The contact face is very dirty
biglow
2011-01-25 11:33:53
( reads)
You need to clean it for sure. It seems use a drill press (not hand drill) with polishing tool will do the job. Hand filing is not recommended.
triangle
2011-01-25 11:44:09谢谢首长指示！我在零件店看到一种小号的三爪磨刀，沙面也就一寸左右可否？