789C Off-Highway Truck Air System and Brakes Caterpillar


Service and Parking Brake (Front)

Usage:

789C 2BW



图 1g00907569

(1) 5 只螺柱的扭矩 ... 100 ± 15 牛米 (75 ± 11 磅英尺)

(2) 5 只螺母的扭矩 ... 300 ± 15 牛米 (221 ± 11 磅英尺)

注: 将每只螺母 (2) 扭转一圈,平稳向下拉动壳体。 当所有螺母触底后,按上图标识的字母顺序将螺母拧紧至指定的扭矩。

(3) 51 只螺栓的扭矩 ... 310 ± 25 牛米 (229 ± 18 磅英尺)

(4) 33 只螺柱的扭矩 ... 260 ± 40 牛米 (192 ± 30 磅英尺)

注: 装配前,先将 7M-7456 螺纹锁固胶 涂抹在螺柱 (5) 上。

(5) 33 只螺母的扭矩 ... 880 ± 80 牛米 (649 ± 59 磅英尺)




图 2g00899221

注: 装配时,橡胶双曲面密封件及其所接触的所有表面都必须洁净干燥。 安装前,在所接触的金属密封件表面涂抹薄薄的一层油。 装配时,在所有其他密封件上涂抹润滑油。

(6) 9 只螺母的扭矩 ... 300 ± 15 牛米 (221 ± 11 磅英尺)

注: 将每只螺母 (6) 扭转一圈,平稳向下拉动壳体。 当所有螺母触底后,按十字交叉模式将各个螺母拧紧至指定的扭矩。

(7) 9 只螺柱的扭矩 ... 100 ± 15 牛米 (75 ± 11 磅英尺)

(8) 9D-6093 弹簧 (外部)

数量 ... 32
颜色编码 ... 黄色条纹
测试长度 ... 90.5 毫米 (3.56 英寸)
测试力 ... 4235 ± 169 牛顿 (952 ± 38 磅)
测试后的自由长度 ... 116.5 毫米 (4.59 英寸)
外径 ... 46.02 毫米 (1.812 英寸)

(9) 9D-9121 弹簧 (回位)

数量 ... 4
测试长度 ... 74.90 毫米 (2.949 英寸)
测试力 ... 890 ± 27 牛顿 (200 ± 6 磅)
测试后的自由长度 ... 91.13 毫米 (3.588 英寸)
外径 ... 26.59 毫米 (1.047 英寸)

(10) 35 只螺栓的扭矩 ... 310 ± 25 牛米 (229 ± 18 磅英尺)

(A) 装配的制动器组件

12 个新制动盘、11 个新制动板和 2 个新减振器组件的厚度 ... 101.22 ± 2.76 毫米 (3.985 ± 0.109 英寸)
1 个新 9W-7017 摩擦盘 的厚度 ... 5.08 ± 0.13 毫米 (0.200 ± 0.005 英寸)
1 个新 163-9366 外部制动板 的厚度 ... 2.413 ± 0.064 毫米 (0.0950 ± 0.0025 英寸)
1 个新 7D-3013 减振器组件 的厚度 ... 6.86 ± 0.25 毫米 (0.270 ± 0.010 英寸)

注: 安装减振器组件,将组件表面面向制动板和活塞。




图 3g00899450

(11) 9D-6135 用于压缩活塞的弹簧 (内部)

数量 ... 28
测试长度 ... 90.50 毫米 (3.563 英寸)
测试力 ... 1535 ± 44 牛顿 (345.083 ± 9.892 磅)
测试后的自由长度 ... 115.49 毫米 (4.547 英寸)
外径 ... 26.59 毫米 (1.047 英寸)

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