| 摘要 |
a cylinder block(1) having cam shaft assembling holes(21) and crank shaft assembling holes(11) under the block; a cam shaft(2); and lower, left, right cylinders(3)(4)(5). The assembling process comprises : the lower cylinder(3) rising, inserting guide pins(7) on the top of the cylinder into guide holes(21) in the inner part of the cylinder block(1), and fixing the cylinderblock(1); the left cylinder(4) going through the cam shaft assembling holes(21) and inserting an alignment pin(8) into a center hole of the cam shaft(2) put on a supporter(6); the right cylinder(5) moving to the left to insert another alignment pin(9) into the right side center hole of the cam shaft(2); and the right cylinder(5) continuing to push the cam shaft(2) to the left and automatically assembling it with the cylinder block(1).
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