784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Caterpillar


Control Valve (Hoist)

Usage:

785C 1HW



图 1g00493893

俯视图

(1) 8 只螺栓的扭矩 ... 3.00 ± 0.25 牛米 (26.552 ± 2.213 磅英寸)




图 2g00493895

剖面图 A-A

(2) 121-2052 弹簧

施加测试力时的长度 ... 8.0 毫米 (0.32 英寸)
测试力 ... 17.72 ± 0.53 牛顿 (3.984 ± 0.119 磅)
测试后的自由长度 ... 12.7 毫米 (0.50 英寸)
外径 ... 10.312 毫米 (0.4060 英寸)

(3) 121-2051 弹簧

施加测试力时的长度 ... 46.0 毫米 (1.81 英寸)
测试力 ... 21.00 ± 0.63 牛顿 (4.721 ± 0.142 磅)
测试后的自由长度 ... 53.53 毫米 (2.108 英寸)
外径 ... 15.24 毫米 (0.600 英寸)

(4) 118-5087 弹簧

施加测试力时的长度 ... 50.0 毫米 (1.97 英寸)
测试力 ... 243 ± 19 牛顿 (55 ± 4 磅)
测试后的自由长度 ... 63.5 毫米 (2.50 英寸)
外径 ... 35.58 毫米 (1.401 英寸)

(5) 118-5086 弹簧

施加测试力时的长度 ... 55.0 毫米 (2.17 英寸)
测试力 ... 438 ± 35 牛顿 (98 ± 8 磅)
测试后的自由长度 ... 76.2 毫米 (3.00 英寸)
外径 ... 49.2 毫米 (1.94 英寸)



图 3g00103227

视图 B-B




图 4g00103229

剖面图 C-C




图 5g00103234

剖面图 D-D

(6) 7S-8491 弹簧

施加测试力时的长度 ... 25.4 毫米 (1.00 英寸)
测试力 ... 19.2 ± 1.6 牛顿 (4.31 ± 0.35 磅)
测试后的自由长度 ... 41.1 毫米 (1.62 英寸)
外径 ... 30.18 毫米 (1.188 英寸)



图 6g00103235

剖面图 E-E

(7) 滤网组件的扭矩 ... 13 ± 3 牛米 (9.6 ± 2.2 磅英尺)




图 7g00103237

视图 F-F

(8) 132-7102 举升背压阀

开启压力 ... 6900 + 700 - 0 千帕 (1000 + 100 - 0 磅/平方英寸)



图 8g00103238

剖面图 G-G

(9) 后制动油冷却器安全阀

安全阀压力设定值 ... 790 ± 20 千帕 (115 ± 3 磅/平方英寸)
阀体的扭矩 ... 185 ± 15 牛米 (136 ± 11 磅英尺)

(10) 螺塞的扭矩 ... 125 ± 15 牛米 (92 ± 11 磅英尺)

(11) 8B-4624 填隙片

数量 ... 5
厚度 ... 0.81 毫米 (0.032 英寸)

注: 在此调整填隙片的数量。

(12) 8B-4624 填隙片

数量 ... 7
厚度 ... 0.81 毫米 (0.032 英寸)

注: 请勿在此调整填隙片的数量。

(13) 6J-3380 弹簧

施加测试力时的长度 ... 60.5 毫米 (2.38 英寸)
测试力 ... 653.9 ± 51.6 牛顿 (147.0 ± 11.6 磅)
测试后的自由长度 ... 86.6 毫米 (3.41 英寸)
外径 ... 34.95 毫米 (1.376 英寸)

(14) 132-2051 举升装置双级安全阀

(15) 在螺塞的螺纹上涂抹密封剂。

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