776D, 777D and 777D HAA Off-Highway Trucks Machine Systems Caterpillar


Air/Hydraulic Cylinder (Front Caliper) - Assemble

Usage:

776D AFS

组装步骤

表 1
所需工具 
工具  零件号  零件说明  数量 
1P-1856  挡圈钳 

  1. 检查所有 O 形密封圈和部件有无磨损或损坏。 如有必要,请更换部件。

  2. 利用正要密封的润滑剂稍微润滑所有 O 形密封圈。


    图 1g00487027

  3. 将两个方形密封件 (18) 安装到油缸组件 (2) 上。

  4. 将活塞密封件 (14) 和 O 形密封圈 (15) 安装到活塞 (12) 上。

  5. 安装活塞外圈弹簧和活塞外圈 (13)。

  6. 将活塞 (12) 和锁紧螺母 (11) 安装到连杆 (17) 上。 拧紧锁紧螺母 (11) 至扭矩为 145.5 ± 37.5 N·m (107.3 ± 27.7 lb ft)

  7. 将弹簧 (16) 安装到连杆 (17) 中。 弹簧 (16) 较小的一端应朝向油缸组件 (2) 定位。

  8. 将阀镶圈 (21) 和阀 (20) 安装到动力活塞 (22) 上。

  9. 将唇形密封 (23) 安装到动力活塞 (22) 上。

    ------ WARNING! ------

    弹簧压缩零件如果安装不当,会伤害人体。

    为避免伤害,遵照出版的装配程序,并穿上保护装备。


  10. 向下推动活塞 (12),使弹簧 (16) 缩回。

  11. 将带有阀 (20) 和阀镶圈 (21) 的动力活塞 (22) 安装到连杆 (17) 上。 使用工具 (A)(未显示)安装挡圈 (19)。 缓慢松开活塞 (12) 至原始位置。


    图 2g00487026

  12. 将通风装置 (10) 安装到油缸组件 (2) 上。


    图 3g00487025

  13. 将新的密封垫 (9)(未显示)安装到油缸组件 (2) 上。 小心放置两个半油缸组件 (2)。


    图 4g00487024

  14. 将八个锁紧螺母 (8) 安装到油缸组件 (2) 的螺柱上。 拧紧锁紧螺母 (8) 至扭矩为 14 ± 3 N·m (124 ± 27 lb ft)


    图 5g00487023

  15. 将排气螺钉 (4) 安装到端盖 (5) 上。 拧紧排气螺钉 (4) 至扭矩为 14 ± 3 N·m (124 ± 27 lb in)

  16. 将 O 形密封圈 (7) 安装到油缸管 (3) 的两端。 将端盖 (5) 放置到软口台钳(未显示)中。 将油缸管 (3) 安装到端盖 (5) 上。 调整端盖 (5) 一圈,底部固定在油缸管 (3) 上。 拧紧端盖 (5) 至扭矩为 14 N·m (124 lb in)。 拧紧螺母 (6) 至扭矩为 88 N·m (65 lb ft)


    图 6g00487022

  17. 重新将油缸管 (3)放置在软口台钳(未显示)上。 将油缸组件 (2) 放置在油缸管 (3) 上。 油缸管 (3) 必须固定在油缸组件 (2) 的底部。 拧紧油缸管 (3) 至扭矩为 14 N·m (10 lb ft)

    注: 必须安装排气螺钉,使排气螺钉在储油罐端口 10 度以内。

  18. 拧紧螺母 (4) 至扭矩为 88 N·m (65 lb ft)

结束:

  1. 安装空气/液压油缸(前钳式)。 请参阅拆解和组装, "空气/液压油缸(前钳式)- 安装"。

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