WD615欧Ⅱ系列柴油机维修保养手册
-10-
Maintenance Manual for WD615 Series EuroⅡDiesel Engine
9.3 功率不足
Insufficient output
1.进气堵塞(空滤器堵塞)
Air intake clogged (air cleaner choked)
检查空滤器，进气管、清理或更换滤芯
Check the air cleaner and air intake pipe,clean or replace filter
element
2.排气背压过高
Exhaust back pressure is too high
检查气门定时，排气管道有否堵塞，调整及修理之
Check the valve-timing and exhaust pipe, adjust and repair
3.增压系统压力不足
Insufficient pressure in supercharging system
检查，排除管路连接处泄漏
Check and block up the leakage of pipeline
4.增压器工作失常
Faults in turbocharger
更换总成
Replace the turbocharger assembly
4.1压气机，涡轮流道污塞
Compressor and turbine streets choked up
清洗或更换
Clean or replace
4.2浮动轴承失效
Floating bearing cease to be in effect
更换
Replace
4.3涡轮，压力机背面间隙处积炭，油泥
Carbon deposit or greasy filth in clearance of turbine and
compressor back
清洗
Clean
5.中冷器损坏，漏气
Intercooler damaged
更换或修补
Replace or repair
6.燃油管路漏油或堵塞
Leakage or choke of fuel line
检查油管及接头密封性，滤清器的污染度及燃油管道修复
或清除污塞，更换滤芯
Check the sealing of fuel pipe and connector, fuel filter and fuel
line, repair, clean or replace the filter element
7.燃油质量差
Poor quality of fuel
清洗油箱，滤清零件及油管，更换燃油
Clean the fuel tank, filter parts and fuel pipe. Renew the fuel
8.喷油泵或调速器磨损过大
Excessive wear for injection pump or gover-
nor
修理或更换
Repair or replace
9.喷油泵冒烟限制器膜片破损
Smoke -limiter diaphragm of injection pump damaged
更换修理
Repair or replace
10.冒烟限制器空气管损坏漏气
Air pipe of smoke-limiter damaged
更换Replace
11.喷油嘴物化不良
Poor atomizing
检查喷油压力，喷油嘴积炭，调整及修理之
Check the injecting pressure, clean away the carbon deposit in
nozzle, adjust and repair in-jector
12.配气或供油定时不对
Incorrect timing of valve gear or fuel deliv-
ery
检查并调整之
Check and adjust it
13.调速器高速调整过低
High-speed of governor is adjusted too low
检查调速特性，调整之
Check the speed-governing and adjust
14.油底壳机油面过高
Oil level in the oil sump is too high
检查油尺，放出多余机油
Check the oil-dipstick, and drain off unnec- essary oil
15.气缸垫漏气
Leakage in cylinder gaskets
热车时检查压缩压力，更换损坏气缸垫
Check the compressed pressure at hot state, replace cylinder
gaskets
16.活塞环磨损断裂，轴瓦间隙过大
Piston ring broken, the clearance of main bearing is too large
更换磨损零件，或大修发动机
Replace worn parts or overhaul the engine
17.缸套或活塞磨损或拉缸
Cylinder liner or piston worn, or piston scuffing
大修发动机
Overhaul the engine
