Relief Valve (Steering Cylinder) - Test
Show/hide table
所需工具 | 数量 |
7X-0871 三通 | 2 |
6V-3965 螺纹接头 | 2 |
198-4240 数字压力指示器 | 1 |
198-4239 压力传感器 | 1 |
3S-6224 电动液压泵 | 1 |
Show/hide table
图 1 | g00996507 |
(1) 转向计量泵
(2) 到左转向油缸的液压软管 (3) 到右转向油缸的液压软管 |
转向计量泵 (1) 位于驾驶室前端盖板的后面。
- 高怠速运行发动机。 向左或向右转动方向盘,直到接触转向油缸挡块。 之后,紧靠挡块继续转动方向盘。 将方向盘固定到此位置 3 秒后松开方向盘。 继续执行此步骤,直到转向系统内的油温达到至少
38 °C (100 °F) 。 - 要想测试左转向油缸的转向油缸安全阀,向左转动方向盘,直到方向盘停止转动。 关闭发动机。
- 拆下到左转向油缸的液压软管 (2)。
- 将两个 7X-0871 三通安装到转向计量泵 (1) 的接头上。 将液压软管 (2) 连接到第二个三通上。
- 将两个 6V-3965 螺纹接头安装到两个三通上。
- 将 198-4240 数字压力指示器及 198-4239 压力传感器连接到一个螺纹接头上。
- 将 3S-6224 电动液压泵连接到另一个螺纹接头组件上。
- 运行泵并检查压力表上的压力。 转向油缸安全阀的压力设定值为
27200 kPa (3945 psi) 。注: 转向油缸安全阀的压力设定不能调整。 如果转向油缸安全阀的压力设定不当,则更换转向计量泵。
- 拆下工具后将液压软管 (2) 连接到转向计量泵 (1) 上。
- 起动发动机。
- 要想测试右转向油缸的转向油缸安全阀,向右转动方向盘,直到方向盘停止转动。 关闭发动机。
- 拆下到右转向油缸的液压软管 (3)。 执行步骤 4 到 8,以检查右转向油缸的转向油缸安全阀。
- 拆下工具后将液压软管 (3) 连接到转向计量泵 (1) 上。
Caterpillar Information System:
69D and 769D Off-Highway Truck/Tractors and 771D Quarry Truck Power Train Rear Axle Housing End Play - Adjust
24H Motor Grader Transmission Electronic Control System And Hydraulic Calibrations CID 0637 FMI 06 Backup Alarm Current Above Normal - Test
554 Forwarder and 574 Forwarder Fuel Tank Cap and Strainer - Clean
69D, 769D, 773D, 773E, 776D and 777D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Power Train Electronic Control System Sensors
5110B Excavator, 24H Motor Grader, 69D, 769D, 773D, 773E, 776D and 777D Off-Highway Truck/Tractors, 771D, 775D and 775E Quarry Trucks and AD40 Series II, AD45 and AE40 II Underground Articulated Trucks Caterpillar Monitoring System Harness Code Mode
773D Off-Highway Truck and 775D Quarry Truck Engine Oil Level - Check
554 Forwarder and 574 Forwarder Fuel System Secondary Filter Number Two - Replace
69D and 769D Off-Highway Trucks and 771D Quarry Truck Steering System Worksheets
773D Off-Highway Truck and 775D Quarry Truck Engine Valve Lash and Bridge - Check
69D, 769D, 773D, 773E, 776D and 777D Off-Highway Trucks and 771D, 775D and 775E Quarry Trucks Power Train Electronic Control System Relays
773D Off-Highway Truck and 775D Quarry Truck Access and Exit Procedures
69D and 769D Off-Highway Trucks and 771D Quarry Truck Machine Systems Body and Canopy - Install
773D Off-Highway Truck and 775D Quarry Truck Power Train Rear Axle Housing End Play - Adjust
D250E Series II and D300E Series II Articulated Trucks Machine Systems Front Suspension Cylinder - Install
Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Programming Electronic Monitoring Center
69D and 769D Off-Highway Truck/Tractors and 771D Quarry Truck Power Train Rear Wheel Bearing - Adjust
773D Off-Highway Truck and 775D Quarry Truck Power Train Rear Wheel Bearing - Adjust
D250E Series II and D300E Series II Articulated Trucks Machine Systems Fuel Tank - Install
793C and 793C XQ Off-Highway Trucks Power Train Solenoid Valve (Lockup Clutch)
793C and 793C XQ Off-Highway Trucks Power Train Pressure Control Valve (Transmission)
793C and 793C XQ Off-Highway Trucks Power Train Position Sensor (Truck Body)
824G Wheel Dozer, 825G Soil Compactor and 826G Landfill Compactor Hydraulic System Hydraulic Electronic Control (Joystick)
554 Forwarder and 574 Forwarder Fuses - Replace
777D HAA Off-Highway Truck Fire Extinguisher Location