– 99 –
2
Compression is insufficient.
Leaking valves.
9
Bad valve and excessive wear
of rings, pistons and liners
cause insufficient compres-
sion. Replace with new parts.
9
Grind valves.
2
Fuel is insufficient.
9
Check fuel system.
2
Overheating of moving parts.
9
Check lubricating oil system.
9
Check to see if lubricating oil
filter is working properly.
9
Check the filter element for
impurities which would cause
poor lubrication. Change ele-
ment if necessary.
9
Check the clearance of bear-
ings are within factory specs.
9
Check injection timing.
9
Adjust timing 0.366 rad (21°)
before top dead center.
2
Valve clearance is incorrect.
9
Adjust to proper valve clear-
ance of 0.145–0.185 mm
(0.0057–0.0072 in) with en-
gine cold.
2
Air filter is dirty.
9
Clean the element every 100
hours of operation.
2
Fuel injection pressure is incor-
rect.
9
Adjust to proper pressure.
13.7 Mpa (140 kgf/cm
2
; 1991
psi)
2
Injection pump wear.
9
Do not use poor quality fuel
as it will cause premature
wear of the injection pump.
Only use No.2-D diesel fuel.
9
Check the fuel injection pump
element and delivery valve as-
sembly and replace as neces-
sary.
3
压力不足,阀门漏液。
9
阀门不良,环、活塞和衬垫的过
度磨损都会造成压力不足。请更
换这些部件。
9
研磨阀门
3
燃油不足
9
检查燃油系统
3
运动部件过热
9
检查润滑油系统
9
查看润滑油过滤器是否工作正
常。
9
检查过滤器元件上是否附有会使
润滑效果不良的不纯物,需要时
更换元件。
9
检查轴承间隙是否符合厂家所定
标准。
9
检查加油时机。
9
调节加油时机至活塞头到达中心
之前的 0.366rad(21°)时。
3
阀门间隙不正确
9
发动机冷却后,将阀门间隙调节
至 0.145-0.185mm(0.0057-
0.0072 in)之间。
3
空气过滤器变脏
9
每隔 1 0 0 小时运转时间便应清
洁空气过滤器。
3
注油压力不正确
9
调 节 至 正 常 压 力 1 . 3 7 M p a
(140kgf/cm
2
, 1991psi)
3
注油泵磨损
9
请不要使用低质燃油,否则会过
快磨损注油泵。应仅使用 No.2-
D 柴油。
9
检查加油泵部件及输出阀门组
件,需要时进行更换。
9C1-9-N2̲097-106
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