Automatic transmission once there is a fault, should be sent to the plant in a timely manner, can not be brought to the fault operation, so as to avoid greater losses.
Automatic gearbox for vehicle maintenance use many tools, in general there are some of the following: internal and external hexagon wrench, sleeve, torque wrenches, pliers, blunderbuss, file, tap, bearings, bushings, positioning ring pliers, electric wrench, a ratchet wheel, a jack, a safety bracket, electric hoist, dial indicator, gauge, million table and fault detection instrument.
Routine inspection project of automobile automatic transmission, automatic transmission oil, the oil level check, check the oil, automatic transmission oil cooler liquid leakage inspection, engine throttle opening inspection, selector selector knob check, automatic transmission is the control switch and inspection work, engine idle speed inspection.
Fault diagnosis and test program: preliminary inspection, fault code inspection and manual shift test, mechanical system test, hydraulic system, test control system test, check of common faults and causes analysis and elimination methods.
1, according to the analysis of the phenomenon of failure, to confirm the phenomenon of failure.
2, if it is an electronically controlled automatic transmission, and the fault indicator light, the first self diagnosis to read the fault code, troubleshooting the fault code on behalf of the fault.
3, the automatic transmission and the engine of the routine inspection, the main project is:
A. check the oil level and oil.
B. check and adjust the accelerator pedal position sensor and pull the solar term door.
Check the C. selector handle linkage system.
Check the D. neutral start switch and a shift switch.
E. check engine idle.
F. check tire pressure and other related parts of the transmission system.
4, the stall test, check the engine and automatic transmission internal mechanical technology.
5, manual shift test; determine the fault is in the electric control part or in the automatic transmission.
6, the time lag test, check the dynamic transmission of the clutch, brake wear.
7, electronic control system self diagnosis and components and line detection.
8, oil pressure test, check the oil pump, pressure regulating valve, governor oil pressure and oil pressure.
9, the road test, check the automatic shift point, there is no abnormal noise, vibration, slip and the braking effect of the engine, etc..
10, combined with the test results, analysis and determine the cause and location of the fault.