When the engine of small concrete mixer stops, it is usually completed with the help of exhaust braking system. When it is necessary to shut down the engine, if the driver fails to shut down the engine in the normal way, it may be mainly caused by the rupture of the exhaust brake valve pipeline, the failure of the exhaust brake butterfly valve power cylinder, the loose linkage structure between the exhaust brake butterfly valve and the power cylinder, and the jamming of the oil valve line.
The specific inspection and maintenance are as follows:
(1) When the driver is unable to complete the engine flameout operation under normal operation, it is necessary to check the button valve and the stop cylinder first. If it is determined that the button valve fails or the stop cylinder fails, the circuit of the button valve should be checked and replaced in time, and the stop cylinder should be repaired at the same time.
(2) Check the exhaust brake butterfly valve and confirm whether the linkage structure between the exhaust butterfly valve and the power cylinder is loose. If the linkage structure is loose, tighten it in time. If the linkage structure is damaged, replace it in time.
(3) Check whether the throttle wire is stuck. If the throttle wire is stuck, it will cause continuous fuel supply. The throttle wire structure should be disassembled and inspected to eliminate the cause of the stuck, and replace the throttle wire with a new one.
In addition, in the process of vehicle driving, if the driver does not make full use of the exhaust brake to slow down, but uses the service brake to control the speed for a long time, it is easy to cause frequent friction between the brake shoe and the brake hub, causing abnormal heat generation of the brake drum, and reducing the braking effect.
For the brake failure of small concrete mixer, first of all, release the brake pedal. If the brake pedal returns slowly, it may be caused by the slow exhaust of the brake valve. If the brake pedal is fully released, the brake effect still exists, it means that there is brake drag on individual tires. If you have any questions about this, please come to our website Consult!