91
5.3 发动机运转时有不正常的杂声
Abnormal Noise during Running of Engine
故
障
原
因
Cause
排
除
方
法
Solution
①
气缸内有异响
There is abnormal sound in the
cylinder
检查装配正时是否正确
Check whether the timing is correct or not.
检查并调整配气定时。
Check and adjust the air distribution timing.
②
连杆轴瓦、主轴瓦磨损过大,在
曲轴箱处可听到撞击声
Connecting rod bearing shell and
main bearing shell are worn too
much; the clash can be heard at
the position of crankcase.
拆检轴瓦,必要时更换,并保持规定的合理间隙。
Disassemble and check the bearing shell, and
replace them when necessary; keep the reasonable
clearance as specified.
③
减振器损坏,不起减振作用
Shock absorber is damaged and
without function
检查连接螺栓及损坏情况,必要时更换。
Check the connection bolt for itself & its damage, and
replace it when necessary.
④
传动齿轮磨损,间隙过大。在正
时齿轮室盖处可听到撞击声
Driving gear is worn and the
clearance is too big. Clash
can be heard at the timing
gear chamber cover.
检查齿侧间隙,视磨损情况更换齿轮。
Check gear flank clearance; and replace the gear
according to its wear.
⑤
活塞与气缸间隙过大,运转时气
缸壁处的撞击声
The clearance between piston
and cylinder is too big; clash
is heard from the cylinder wall
during running.
更换活塞,视磨损情况加修理用缸套,注意保持配缸间
隙。
Replace piston; add repair it by using cylinder liner
according to their wear; pay due attention to the
clearance between cylinders.
⑥
增压器轴承损坏,转动件与壳体
相碰
Turbocharger bearing is
更换增压器总成。
Replace the turbocharger assembly.
Summary of Contents for YC6A Series
Page 11: ...4 YC6J...
Page 12: ...Fig 4 Assembly Layout for YC6J Diesel Engine may differ from the practical configuration...
Page 13: ...13 YC6A A8700 YC6A series construction engine A8700 external characteristic curve...
Page 15: ...15 YC6B B7700 YC6B series construction Turbocharged engine B7700 external characteristic curve...
Page 16: ...16 YC6J J8000 YC6J series construction engine J8000 external characteristic curve...
Page 64: ...64 2 31 Thethermostator is of wax type and installed in the water outlet of the pipe It is not...
Page 98: ...98 the engine to check repair and replace damaged parts...