| 摘要 |
PURPOSE:To decrease a cost of manufacture, by stopping a cam ring to a pair of knock pins, provided in a rear cover, and mounting the cam ring to the rear cover. CONSTITUTION:A pair of knock pin holes 33, which are drilled in the point symmetry with a bearing hole 32 serving as the center in a predetermined position of a rear cover 30, force a knock pin 34 to be fitted. If the knock pin 34 is fitted to notched parts 35 of a cam ring 26, it is mounted to the rear cover 30 so that the center of the bearing hole 32 agrees with the center of a cam surface 26a. Accordingly, the center of the cam surface 26a agrees with the center of a rotor 27, and a cost of manufacture can be decreased by performing accurate cutting in which the stop part of the cam ring is only required. |
