953D, 963D and 973D Track-Type Loaders Caterpillar


Hydraulic System Pressure Is Low

Usage:

953D LBP

可能原因

  • 液压软管或液压管路有故障

  • 流量补偿器滑阀调节不当。

  • 压力补偿器滑阀调节不当。

  • 负载感应信号回路可能泄漏。

  • 泵中流量补偿器的弹簧损坏。

  • 该泵无法向上运行。

建议的措施

液压软管或液压管路有故障

液压管路和软管的扭结或阻塞也充当节流孔,在高压油被压入小于原始开口的油道时将产生过大的噪音和热量。

务必检查故障系统或回路中所有液压油软管、管路和管上的这些情况。 修理发现的所有故障。 然后,重新测试液压系统的所有症状。

流量补偿器滑阀调节不当

  1. 确定是否正确调节补偿器阀中的流量补偿器滑阀。

    1. 在液压泵上执行边缘压力测试。

      参考: 请参阅机器的测试和调整, "液压泵 - 测试和调整"。

压力补偿器滑阀调节不当

  1. 确保正确调节压力补偿器滑阀。

    1. 在液压泵上执行高压失速测试。

      参考: 请参阅机器的测试和调整, "液压泵 - 测试和调整"。

负载感应信号回路可能泄漏

  1. 检查负载感应信号回路是否泄漏。

    1. 如有必要,修理任何出现的泄漏。

泵中流量补偿器的弹簧损坏



    图 1g00851050
    (5) 流量滑阀弹簧

  1. 检查流量滑阀弹簧 (5) 并确认弹簧未断裂。

泵无法加大冲程

  1. 检查泵是否磨损。

    1. 执行泵效率检查。

    2. 确保旋转斜盘未堵塞且执行器弹簧未断裂。

    3. 如有必要,修理泵。

Caterpillar Information System:

966M and 972M Wheel Loaders Power Train, Steering, Braking, Hydraulic & Machine Systems Check Valve (Brake Accumulator)
C13, C15, and C18 Tier 4 Interim Engines ARD Temperature Is Low
2009/07/27 New Software Released in order to Reduce Harsh Transmission Shifting {7620}
2010/01/18 New O-Ring Seals Are Used on the Front Housings of 3500 Engines {1151, 1162, 1166, 1206, 1207}
Procedure to Improve the Starting Capability on 627G and 637G Wheel Tractor-Scrapers{0645, 1456, 1920, 7620} Procedure to Improve the Starting Capability on 627G and 637G Wheel Tractor-Scrapers{0645, 1456, 1920, 7620}
2010/02/03 A New "B" Pin Bearing Has Been Designed for the Bucket of Medium Wheel Loaders that Are Used As Steel Mill Machines Working in Severe Applications {6107, 7000}
2009/07/27 A New Procedure Is Used for Improving the Starting Capability on 627G and 637G Wheel Tractor-Scrapers {0645, 1456, 1920, 7620}
D7E Track-Type Tractor Hydraulic, HVAC, and Electrical Systems Implement Movement Without Request
C15 and C18 Engines for Caterpillar Built Machines Flywheel - Remove and Install
C9.3 Engines for Caterpillar Built Machines Soot Antenna - Remove and Install
2009/10/05 New Exhaust Manifold for Certain C6.6 Engines {1052, 1053, 1059}
AD30 Underground Articulated Truck Safety Messages
966H and 972H Wheel Loaders Declaration of Conformity
IT38H Integrated Toolcarrier and 938H Wheel Loader Declaration of Conformity
C9.3 Engines for Caterpillar Built Machines Fumes Disposal Filter - Remove and Install
C9.3 Tier 4 Final Engines Diesel Particulate Filter Has High Ash Load
D7E Track-Type Tractor Hydraulic, HVAC, and Electrical Systems Implement Droops Before Raising
2009/09/28 A New Slip Joint Group Improves Service Life of the Drive Shaft {3251}
953D, 963D and 973D Track-Type Loaders Hydraulic System Hesitates
966H Wheel Loader and 972H Wheel Loader Power Train Bypass Switch (Power Train Oil Filter)
2009/07/20 Improved Linkage Bearings Are Now Used on 988G and 988H Wheel Loaders {6501}
C13 Tier 4 Final Engines Valve Rocker Arm
953D, 963D and 973D Track-Type Loaders Machine Movement Without Request
953D, 963D and 973D Track-Type Loaders Machine Movement Is Unstable
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.