3406C Engines for Caterpillar Built Machines Caterpillar


Piston and Rings - Two-Piece Articulated Piston

Usage:

627F 1DL



图 1g00514913

请参阅再用零件指南, SEBF8049, "活塞"。 请参阅再用零件指南SEBF, 8068, "缸套"。 请参阅再用零件指南, SEBF8051, "活塞销和挡环"。

1U-6431 活塞环槽量规 是测量梯形设计活塞的活塞环槽所必需的工具。 请参阅量规附带的说明,了解量规的正确使用方法。

(1) 活塞冠组件

(2) 活塞裙

(3) 顶活塞环

安装环时,标有 "UP-1" 或 "0" 的一侧应朝向活塞顶部。
当活塞环安装到孔径为以下值的缸套中时,应检查活塞环的端部间隙。 ... 137.16 mm (5.4000 in)
有两类顶环可用。 两环使用颜色代码区分。
白色条纹环端部之间的间隙为以下尺寸。 ... 0.55 ± 0.15 mm (.022 ± .006 in)
黄条纹环端部之间的间隙为以下尺寸。 ... 0.724 ± 0.190 mm (.0285 ± .0075 in)

(4) 中间环

安装中间环时,标有 "UP-2" 的一侧朝向活塞顶部。
当环安装到孔径为 137.16 mm (5.4000 in) 的缸套中时,活塞环的端部之间应具有以下间隙。 ... 1.080 ± 0.190 mm (.0425 ± .0075 in)

(5) 油控环

装配时,控油环的弹簧端应与环端部开口成 180 度。 从环两端缝隙中必须能够看见弹簧的白色部分。
新油控环在活塞中槽的宽度值如下。 ... 3.210 ± 0.010 mm (.1264 ± .0004 in)
新的控油环厚度 ... 3.137 ± 0.013 mm (.1235 ± .0005 in)
槽与新控油环的间隙 ... 0.073 ± 0.023 mm (.0029 ± .0009 in)
最大允许间隙 (磨损量) ... 0.15 mm (.006 in)
当油控环安装到孔径为 137.16 mm (5.4000 in) 的缸套中时,油控环的端部之间应具有以下间隙。 ... 0.572 ± 0.190 mm (.0225 ± .0075 in)

缸套孔尺寸每增加 0.03 mm (0.001 in) 时,每三个活塞环端部之间的间隙按以下值递增。 ... 0.08 mm (.003 in)

注: 定位活塞环时,每个环之间的间隙约为 120 度。

(6) 活塞销孔

用于安装活塞销的活塞冠轴承孔 ... 55.047 ± 0.008 mm (2.1672 ± .0003 in)
活塞裙上的销孔直径 ... 55.013 ± 0.004 mm (2.1659 ± .0002 in)
新活塞销直径 ... 55.000 ± 0.005 mm (2.1654 ± .0002 in)

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