Faults gearbox and transfer case cause difficulty in shifting, spontaneous them off, or noise at work. Shortness of inclusion programs is due to the weakening bolts heads or plugs switching mechanism, jamming fixators, wear of bearings and hub gears. Spontaneous shutdown transmission occurs due to wear face and the working surface of teeth and clutch synchromesh gear teeth, the inclusion of incomplete transmission, reducing the spring pin. Noise in the gearbox caused by wear of bearings of shafts, breakage, deterioration or spalling of the working surface of gear teeth, low-grease. Faults driveline and the main gear of the differential and semiaxes are a consequence of prolonged use or poor maintenance. In the main transmission and differential are the main faults wear or breakage of gear teeth, crosses the differential and bearings as well as violation of the tightness of oil seals of the main gear. All of these faults appear noisy in the crankcase rear axle during the movement. Sign of malfunction driveline are knocks and blows at the time of pick-up vehicle from the place or move the car. This problem occurs when heavy wear spikes crosses and cups bearing universal joint. Driveline can cause excessive vibration and noise transmission in violation of balancing driveshaft. In the semi-axes major malfunction is to wear their spline teeth and the destruction of the torsional axis. Diagnostics of technical condition of transmission units, carried out before the maintenance, allows to conclude that the serviceability of components and their possible further exploitation in the performance of the relevant regulations. Transmission components are checked when the vehicle is moving, as well as on the load stand. In this case, depending on the design of the stand can be diagnosed on the slip clutch, gearbox, driveline and rear axle, the degree of wear of gears (the nature of the noise).
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