3406E Marine Engine Caterpillar


Cylinder Block

Usage:

3406E 9WR



图 1g00284985

右视图

(1) 定位销

安装前,将 7M-7456 固定胶 涂抹到定位销上。
定位销比缸体顶部表面高出以下距离。 ... 18.5 ± 0.5 mm (0.73 ± 0.02 in)

(2) 隔板

隔板的厚度 ... 8.585 ± 0.025 mm (0.3380 ± 0.0010 in)
隔板与缸体之间的密封垫的厚度 ... 0.238 ± 0.032 mm (0.0094 ± 0.0013 in)
缸套伸出隔板的长度 ... 0.025 至 0.152 mm (0.0010 至 0.0060 in)

(3) 定位销

定位销比缸体顶部表面高出以下距离。 ... 16.0 ± 0.5 mm (0.63 ± 0.02 in)

(4) 定位销

安装前,将 7M-7456 固定胶 涂抹到定位销上。
定位销比缸体顶部表面高出以下距离。 ... 20.0 ± 0.5 mm (0.79 ± 0.02 in)

(5) 螺塞

将螺塞拧紧至以下扭矩。 ... 70 ± 10 N·m (52 ± 7 lb ft)

(6) 定位销

定位销比缸体端部长出以下距离。 ... 19.1 ± 0.5 mm (0.75 ± 0.02 in)



图 2g00284986

A-A 视图




图 3g00562849

B-B 视图

(7) 螺塞的安装深度 ... 2.0 ± 2.0 mm (0.08 ± 0.08 in)




图 4g00284988

前视图

(8) 曲轴轴承孔中心线至缸体顶部的尺寸

新机 ... 425.45 ± 0.15 mm (16.750 ± 0.006 in)
最低 ... 425.02 mm (16.733 in)

注: 缸体顶部接触面的总体平整度必须在 0.10 mm (0.004 in) 以内。 对于表面上任意 177.5 mm (6.99 in) 的部分,平整度也必须在 0.05 mm (0.002 in) 以内。

(9) 缸体上的主轴承孔

(10) 主轴承盖

主轴承盖宽度 ... 215.900 ± 0.025 mm (8.5000 ± 0.0010 in)
缸盖上的主轴承盖宽度 ... 215.900 ± 0.013 mm (8.5000 ± 0.0005 in)

(11) 主轴承盖螺栓




图 5g00562863

主轴承盖螺栓所用的扭矩转动拧紧方法

按照以下步骤拧紧主轴承盖螺栓:

  1. 将清洁的发动机机油涂抹在螺栓的螺纹上。

  1. 首先拧紧轴承盖的轴承凸舌侧 (1) 螺栓。

    螺栓扭矩 ... 260 ± 14 N·m (190 ± 10 lb ft)

  1. 拧紧对面侧 (2) 螺栓。

    螺栓扭矩 ... 260 ± 14 N·m (190 ± 10 lb ft)

  1. 在每一个螺栓和盖上作标记。

  1. 将对面侧 (3) 螺栓从标记处拧紧至角度 (A) 。

    角度 (A) ... 120 ± 5 度(2 层丝)

  1. 将轴承盖的轴承凸舌侧 (4) 螺栓从标记处拧紧至以下值。

    角度 (A) ... 120 ± 5 度(2 层丝)

(12) 从曲轴轴承孔中心线到缸体油底壳导轨底部的新装尺寸 ... 165.10 ± 0.10 mm (6.500 ± 0.004 in)




图 6g00285129

右视图

(13) 管塞

装入缸体中之前,将 5P-3413 管密封胶 涂抹在管塞的螺纹上。

(14) 活塞冷却喷嘴

为了防止在操作中损坏活塞冷却喷嘴,必须将活塞冷却喷嘴拆除。
拧紧活塞冷却喷嘴的固定螺栓至以下扭矩。 ... 40 ± 8 N·m (30 ± 6 lb ft)
活塞、活塞冷却喷嘴和曲轴之间的最小允许间隙 ... 0.63 mm (0.025 in)

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