3406C Engines for Caterpillar Built Machines Caterpillar


Piston and Rings - One-Piece Piston

Usage:

627F 1DL



图 1g00287964

请参阅再用零件指南, SEBF8049, "活塞"。 请参阅再用零件, SEBF8068, "缸套"。 请参阅再用零件, SEBF8051, "活塞销和挡圈"。

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) 顶环

安装顶环时,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 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。 ... 0.724 ± 0.190 mm (.0285 ± .0075 in)

(2) 中间环

安装中间环时,标有 "UP-2" 的一侧应朝向活塞顶部。
当活塞环安装到孔径为 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)

(3) 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。

(4) 活塞销孔

活塞销孔 ... 50.814 ± 0.004 mm (2.0005 ± .0002 in)
新活塞销直径 ... 50.795 ± 0.005 mm (1.9998 ± .0002 in)
活塞销与活塞孔之间的间隙 ... 0.019 ± 0.009 mm (.0007 ± .0004 in)

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