Yuchai YC6A Series, Руководство по эксплуатации и техническому обслуживанию

Страница: 43 / 99

43
crankshaft to the position were the first piston is on the compression TDC, then adjust the No.
1, 2, 3, 6, 7 and 10 valve. Rotate again the crankshaft for 360° to adjust the No. 4, 5, 8, 9, 11
and 12 valves. The valve adjustment can be achieved by adjusting the valve adjusting bolts,
i.e. to loose the tightening nut of the adjustment bolt and screw the adjustment bolt out and in,
then check the clearance between the rocker arm and the end of the valve stem with a feeler
gauge, fasten the tightening nut when the checking result is accordance with the requirement,
(Fig 2-4)
3.2.4.1
凸轮轴组
Camshaft group
凸轮轴有 7 个支承轴颈和 12 个配气凸轮。凸轮轴的第二、第五道凸轮轴衬套上分别有输
送机油至两个气缸盖的油孔，装配时应注意保持油道畅通。
Camshaft consists of 7 supporting axis necks and 12 air distributing cams. On the
second and fifth camshafts neck bush, there are oil holes that deliver engine oil to two
cylinder heads. When assembling, please pay attention to keep the oil path flowing.
凸轮轴的轴向间隙靠止推片来控制，装配时要保证轴向间隙为 0.10 ～ 0.20mm （图 2—5 ）
。间隙过小将会使凸轮轴正时齿轮与止推片卡住或咬死， 图
2—5
图
2—4
The axial clearance of the camshaft is controlled by the thrust plate, ensure the axis
clearance of 0.10
～
0.20mm (Fig 2-5) when assembling. Too small clearance will be locked