C175-16 Locomotive Engine Caterpillar


Piston and Rings

Usage:

C175-16 3A9


图 1g03325320

表 1
307-4407 活塞和 293-5430 活塞的技术规格 
项目  数量  零件  技术规格说明 
安装活塞和连杆组件前,向活塞裙、活塞间隙和活塞环上涂覆清洁的发动机机油。 
294-0309 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。 
新活塞中用于活塞顶环的槽宽为 3.60 ± 0.10 mm (0.142 ± 0.004 in)
新活塞顶环的厚度为 3.465 至 3.490 mm (0.1364 至 0.1374 in)
当新活塞顶环安装在缸套(缸孔内径为 175 mm (6.9 in))中时,活塞环端隙为 0.625 ± 0.125 mm (0.0246 ± 0.0049 in)
286-8928 活塞环  安装活塞中间环时让有 "Up-2" 标记的一侧朝向活塞顶部。 
新活塞中用于活塞中间环的槽宽为 3.110 ± 0.010 mm (0.1224 ± 0.0004 in)
新活塞中间环的厚度为 2.97 至 2.99 mm (0.117 至 0.118 in)
当新活塞中间环安装在缸套(缸孔内径为 175 mm (6.9 in))中时,活塞环端隙为 1.000 ± 0.125 mm (0.0394 ± 0.0049 in)
254-2054 活塞环  将活塞控油环的端部定在与其它活塞环端部切口间隔 180 度的位置。 
新活塞中用于活塞控油环的槽宽为 4.060 ± 0.010 mm (0.1598 ± 0.0004 in)
新活塞控油环的厚度为 3.97 至 3.99 mm (0.156 至 0.157 in)
当新活塞控油环安装在缸套(缸孔内径为 175 mm (6.9 in))中时,活塞环端隙为 0.5 至 0.8 mm (0.02 至 0.03 in)
注释:活塞环安装完成之后,旋转活塞环使各端隙之间成 120 度。
239-6051 活塞销  注释:将活塞销组装到活塞中之前,先用清洁的发动机机油涂抹活塞销。 
外径为 75.000 ± 0.005 mm (2.9528 ± 0.0002 in)
内径为 31.0 ± 0.3 mm (1.22 ± 0.01 in)
长度为 102.00 ± 0.25 mm (4.016 ± 0.010 in)
活塞中用于活塞销的内径为 75.121 ± 0.008 mm (2.9575 ± 0.0003 in)


图 2g03325322

表 2
项目  数量  零件  技术规格说明 
253-1238 销固定器  安装销固定器,使其切口朝向区域 (6)。 参考图 2。 
销固定器的厚度为 2.36 ± 0.08 mm (0.093 ± 0.003 in)
新活塞中用于销固定器的槽宽为 2.65 至 2.85 mm (0.104 至 0.112 in)
请参阅表 3 中用于维修活塞的工具的零件号。

表 3
维修工具 
零件 1  说明 
271-0504  活塞环扩张器 
255-8897  活塞环压缩器 
1P-1861  挡圈钳 

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