2. Maintenance of chassis components: maintenance of transmission, front wheel brake, steering gear, hydraulic vacuum booster, rear axle drum brake, main throttle and disc brake.
3, fault diagnosis and cleaning traditional ignition fragmentary fault diagnosis and cleaning, engine abnormal sound fault diagnosis and cleaning, brake fragmentary fault diagnosis and cleaning, diesel engine oil supply fragmentary fault diagnosis and cleaning, gasoline engine comprehensive fault diagnosis and cleaning, diesel engine exhaust abnormal fault diagnosis and cleaning, etc. I hope I can help you.