C11 and C13 Engines Caterpillar


Piston and Rings

Usage:

730C2 2L7





图 1g02117714



图 2g02117793

(1) 活塞顶组件

(2) 连杆

注: 将连杆和活塞总成安装至发动机时,使连杆组件的锻造零件号朝向发动机后侧。 发动机的后端是指发动机飞轮端。 在将连杆和活塞总成插入缸体之前,先用清洁的发动机机油润滑连杆和活塞总成。

顶环 (3)

安装活塞环,并且标有 "UP-1" 字样的一侧朝向活塞顶部。 色条朝向活塞环开口间隙的右侧。

将新顶活塞环安装到新缸套孔中时,活塞环的开口间隙数值如下。 ... 0.40 ± 0.10 mm (0.016 ± 0.004 in)

新顶活塞环的厚度 ... 3.5 mm (0.14 in)

中间环 (4)

安装活塞环,并且标有 "UP-2" 字样的一侧朝向活塞顶部。 色条朝向活塞环开口间隙的右侧。

将新中间活塞环安装到新缸套孔中时,活塞环的开口间隙数值如下。 ... 1.20 ± 0.12 mm (0.047 ± 0.005 in)

新活塞中用于中间活塞环槽的宽度 ... 3.060 ± 0.010 mm (0.1205 ± 0.0004 in)

新中间活塞环的厚度 ... 3.000 ± 0.010 mm (0.1181 ± 0.0004 in)

控油环 (5)

控油环带有一个同时安装的弹簧。 控油环安装完毕后弹簧的开口应与控油环开口间隙相距 180 度。 有色部分可以位于环开口间隙的左或右侧。

将新控油环安装到新缸套孔中时,控油环的开口间隙数值如下。 ... 0.45 ± 0.15 mm (0.018 ± 0.006 in)

新活塞上的活塞机油控制环槽宽 ... 4.030 ± 0.010 mm (0.1587 ± 0.0004 in)

新活塞控油环的厚度 ... 3.975 ± 0.015 mm (0.1565 ± 0.0006 in)

活塞环安装完成之后,旋转活塞环使各端隙之间成 120 度。

活塞裙(6)

在将活塞装入缸体之前润滑整个活塞的 (A) 区域。 采用干净的机油。

活塞销(7)

活塞销外径 ... 46.000 ± 0.005 mm (1.8110 ± 0.0002 in)

活塞销长度 ... 91.50 ± 0.15 mm (3.602 ± 0.006 in)

组装前,用干净的发动机机油彻底润滑活塞销。

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