3500B Engines and 776D, 777D, 784C, 785C, 789C, 793C and 793D Off-Highway Truck/Tractors Caterpillar


Valve Mechanism

Usage:

785C 1HW


图 1g03322742

表 1
技术规格 - 224-9869 气门机构总成 332-9690 气门机构总成 281-6160 气门机构总成 286-5723 气门机构总成 308-5356 气门机构总成 357-9219 气门机构总成 
项目  数量  零件  技术规格说明 
3J-9196 安全螺母  拧紧安全螺母至扭矩为 70 ± 15 N·m (52 ± 11 lb ft)。 
230-2633 轴组件  摇臂轴组件的直径为 45.000 ± 0.013 mm (1.7716 ± 0.0005 inch) 
气门间隙的尺寸:
进气门 0.50 mm (0.020 inch)
排气门 1.00 mm (0.040 inch) 
230-2620 衬套  安装后衬套上的摇臂轴组件孔径为 45.077 ± 0.015 mm (1.7747 ± 0.0006 inch)。 
263-6672 挺杆体  气门挺杆组件的直径为 29.900 ± 0.010 mm (1.1772 ± 0.0004 inch)
缸盖上的气门挺杆组件孔径为 30.000 ± 0.025 mm (1.1811 ± 0.0010 inch)。 

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