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40
第二次
:140
~
180N·m Second time, 140
~
180N·m
第三次
:210
~
250N·m Third time, 210
~
250N·m
3.2.2
气缸垫
Cylinder gasket
气缸垫片置于气缸盖底部与气缸体顶部之间,在气缸盖螺母(螺栓)拧紧后,
对循环冷却水、机油、燃烧室的高压气体起密封作用,为钢架石棉板制成,表面涂有防粘层
涂料,拆气缸盖后重装,应更换气缸垫片。凡新机运行完磨合期后,应复紧缸盖螺栓到规
定的力矩,以防漏水、漏油、冲缸垫。特别注意:全钢质缸垫一经拆卸,不能重复使用!
Cylinder gasket is installed between the bottom of cylinder head and the top of cylinder
body. After tightening cylinder head cover nut (bolt), it could seal circulating cooling water, oil
and high pressure gas in combustion chamber. It is made from steel fame asbestos plate and
the surface is print with anti-seize coating. When reassembling cylinder head, cylinder gasket
should be replaced. In common sense, after run-in period of new engine, retighten cylinder
head cover to regulate torque in order to prevent water leakage, oil leakage and pushing
cylinder gasket.
Special notice: Once the steel cylinder head gasket is removed, it can
not be used any more!
3.2.3
气门
Valve
气门
气缸盖每缸设有进、排气门各一个。进排气道分布于两侧。气缸盖的进排气口装有
高强度耐热钢制成的气门座圈,磨损后可以更换(标准尺寸或加大尺寸)。进气、排气门锥角
及座角均为
90°
。气门下沉量应严格控制,技术要求为
1±0.2mm
(图
2—2
)。
Valve
One intake valve and one exhaust valve are designed on each cylinder head. The intake and
exhaust passages locate on the two sides. The valve seat made of high intensity
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...