Pressure Reducing Valve (Pilot Oil) - Test and Adjust
Show/hide table
机器突然移动,会造成人员伤亡。 机器突然移动或释放气压或油压,可能对机器上或机器附近的人员造成伤害。 在测试和调整任何空气系统或液压系统之前,为防止可能的伤害,执行测试和调整, "概述"部分的程序。 |
Show/hide table
注意 |
---|
在进行检验、保养、测试、调整及维修产品期间,必须小心以确保装好排放出的油液。 在打开任何舱室或解体任何储有液体的部件之前,要准备好合适的容器收集液体。 有关收集和盛接 Cat 产品上油液的适用工具和用品,请参阅专门出版物, NENG2500, "代理商维修工具目录"。 按照当地法规和要求处置所有液体。 |
Show/hide table
所需工具     | 数量     |
177-7861 软管组件     | 1     |
6V-4143 连接器组件     | 2     |
8T-0857 压力表 ( 10000 kPa (1450 psi))     |
1     |
该测试涉及下述阀的设置:
- 控制阀(制动器冷却、举倾)先导油减压阀
Show/hide table
图 1 | g02001133 |
(1) 控制阀(制动器) (2) 减压阀(先导油) |
减压阀(先导油) (2) 位于控制阀(制动器) (1) 上。 控制阀(制动器) (1) 位于机器左侧卡车车斗下方。
Show/hide table
图 2 | g02006316 |
(3) 控制阀(制动器冷却、举倾) (4) 控制阀(制动器冷却、举倾)先导油测压口 |
- 用 8T-0857 压力表 (0 至 10000 kPa (0 至 1450 psi)) 将软管组件连接到测压口 (4) 。
- 起动发动机。 使制动蓄能器完全充注。
- 以低怠速运转发动机。
- 将举倾机构操纵杆 (A) 移到保持位置。
Show/hide table
图 3 | g02004757 |
- 记录压力表上的压力读数。
注: 减压阀(先导油) (2) 的正确压力设置为 3790 ± 345 kPa (550 ± 50 psi)。
- 如果压力设置需要调整,停运发动机。
- 松开减压阀(先导油) (2) 的锁紧螺母 (5) 。
Show/hide table
图 4 | g02001196 |
(2) 减压阀(先导油) (5) 锁紧螺母 (6) 调整螺钉 |
- 顺时针旋转调整螺钉 (6) 1/4 圈,以升高压力。 逆时针旋转调整螺钉 (6) 1/4 圈,以降低压力。
- 重复步骤 2 到步骤 8,直到获得正确的压力设置。
Caterpillar Information System:
Installation of the RS232/ASCII Communication Card{4480} Installation of the RS232/ASCII Communication Card{4480}
797F and 797F XQ Off-Highway Truck/Tractor Braking System Foot Brake Control (Service) Pilot Pressure - Test
793F Off-Highway Truck Traction Control System (TCS) - Test
797F and 797F XQ Off-Highway Trucks Service Brakes - Inspect
3500 Generator Sets Declaration of Conformity
3500 Generator Sets Sound Information
CX31-P600 Petroleum Transmission Transmission Covers - Integral Pump Drives
795F AC and 795F AC XQ Off-Highway Trucks Rollover Protective Structure (ROPS) - Inspect
797F and 797F XQ Off-Highway Trucks Radiator, Aftercooler and Air Conditioner Condenser - Clean
797F and 797F XQ Off-Highway Trucks Pump Drive Return Screen - Clean - Transmission and Torque Converter System
C13 and C15 On-highway Engines ARD Fuel Pressure Is High
Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216} Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}
797F and 797F XQ Off-Highway Trucks Transmission Oil Filter - Replace
797F and 797F XQ Off-Highway Trucks Transmission Magnetic Screen - Clean
797F and 797F XQ Off-Highway Trucks Torque Converter Oil Filter - Replace
797F and 797F XQ Off-Highway Trucks Torque Converter Outlet and Sump Screens - Clean
G3512E and G3520E Generator Set Engines Integrated Temperature Sensing Module
793F Off-Highway Truck Machine Systems Traction Control Valve - Assemble
797F and 797F XQ Off-Highway Truck/Tractor Braking System Motor Rotating Group (Brake Cooling) - Adjust
349F and 352F Excavators Hydraulic System Accumulator (Pilot) - Test and Charge
797F and 797F XQ Off-Highway Trucks Torque Converter and Transmission Oil Sample - Obtain
CX31-P600 Petroleum Transmission Coupling Fastener - Flywheel) (C9 - C13 Engines
325D and 329D Excavators Hydraulic System Swing Bearing Movement - Measure
797F and 797F XQ Off-Highway Trucks Torque Converter Sump Oil Level - Check