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226B
系列柴油机维修保养手册
Maintenance Manual for
226B
series Diesel Engine
R
9.8柴油机运转时有不正常响声
Unusual sounds
序号
No
可 能 的 原 因
Cause
排 除 方 法
Remedy
1
喷油时间过早，气缸内发出有节奏的清脆
的金属敲击声Premature fuel injection and
rhythmic tinkling knock in cylinders
检查调整喷油时间Check and adjust the
fuel injecting time.
2
供油时间过晚，气缸内发出低沉的不太清
晰的敲击声Delayed fuel supply and hollow
rapping sound in cylinders
检查调整喷油时间Check and adjust the
fuel injecting time.
3
气门与摇臂间隙过大，气门机构中有金
属敲击声Excess clearance between valves
and valve arms and metallic beating sound in
valve structures
检查调整气门间隙Check and adjust the
valve clearance
4
活塞与气缸间隙过大Excess clearance
between pistons and cylinders
检查配缸间隙，更换活塞或缸套Check
the cylinder liners fit clearance. Change the
pistons and cylinders.
5
活塞销与连杆小头轴承间隙过大，有响
亮的金属敲击声，低速和高速时，尤其
显著。Excess clearance between the piston
pin and small rod connecting bearing, pealing
with a metallic beating sound, especially at
high or low speed
更 换 连 杆 衬 套 保 证 规 定 间 隙 C h a n g e
the connecting rod bushing to satisfy the
clearance requirement.
6
连 杆 轴 承 间 隙 大 ， 有 钝 哑 的 撞 击 声 B i g
clearance between connecting rods and
muffled raucous beating sound
更换轴承Change the bearings.
7
主轴承间隙过大，与连杆轴承敲
击声相似Excess clearance of main bearing,
the sound resembling the connecting rod
beating sound
更换主轴承Change the main bearings.
8
活塞碰气门，低速时在气缸盖附近可听到
金属敲击声Piston bumps the valve, tinkling
near the cylinder head at low speed
检查配气定时Check the valve timing.
9
齿轮间隙过大，突然降低转速时在齿轮室
处可听到撞击声Excess gear clearance and
bumping sound at sudden deceleration
检查并调整齿轮间隙，必要时更换齿轮
Check and adjust the gear clearance. Change
the gears if necessary.
