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Elimination of vibration of the steering wheel and the front of the machine
Vibration of the steering wheel at certain speeds occurs, usually in the case of unbalance of the wheels. Check | PERFORMANCE ORDER | | 1. Check tire pressure. | | 2. Make a test checkout. Define the problem as accurately as possible speed, road surface, turns and exits from them directly. | | 3. Set the machine on the stand. | | 4. Check the alignment of the rim. This wheel hubs or brake drums must protrude for flanging disc wheels, or at least have them flush. Otherwise, replace the rim. | | 5. Check wheel suspension, check with the impeccable condition of rubber bearings, joints, dampers and rims. | | 6. Remove and clean the wheel, while removing the stones from the tread. | | 7. Check wheel brake on bald spots, which are visible on a thin layer of residual tread formed with full braking with locked wheels. | | 8. Check the tread depth on the tires and compared with each other. When non-braking tire wear front or back, you need to adjust the collapse of convergence. This adjustment is necessary to make the convergence of the upper tolerance limit. |
A warning  For the measurement chassis requires an appropriate measuring system, which is usually available only to the service station.
| | 9. Make a screening check and check again for faults. |
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Check the height of battle and fight side wheels
| PERFORMANCE ORDER | | 1. Set the machine on the box. Set the appropriate time on the mic protector, and then on the side of the tire. Rotate the wheel slowly by hand, measure the maximum value of runout height and lateral runout, mark these places with chalk. | | 2. Required values: the maximum height of the battle - 0.8 mm; the maximum lateral runout - 1.2 mm. | | 3. If these values are not met, balance the wheels on stationary balancing machine. When the wheels have to be aligned in the same manner as in the car. Tapered tensioning device, centering the wheel in the centering hole are not allowed. Permissible residual unbalance, both balancing planes is 5 grams. |
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Eliminating heartbeat adjustment (alignment)
| PERFORMANCE ORDER | | 1. Vent the tire on the rim and paying. | | 2. Turn the tire on the rim by 120 ?�. | | 3. Inflate the tire again and check the runout adjustment. | | 4. If the maximum value is exceeded, rotate the tire on the rim of another 120 ?� and measure the runout adjustment. | | 5. If the maximum value will be sustained, balance the wheel. |
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Check runout height and lateral runout of the rim
| PERFORMANCE ORDER | | 1. Install centering rim without tire on the balancing machine or system. Set Time micrometer. |  | 2. Beating the height (H) and lateral runout (S) to check on the sheet, not paying attention to the irregularities in this case the material of the rim and the deepening of a valve that can prevent accurate measurement.
Required values: steel rim: H = 0.6 mm; S = 0.5 mm. | | 3. If the size is exceeded, the rim replacement. |
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Setting the wheels on the car
| PERFORMANCE ORDER | | 1. With the machine on the box to set the wheels so that the place of maximum runout adjustment was at the top. Tighten the screws in this position the wheel cross-wise with a torque wrench torque of 160 Nm. |
A warning If the difference in wear of the individual tires is small, the wheels with the lowest height and beating smallest weight unbalance mounted on the front axle.
| | 2. Make a screening check. If you show up again, beating Chuck or vibration helm, they are the result of the residual imbalance, which is eliminated in the car more balanced. |
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Wheel balancing on the machine
| PERFORMANCE ORDER | | 1. When balancing drive wheels is required to install both wheels of one axle on the rollers. | | 2. The drive wheels must be carried out the engine to the wheels rotate synchronously. Machines with four-wheel drive should be raised on both axes. Balance the axis of the series. | | 3. Make reference run. | | 4. If the problem persists, it means the radial and lateral movement of one or more wheels are too big. SRT means they can not be measured. In this case, can only replace the front or rear wheels. At the same tires must only be replaced in pairs. |
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