Yuchai YC6A Series, Operation & Maintenance Manual

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74
吸 油 口 密 封 不 良
Poor
sealing of the oil suction.
检查密封铜垫变形情况，去除脏物、毛剌或更
换
Check the deformation of the copper
sealing gasket, remove dirt and burr, or
replace the gasket.
骨架密封圈损坏
Framed
sealing ring is damaged.
更换骨架密封圈
Replace the framed sealing
ring.
漏油
Oil leakage
出 油 口 密 封 不 良
Poor
sealing of the oil suction.
更换该处密封件
Replace the sealing part
流量阀大螺帽处密封不
良
Poor sealing of the
flow valve nut.
更换该处
“O”
型圈
Replace the O-ring.
后盖密封圈损坏
Sealing
ring of the rear cover is
damaged.
专业厂家维修
Repair by professionals
转向不助力或压力不
足
No boosterr du
ring
steering o
r
inef
ficient
流量阀卡死
Flow valve is
blocked.
用金相纸抛光阀体表面，清洗阀孔（参照阀卡
检 修 安 装 示 意 图 ）
Polish the valve core
surfaces with metallographic paper, clean the
valve bore (refer to the repair & assembly
chart of the flow valve)
内 部 零 件 失 效 所 致
Interior parts are faulty.
专业厂家维修
Repair by professionals.
4 发动机的使用和维护保养
Operation and maintenance of engine
4.1 发动机的使用
Operation of engine
4.1.1
起动前
Before starting
 检查油底壳润滑油油面，确保润滑油足够，保证润滑，若不够，则应添加到润滑油标尺规
定的位置
;
 Check the oil surface of lubricant in oil pan; making sure lubricant is enough, if it is not
enough, lubricant should be added to the regulated position of scale.

检查水箱中的冷却液，保证正常冷却
;