3512B and 3516B Engines Caterpillar


Piston and Rings - Two-Piece Piston

Usage:

3512B 2EZ


图 1g02572956

表 1
技术规格 - 283-0246 活塞和连杆总成、 312-8841 活塞和连杆总成和 310-6962 活塞和连杆总成 
项目  数量  零件  技术规格说明 
活塞冠组件  活塞冠组件衬套上的新活塞销孔径为 70.0525 ± 0.0075 mm (2.75796 ± 0.00030 inch)
垂直方向测量衬套上的活塞销孔孔径,每个衬套测量两个位置。 
155-5271 活塞裙  活塞裙上的新活塞销孔径为 69.988 ± 0.005 mm (2.7554 ± 0.0002 inch)
垂直方向测量活塞销孔孔径。 
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。
新活塞上的顶部活塞环槽宽为 4.219 mm (0.1661 inch)。 
新顶部活塞环的厚度为 4.5 mm (0.18 inch)
当顶部活塞环安装到孔径大小为 170 mm (6.7 inch) 的缸套上时,活塞环两端的间隙为 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。
新活塞上的中间活塞环槽宽度为 3.514 mm (0.1384 inch)。 
新中间活塞环的厚度为 3.785 mm (0.1490 inch)
当中间活塞环安装到孔径大小为 170 mm (6.7 inch) 的缸套上时,活塞环两端的间隙为 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  安装控油环后,控油环末端应和环开口间隙相差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)
油环槽与新活塞控油环的间隙为 0.050 to 0.100 mm (0.0020 to 0.0039 inch)
当活塞控油环安装到孔径大小为 170 mm (6.7 inch) 的缸套上时,活塞环两端的间隙为 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。 
138-8508 活塞销  组装前,用清洁的发动机油润滑活塞销、活塞销孔、连杆孔和连杆销轴承。 
垂直和水平方向测量活塞销每一端的直径。
外径为 69.962 ± 0.005 mm (2.7544 ± 0.0002 inch)
长度为 137.55 ± 0.15 mm (5.415 ± 0.006 inch)
8N-7296 销固定器  安装销固定器时使间隙朝向活塞顶部。
厚度为 2.40 ± 0.08 mm (0.094 ± 0.003 inch)
新活塞上的销固定器槽宽度为 2.75 mm (0.108 inch)。 

Caterpillar Information System:

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