ZONGSHEN CBS300, Руководство по обслуживанию

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项目
Item
标准值 mm
Standard Value
(mm)
维修极限值 mm
Maintenance
Limit Value (mm)
气门
Valve
气门杆外径
Outer diameter of
valve stem
进气
Intake
φ 4.972
～
φ 4.987 φ 4.96
排气
Exhaust
φ 4.96
～
φ 4.975
φ 4.94
气门导管内径
Inner diameter of
valve guide
进气
Intake
φ 5 ～ φ 5.015 φ 5.025
排气
Exhaust
φ 5
～
φ 5.015 φ 5.025
气门密封带宽度
Width of valve sealing strip
1.5 ----
汽缸头
Cylinder head
平面度
Planeness
0.04 0.05
气门座工作面宽度
Width of valve seat working surface
0.8 ----
故障排除
Troubleshooting
缸内气压低：
Low pressure in cylinder:
1
、 气门
Valve
----------
气门间隙调整不正确
Incorrect adjustment of valve
clearance
----------
气门密封不严
Insufficient sealing of valve
---------- 配气正时不对
Incorrect valve timing
----------
气门弹簧断裂
Breakage of valve spring
2 、 汽缸头
Cylinder head
----------
火花塞与汽缸头连接不紧密
Loose connection between spark
plug and cylinder head
----------
汽缸头垫损坏
Damage of cylinder head gasket
----------
汽缸头有裂纹或砂眼
Cracks and sand holes on cylinder
head
3
、 缸体、活塞、活塞环
Cylinder body, piston, piston ring
---------- 活塞环间隙过大或断裂
Excessive clearance or breakage of
piston ring
----------
活塞有裂纹或过度磨损
Cracks or excessive wear of piston
---------- 缸体内径过大或砂眼
Excessive inner diameter of cylinder
body or sand holes on it
排气有黑烟
Exhaust having black smoke
1
、 气门导管磨损
Wear of valve guide
2
、 挡油罩渗漏或损坏
Leakage or damage of oil shield
3
、 汽缸头垫渗漏
Leakage of cylinder head gasket
4
、 活塞环间隙过大
Excessive clearance of piston ring
噪音过大或异响
Excessive or abnormal noise
1 、 气门调整不正确
Incorrect adjustment of valve
2
、 气门卡住或气门弹簧断裂
Valve getting stuck or valve spring getting
broken
3
、 上摇臂过度磨损
Excessive wear of upper rocker arm
4
、 配气正时不准
Inaccurate valve timing
5
、 凸轮轴磨损
Wear of camshaft