Brake Valve (Front Service Brake)
Show/hide table
 | |
| 图 1 | g02312938 |
制动器阀（前行车制动器） (1) 前行车制动器电磁阀 (2) 前行车制动器歧管 | |
Show/hide table
 | |
| 图 2 | g02420958 |
左上部机架驾驶室下侧视图 (1) 前行车制动器电磁阀 (2) 前行车制动器歧管 (3) 脚制动器控制（行车） (4) 位置传感器（脚制动器控制） (5) 行车制动器阀（脚控制） | |
制动器阀（前行车制动器）安装在驾驶室下方左上机架上。 制动器阀（前行车制动器）由前行车制动器歧管 (2) 和前行车制动器电磁阀 (1) 组成。 前行车制动器电磁阀 (1) 控制到前行车制动器的机油流量。 到前行车制动器的机油流量由制动器 ECM 基于一个来自位置传感器（脚制动器控制） (4) 的信号确定。 制动器 ECM 允许一些机油从行车制动蓄能器流向前行车制动器。 制动器 ECM 通过控制前行车制动器电磁阀 (1) 的位置来调节机油流量。
制动器 ECM 也利用位置传感器（脚制动器控制） (4) 来激发制动器灯继电器（位于驾驶室内）。 激发制动器灯继电器会点亮制动器灯。
行车制动器阀（脚控制） (5) 安装在驾驶室地板下面。 踩下行车制动器阀（脚控制） (5) 时，内部滑阀引导机油从行车制动蓄能器流向制动器阀（后行车制动器、缓速器控制、牵引力控制）。 随后机油流至后行车制动器。
Caterpillar Information System:
770G and 772G Off-Highway Truck Systems Transfer Gear End Play - Adjust
320E and 323E Excavators Machine Electronic Control System Service Tools
M315C Wheeled Hydraulic Excavator Machine System Pump Coupling
M316D, M318D, M320D2, M322D, M322D 2 MH, M322D2 and M324D 2 MH Wheeled Excavators Machine System Specifications Blade Lift Cylinder
C4.4 Industrial Engine Radiator - Clean
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Accumulator
770G and 772G Off-Highway Truck Power Train Transmission Lubrication Oil Pressure - Test
2011/03/18 A Procedure for Modifying the Turbocharger Group on 797 and 797B Off-Highway Truck Engines Is Available {1052, 1053}
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Hydraulic Tank (Brake, Brake Cooling, Hoist)
770G and 772G Off-Highway Truck Systems Gear Pump (Power Train Charging) Pressure - Test and Adjust
770G and 772G OEM Off-Highway Truck Visual Inspection (Rear Axle and Final Drive)
Comfort Series Seat For Caterpillar Machines Optimized Seat with Front Controls - Disassemble and Assemble
770G and 772G OEM Off-Highway Truck Power Train Hydraulic System Troubleshooting
2011/02/17 Replacing the Lock Assembly on Certain Generator Sets {7274}
2011/03/02 White Color Teflon Insulation is Now Used in (24V) Coil Wire Leads {1554, 3174, 445L, 4804, 4805, 5479, 7556}
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Slack Adjuster
AS4252C Asphalt Screed Principles and Techniques
2011/03/22 Improved Backhoe Loader E2 Boom Stick Pin Retaining Boss {0669, 6501, 6502}
770G and 772G Off-Highway Truck Systems Torque Converter Lockup Clutch Supply Pressure - Test and Adjust
Installation of Cat® Detect Object Detection for 854G, 854K, 992G, 992K, and 993K {1408, 7347, 7348} Installation of Cat® Detect Object Detection for 854G, 854K, 992G, 992K, and 993K {1408, 7347, 7348}
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Oil Cooler (Rear)
770G and 772G Off-Highway Truck Power Train Worksheet
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Valve (Rear Service Brake, Retarder Control, Traction Control)
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Limit Switch (Truck Body Up)