C11 and C13 Engines Caterpillar


Piston and Rings

Usage:

730C2 2L7

两件式铰接活塞




图 1g01525270



图 2g01093113

(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。

顶环和中间环

(3) 顶环带有标记 "UP-1"。

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。

活塞环开口间隙 ... 0.40 ± 0.10 mm (0.016 ± 0.004 in)

新活塞中用于顶环槽的最小深度 ... 4.947 mm (0.1948 in)

新顶活塞环的厚度 ... 3.453 mm (0.1359 in)

(4) 中间环带有标记 "UP-2"。

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。

活塞环开口间隙 ... 1.50 ± 0.10 mm (0.059 ± 0.004 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)

新活塞中用于中间环槽的最小深度 ... 4.948 mm (0.1948 in)

新中间活塞环的厚度 ... 2.980 ± 0.010 mm (0.1173 ± 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。 有色部分可以位于活塞环开口间隙的左或右侧。

活塞环开口间隙 ... 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)

新活塞上用于控油环槽的最小深度 ... 4.725 mm (0.1860 in)

新活塞控油环的厚度 ... 3.980 ± 0.010 mm (0.1567 ± 0.0004 in)

活塞环安装完成之后,旋转活塞环使各端隙之间成 120 度。

(6) 活塞裙

在将活塞装至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

活塞销直径 ... 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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