一台山推TY320型推土机配置康明斯NTA855-C360型柴油机,汽缸发生穴蚀,冷却水进入曲轴箱,致使柴油机无法使用,因此决定对这台柴油机进行大修。将柴油机解体、清洗后进行技术鉴定,根据鉴定结果,将曲轴瓦、连杆轴瓦、连杆铜套、活塞、活塞销、活塞环、汽缸、进排气门和喷油器更换新件。重新校验PT泵,并对进、排气门座进行了处理。柴油机组装后试 A TY320 bulldozer set Cummins NTA855-C360-type diesel engine, cylinder cavitation, cooling water into the crankcase, resulting in diesel engine unusable, it was decided to overhaul the diesel engine. The diesel engine disintegration, cleaning technical appraisal, according to the identification results, the crankshaft tile, connecting rod bearing bush, connecting rod copper sleeve, piston, piston pin, piston ring, cylinder, intake and exhaust valves and injector replacement new pieces. Recalibrate the PT pump and handle inlet and exhaust valve seats. After the diesel engine assembly test