Yuchai YC6A Series, Operation & Maintenance Manual

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喷油器安装在气缸盖上，应保证喷油咀突出气缸盖底面的高度（即喷油器突出高度），
YC6A
系列按 4.2±0.1mm 控制， YC6B 、 YC6J 系列按 2.4±0.1mm 控制。拆装喷油器时应注意这个高
度不能随意增减，如不符合可通过喷油器前端的铜垫来调整（图
2—23
），否则会影响柴油机的
性能。
The fuel injector is installed on the cylinder cover to ensure the project height from the
cylinder bottom (i. e. the project height of the fuel injector); the height of YC6A series engine
shall be controlled at 4.2±0.1mm, and 2.4±0.1mm for YC6B and YC6J series. The height is
not allowed to change when disassembling the fuel injector; if the height can’t meet the
requirement, it could be adjusted through copper gasket at front of the injector (fig 2-23),
otherwise, the performance of the engine will be affected.