Failures of air tank explosion frequently happened on some ZL50 loaders. Structu re composition and work principle of braking systems of the failed machines are analyzed in the article. Some factors that may induce explosion of air tanks are pointed out and some safety valves are added to the failed machines. Some ratio nal suggestions are presented to the manufacturers aiming at the original design deficiencies in braking systems of the machines. Failures of air tank explosion frequently happened on some ZL50 loaders. Structu re composition and work principle of braking systems of the failed machines are analyzed in the article. Some factors that may induce explosion of air tanks are pointed out and some safety valves are added to the failed machines. Some ratio nal suggestions are presented to the manufacturers aiming at the original design deficiencies in braking systems of the machines.