斯堪尼亚汽车的转向助力液压油泵,是采用结构紧凑,机件较精密,单位体积排量较大的转子泵。黑龙江省东方红林业局汽运处,在几年运转使用中发现,内外转子的齿廓曲面磨损渐大,破坏了所要求的配合间隙,使油泵形成了高压,汽车不能有效地实现动力转向;坏损的较为精密的机件(如齿廓曲面,尤其是外转子的内齿廊曲面)难以修复加工。因此,该汽运处曾一度出现过停车。 Scania car steering hydraulic pump, is the use of compact, more precise parts, larger displacement per unit volume of the rotor pump. Dongfanghong Forestry Bureau of Heilongjiang Province, the Department of Transportation, found in a few years in operation, both inside and outside the rotor tooth profile surface wear and tear gradually increased, undermining the required with the gap, the pump formed a high pressure, the car can not effectively achieve power steering; Bad and more delicate parts (such as tooth profile surface, especially the outer rotor internal tooth gallery surface) is difficult to repair the processing. As a result, there was once a stoppage at the transportation department.