C7 Engines for Caterpillar Built Machines Caterpillar


Piston and Rings

Usage:

525C 525

铝制活塞




图 1g01357671

短铝制活塞

短铝制活塞用于小于等于 210 马力的发动机。

注: 组装活塞杆和铝制活塞,使活塞体上的标记 "front(前端)"位于活塞杆组件上零件号的对面。 将活塞杆和活塞总成安装到发动机内,使杆组件上的零件编号面向发动机后端。 发动机的后端是指发动机飞轮端。 在将活塞杆和活塞总成插入缸体之前,先用清洁的废机油润滑活塞杆和活塞总成。

(A) 短活塞的高度 ... 93.12 ± 0.16 mm (3.666 ± 0.006 in)

润滑整个活塞体组件 (1) 的区域 (A) 后,将其装入缸体内。 采用干净的机油。

顶活塞环(2)

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。

新顶活塞环的厚度 ... 3.32 mm (0.131 in)

110 mm (4.3 in) 的油缸衬垫孔中的活塞环的两端之间的间隙 ... 0.40 ± 0.10 mm (0.016 ± 0.004 in)

缸套孔每增加 0.03 mm (0.001 in) 活塞环两端之间间隙增加的量 ... 0.09 mm (0.004 in)

中间活塞环(3)

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。

新中间活塞环的厚度 ... 2.980 ± 0.010 mm (0.1173 ± 0.0004 in)

110 mm (4.3 in) 的油缸衬垫孔中的活塞环的两端之间的间隙 ... 1.200 ± 0.125 mm (0.0472 ± 0.0049 in)

缸套孔每增加 0.03 mm (0.001 in) 活塞环两端之间间隙增加的量 ... 0.09 mm (0.004 in)

控油环(4)

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端间隙相距 180 度。 从环两端缝隙中必须能够看见弹簧的淡绿色部分。

新的控油环厚度 ... 3.985 ± 0.010 mm (0.1569 ± 0.0004 in)

110 mm (4.3 in) 的缸套孔中控油环两端之间的间隙 ... 0.45 ± 0.15 mm (0.018 ± 0.006 in)

缸套孔每增加 0.03 mm (0.001 in) 控油环两端之间间隙增加的量 ... 0.09 mm (0.004 in)

注: 活塞环安装完成之后,旋转活塞环使各端隙之间成 120 度。

活塞销(5)

注: 组装前,为避免损坏,确保活塞销上涂满干净的机油。

外径 ... 39.993 ± 0.005 mm (1.5745 ± 0.0002 in)

内径 ... 23.0 ± 0.5 mm (0.91 ± 0.02 in)

长度 ... 89.95 ± 0.15 mm (3.541 ± 0.006 in)

注: 关于活塞、活塞销和挡圈的更多信息,请参阅再使用和修补指南。

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