784C and 785C Off-Highway Truck/Tractors Air System and Brakes Caterpillar


Control Valve (Hoist)

Usage:

785C 1HW
注: 如果高压上升安全阀被调整到 18950 + 700/−0 千帕 (2749 + 102/−0 磅/平方英寸),油泵流速为 775 升/分钟 (205 美制加仑/分钟),则可以使用 132-2048 控制阀 代替 164-9234 控制阀 。


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 2g00908487

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)

(6) 在螺塞的螺纹上涂抹密封剂。

(7) 请参考液压系统技术规格, "安全阀(举升双阶段)"部分。




图 3g00103227

视图 B-B




图 4g00908488

剖面图 C-C




图 5g00908489

剖面图 D-D

(8) 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 6g00908490

剖面图 E-E

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




图 7g00908491

视图 F-F

(10) 阀总成(举升平衡)

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



图 8g00908492

剖面图 G-G

(11) 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)

(12) 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)

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

(14) 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。

(15) 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。

Caterpillar Information System:

784C and 785C Off-Highway Trucks Machine Systems Metering Pump (Steering) - Install
69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Air Control Valve (Retarder)
797 Off-Highway Truck Power Train Transmission Planetary - Assemble
583R Pipelayer Engine Supplement Engine and Torque Divider - Install
CB-434C, CB-534C and CB-634C Vibratory Compactors Water Spray System Water Tank (Front)
583R Pipelayer Power Train Track Roller - Disassemble
D7R Track-Type Tractor Power Train Sprocket Segment - Remove and Install
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Parking Brake - Assemble
69D and 769D Off-Highway Truck and 771D Quarry Truck Air System and Brakes Inverter Valve (Secondary Brake)
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Piston Motor (Hydrostatic) - Install
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Piston Motor (Hydrostatic) - Assemble
D250E Series II and D300E Series II Articulated Trucks 3306B Engine Supplement Engine Rear Mount - Remove
583R Pipelayer Power Train Track Roller - Assemble
3306C Engines for Caterpillar Built Machines Cylinder Block
769D Off-Highway Truck and 771D Quarry Truck Access and Exit Procedures
784C and 785C Off-Highway Truck/Tractors Air System and Brakes Hydraulic Tank (Torque Converter, Hoist, Brake and Transmission)
784C and 785C Off-Highway Truck/Tractors Air System and Brakes Hydraulic Tank (Torque Converter, Pulled Unit, Brake, and Transmission)
784C and 785C Off-Highway Trucks Machine Systems Steering Accumulator - Install
3406E and 3456 Engines for Caterpillar Built Machines Engine Oil Cooler - Install
583R Pipelayer Engine Supplement Fuel Filter and Base - Remove and Install
IT14G Integrated Toolcarrier and 914G Wheel Loader Machine Systems Gear Pump (Implement, Steering and Brakes) - Disassemble
583R Pipelayer Engine Supplement Fuel Ratio Control - Remove
784C and 785C Off-Highway Truck/Tractors Air System and Brakes Control Valve (Pulled Unit)
583R Pipelayer Engine Supplement Fuel Ratio Control - Install
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.