PY160型平地机在公路建设中发挥了重要的作用。但在使用中主离合器往往出现一些问题，譬如由于调整不当造成摩擦盘损坏的现象就经常发生。最严重的二三天就损坏一片，而调整得当的最长可使用六七年。该摩擦盘是在钢片的芯板两面烧结铜基粉末冶金材料为成的，其造价一般都在千元 PY160 motor grader played an important role in highway construction. But in the use of the main clutch there are often some problems, such as improper adjustment caused by friction disc damage often occur. The most serious two or three days to damage a piece, and adjust the longest available six or seven years. The friction plate is sintered on both sides of the core of the steel sheet copper-based powder metallurgy materials into, and its cost are generally in the thousand