3508B Engine for Caterpillar Built Machines Caterpillar


Cylinder Head

Usage:

854G 1JW



图 1g01429899

典型实例

(1) 定位衬垫

(2) 管塞


注意

位置 (2) 的管塞用干式排气歧管安装在发动机缸盖上。 如果管塞未安装在水道中,冷却液会发生泄漏并导致发动机损坏。 对于带干式排气歧管的发动机,确保安装了管塞。





图 2g01430598

典型实例

注: 组装前,将 6V-6640 密封胶 涂抹在杯塞的孔上。

(A) 杯塞在缸盖顶部中的深度 ... 9.0 ± 0.5 mm (0.35 ± 0.02 in)

(B) 新缸盖的高度 ... 142.00 ± 0.15 mm (5.591 ± 0.006 in)

(C) 杯塞在倒角底部下方的缸盖中深度 ... 1.0 ± 0.5 mm (0.04 ± 0.02 in)

螺栓紧固步骤

缸盖螺栓紧固步骤取决于所使用的缸盖密封垫。 请根据您缸盖密封垫的情况,参阅以下一种螺栓紧固步骤。

110-6991 缸盖密封垫 拧紧螺栓

安装 110-6991 缸盖密封垫 时,使用以下步骤。

  1. 用清洁的发动机机油涂抹螺栓的螺纹。



    图 3g02308855

  1. 按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 30 ± 5 N·m (22 ± 4 lb ft)。

  1. 按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 200 ± 15 N·m (150 ± 11 lb ft)。

  1. 再次按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 200 ± 15 N·m (150 ± 11 lb ft)。

  1. 按数字顺序将螺栓 (1) 至螺栓 (8) 再转动 180 ± 5 度。

    注: 只有在达到螺栓 (1) 至螺栓 (8) 的最终扭矩后,才拧紧螺栓 (9) 和 (10) 。

  1. 拧紧螺栓 (9) 和 (10) 至 55 ± 10 N·m (40 ± 7 lb ft)。

362-8264 缸盖密封垫 拧紧螺栓

安装 362-8264 缸盖密封垫 时,使用以下步骤。

  1. 用清洁的发动机机油涂抹螺栓的螺纹。



    图 4g02312013

  1. 按照数字顺序依次将螺栓 (1) 至螺栓 (8) 拧紧到扭矩 30 ± 5 N·m (22 ± 4 lb ft)。

  1. 按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 100 ± 15 N·m (75 ± 11 lb ft)。

  1. 按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 450 ± 15 N·m (330 ± 11 lb ft)。

  1. 按数字顺序依次将螺栓 (1) 至螺栓 (8) 转动 90 ± 5 度。

  1. 按数字顺序拧紧螺栓 (1) 至螺栓 (8) ,至 490 ± 15 N·m (360 ± 11 lb ft)。

    注: 只有在达到螺栓 (1) 至螺栓 (8) 的最终扭矩后,才拧紧螺栓 (9) 和 (10) 。

  1. 拧紧螺栓 (9) 和 (10) 至 55 ± 10 N·m (40 ± 7 lb ft)。

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