded in the road , causing mechanical damage. Carcass increased rolling resistance , fuel consumption increases. Tests showed that when the tire pressure is below 20% -25 % of the standard value , a corresponding increase in fuel consumption by 20% . When the tire pressure is higher than the standard value when traveling along the ground so that the center of the crown , the contact area between tire and road surface is reduced , increasing the load on the unit area , the middle of the tread wear increased . Subject to overstretch the tire cord , stress increases carcass cords , cord fatigue process accelerated, causing the cord to pull off , causing early tire puncture.

② Under certain load and tire pressure, vehicle speed increases, the frequency of deformation of the tire , the carcass distortion and lateral vibrations and the tire circumferential deformation ( formation of stationary waves ) increases per unit time and the heat generated by internal friction increases, decreased performance of the tire , and even rupture of the tread ply peeling , accelerated wear and damage of the tire .

③ In certain tire pressure, tire deflection is increased to overload stress cord and the cord is increased, resulting in the sidewall portion cord easily break loose and ply delamination force of the carcass cords exceeds the design pressure of the tire contact stresses and allow the heat generated increases, the temperature rise of the carcass , carrying ability. While in contact with the ground due to generation of the shoulder wear, especially in the obstacle , even if a small stone will cause bursting of the crown . Practice has proved that , in turn and in the case of rough roads when the tire load exceeds 20% , it will shorten the mileage of 35% ; more than 50% , 59% shortening ; than 1 times , the reduction of over 80 %.

④ road conditions affect the life of the tire is also great, it affects the friction between the tires and tire conditions and subjected to dynamic loads .

⑤ high-temperature tensile strength of the rubber will allow to reduce elongation and hardness , so that the adhesion strength between rubber and cord drops , but also accelerate the aging of the rubber. At a high temperature in the tire , especially the aging of the tire , when there is sliding or rolling over an obstacle , it is easy to tear the crown tread . Rubber sidewall aging due to the generation of cracks and deformation of the tire wall cause serious carcass cords and the rubber layer separated , once encountered unexpected local load on the tire is likely to appear flat .

⑥ When the tire being fat , when acid is corrosive and prolonged effects , physical and chemical properties of the tire will change greatly reduce the carrying capacity , but also easy to use in a puncture . In addition, the tire by the oil seal etched appears massive gas layer peeling , mouth appear small area of ​​rubber tire off , and the carcass cords and rubber from other phenomena . Since the oil patch and rubber pro and can not , therefore , even wound tire damage is very small, and have lost the possibility of repair .

⑦ due to the different load distribution front and rear axles , wheels and steering wheel of the different work characteristics and differences in road conditions , the wear condition of the tires is inconsistent, if not replaced with the same on both sides of the axle plant, the same size , structure, hierarchy and patterns tires, tire wear will accelerate.

⑧ in use, if not pay attention with a reasonable and regular transposition caused by uneven tire bear the load , will accelerate tire wear .

 2 Chengguan torqueconverte clutch repair roulette learned :

    1 ) Order of the bolt hole mounted as worn, roundness error is greater than 1.5mm or uneven tire bolt bearing surface may be surfacing repair .

    2 ) Order of the crack between the bolt holes or large holes between the welding can be repaired.

    3 ) spokes and rim sealing off or if the connection is loose rivets should be re-welding or riveting weight .

    If the crack can be repaired welding 4 ) rims.

    3 Wheel Repair

    1 ) wheel hub bearing bore and outside wear more than 0.05mm, chrome should be repaired .

    2 ) oil seal bore uneven wear or have 0.15mm above dents can welding repair.

    3 ) contact with the brake drum circumferential surface should be flat , while its hub centerline runout greater than 0.1mm, should

    Turning to repair .

    4 ) when the brake wheel hub cracks open groove weld and car level.

    5 ) When fixed axle bolt hole thread damage , after surfacing , re- drilling tapping .

    6 ) in contact with the edge of the end face of the semi- circle beats axon is not greater than 0.1mm , the repair should be corrected .

    4 tire damage and repair

    Forklift tires inflated tires and solid tires . Tire inflation pressure specified by the original standards must not be too high

    Or too low. The high elasticity of the tire , the line layer is easily broken . Pressure too low will cause severe deformation of the tire

    , The temperature increased, resulting in breakage or degumming , can also move the worn tire bead on the rim , the tube severe

    Valves will be torn.

    ( 1 ) tire tire rip , piercing , when blistering, delamination and other damage should be repaired or renovated under the specific circumstances .

    According to county torqueconverte clutch aware, there is continuous around the tire carcass cracks , tread rubber has been polished and has a large hole, carcass layer full circle when the ring rupture and separation , should be replaced.

    (2 ) tube found in the eye holes , can be hot fill or cold fill .

    1 ) Heat up : the tube damage at around rough filing , will fire up stickers in damage , and keep the hole in the hole right in the center of glue and then clamp the tire fitted to the normalizing glue , tighten screw pressed again ignited the fire heating agent on the glue , to be 10-15min, to bond tightly.

    2 ) raw rubber patch ( cold patch ) : The tube break at around too rough filing , painted raw glue, the glue dry and then painted surface micro secondary glue , when the glue dried, students will be prepared to break stickers attached the mouth , pressurized and heated 140-145 ℃, holding 10-20min to make raw rubber vulcanization , after cooling , to bond tightly.