Applicable scope: Dong Kang C220 10, C230 10, Kang Dong Dong Kang 6CT8.3-12 related accessories: timing gear chamber, air compressor shaft working principle: pneumatic brake, brake gas installation position: the front end of the engine, a timing gear chamber above the fault and analysis: analysis of the causes of lack of air compressor pump or pressure. 1, air compressor pressure relief valve block. The valve plate deformation or fracture 2, inlet and outlet carbon driving belt between 3, air compressor and engine loose slip or air compressor to the gas tank between the pipeline rupture or joint leakage, 4 air compressor exhaust valve seal, the spring is too soft or broken, the air compressor cylinder head bolts loosening, trachoma and cylinder head gasket washed out and leakage 5, air compressor cylinder and piston and piston ring wear off even leak