3500 Engines Caterpillar


Piston and Rings - One-Piece Piston

Usage:

3512C ED4


图 1g02848930

表 1
技术规格 - 341-3638 活塞和连杆总成和 348-6709 活塞和连杆总成 
项目  数量  零件  技术规格说明 
安装活塞环前,使用清洁的发动机机油润滑环槽。 组装活塞环后,使用清洁的发动机机油润滑环至缸套的配合面。 
229-1632 顶部活塞环  安装活塞顶环时让有 "Up-1" 标记的一侧朝向活塞顶部。
新顶部活塞环的厚度为 4.5 mm (0.18 inch)。 
在孔径大小为 170 mm (6.7 inch) 的缸套中安装活塞环时,活塞环两端之间的间隙为 0.625 ± 0.125 mm (0.0246 ± 0.0049 inch)
活塞环端部间的间隙各增加 0.03 mm (0.001 inch),缸套孔径大小增加 0.08 mm (0.003 inch)
144-5695 中间活塞环  安装中间活塞环时让有 "Up-2" 标记的一侧朝向活塞顶部。
新中间活塞环的厚度为 3.785 mm (0.1490 inch)。 
在孔径大小为 170 mm (6.7 inch) 的缸套中安装活塞环时,活塞环两端之间的间隙为 1.00 ± 0.15 mm (0.039 ± 0.006 inch)
活塞环端部间的间隙各增加 0.03 mm (0.001 inch),缸套孔径大小增加 0.08 mm (0.003 inch)
165-6668 活塞机油控制环  组装活塞环时,控油活塞环末端应和环端间隙相距 180 度。 从环端缝隙中必须能够看见活塞环的彩色部分。
新活塞上的活塞控油环槽宽度为 4.055 ± 0.015 mm (0.1596 ± 0.0006 inch)。 
新控油环的厚度为 3.980 ± 0.010 mm (0.1567 ± 0.0004 inch)
在孔径大小为 170 mm (6.7 inch) 的缸套中安装活塞环时,活塞环两端之间的间隙为 0.65 ± 0.15 mm (0.026 ± 0.006 inch)
活塞环端部间的间隙各增加 0.03 mm (0.001 inch),缸套孔径大小增加 0.08 mm (0.003 inch)
安装好所有活塞环后,旋转活塞环,使开口间隙分隔 120 度。
活塞  加工轴承上的活塞销孔直径为 70.0705 ± 0.0075 mm (2.75868 ± 0.00030 inch)。 
302-3451 活塞销  装配活塞销前,用干净的发动机机油润滑活塞销、活塞销孔和连杆销眼。
外径为 69.930 ± 0.005 mm (2.7531 ± 0.0002 inch)
长度为 101.85 ± 0.15 mm (4.010 ± 0.006 inch)。 
253-1238 销固定器  安装销固定器时使间隙朝向活塞顶部。
厚度为 2.36 ± 0.08 mm (0.093 ± 0.003 inch)
新活塞上的销固定器槽宽度为 2.75 ± 0.1 mm (0.108 ± 0.004inch)。 

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