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


Relief Valve (Rear Brake Oil Cooler) - Test and Adjust

Usage:

785C 1HW



图 1g00502953

后制动油冷却器安全阀测试端口的位置

  1. 从测试端口上卸下螺塞。 在测试端口中安装一个 2P-8421 O 形环适配器 。

  1. 6V-3965 螺纹接头 安装到适配器上。 将软管连接至螺纹接头。

  1. 在软管上安装一个 8T-0854 压力表 (0 至 1000 千帕 (0 至 145 磅/平方英寸))。

  1. 将举升操纵杆移至 HOLD 位置,并起动发动机。

  1. 查看压力表。 最大压力读数应为 790 ± 20 千帕 (115 ± 3 磅/平方英寸).



    图 2g00283757

    后制动油冷却器安全阀

    (5) 8B-4624 填隙片

    (6) 8B-4624 填隙片

  1. 根据需要,调整填隙片 (5) 的数量,以获得正确的安全阀压力设定值。 请勿调整填隙片 (6) 。

    表 1
    填隙片与安全阀压力设定值调整幅度    
    零件号     厚度     压力变化量    
    8B-4624    
    0.81 毫米 (0.032 英寸)    

    30 千帕 (4 磅/平方英寸)    
    8B-4624    
    0.81 毫米 (0.032 英寸)    
    请勿调整。    

Caterpillar Information System:

773D Off-Highway Truck and 775D Quarry Truck Lifting and Tying Down the Machine - 773D Off-Highway Truck
784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Relief Valve (Hoist Dual Stage) - Test and Adjust
773D Off-Highway Truck and 775D Quarry Truck Leaving the Machine
950G Wheel Loader, 962G Wheel Loader and IT62G Integrated Toolcarrier Hydraulic System Solenoid Valve (Pilot Diverter, 4 Function Hydraulics) Operation - Check
3406E On-Highway Engine Crankshaft Main Bearings - Remove
583R Pipelayer Power Train Steering Clutch and Brake Control Valve - Remove
784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Control Valve (Pulled Unit)
3304B and 3306B Engines for Caterpillar Built Machines Connecting Rod Bearings - Remove
784C and 785C Off-Highway Trucks Machine Systems Wheel, Brake and Suspension (Front) - Remove
3176C and 3196 Engines for Caterpillar Built Machines Valve Mechanism
3306C Engines for Caterpillar Built Machines Crankshaft Pulley
3406C Engines for Caterpillar Built Machines Fuel Filter (Primary)
583R Pipelayer Power Train Steering Clutch and Brake - Disassemble
583R Pipelayer Power Train Steering Clutch and Brake Control Valve - Install
3304B and 3306B Engines for Caterpillar Built Machines Connecting Rod Bearings - Install
69D and 769D Off-Highway Trucks and 771D Quarry Truck Machine Systems Brake Tank (Makeup) - Remove and Install
583R Pipelayer Power Train Steering Clutch and Brake Control Valve - Disassemble
784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Relief Valve (Pulled Unit Dual Stage) - Test and Adjust
784C and 785C Off-Highway Trucks Machine Systems Wheel, Brake and Suspension (Front) - Install
824H Wheel Dozer, 825H Soil Compactor and 826H Landfill Compactor Power Train Torque Converter - Disassemble
583R Pipelayer Power Train Steering Clutch and Brake Control Valve - Assemble
3408E and 3412E Engines for Caterpillar Built Machines Fuel Filter Base
789C Off-Highway Truck/Tractor Air System and Brakes Hydraulic Tank (Torque Converter, Hoist, Brake, and Transmission)
IT14G Integrated Toolcarrier and 914G Wheel Loader Machine Systems Loader Frame and Rear Frame - Connect
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