992K Wheel Loader and 854K Wheel Dozer Braking System Caterpillar


Hydraulic Oil Contamination - Test

Usage:

854K 221

------ WARNING! ------

热油和热的部件可能会导致人员受伤。 请勿让热的液压油或热的零部件与皮肤接触。



注意

在检验、保养、测试、调整及维修产品时,务必留心,确保液体盛装在容器中。 在打开任何腔室或拆解任何储有液体的部件之前,要准备好用合适的容器收集液体。

有关适合收集和盛接卡特彼勒产品上液体的工具及用品,参考专门出版物, NENG2500, "卡特彼勒工具和修理车间设备指南"。

按照当地法规和指令处置所有液体。


如果油受到污染,可能会造成部件的早期故障。 受到污染的油也会引起过热。 利用以下步骤对系统中的油进行采样:

  1. 起动发动机并在高转速下运转。 使机油温度达到正常工作温度。

  1. 要使机油循环,反复移动转向变速箱集成控制器(STIC)使其经过所有转动位置,并反复踩下制动踏板。

  1. 在低怠速下运转发动机。

    注: 确保转向操纵杆处于 锁定 位置。 不要操作转向变速箱集成控制器(STIC)或者制动器。




    图 1g01445484

    左视图




    图 2g00317549

    先导油泵的位置

  1. 从转向系统先导油泵的取样阀中抽取 50 mL (1.7 fl oz) 油,以便清洗取样阀。 妥善地处理这些油。

  1. 从取样阀中再抽取 50 mL (1.7 fl oz) 油用于分析。 污染等级必须低于下表中的值:

表 1
液压油污染    
颗粒大小(微米)     最大颗粒数    
10 到 20     48000    
21 到 50     2580    
51 到 100     150    
100 或更高     20    

注: 关于获取良好油样的其他信息,参见正在接受测试机器的特殊出版物, PEHP6001, "获取良好油样的方法"。

Caterpillar Information System:

854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0177 - FMI 08
2008/01/28 The Rollover Protective Structure (ROPS) Group is Updated {7000, 7301, 7325}
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0177 - FMI 04
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0177 - FMI 03
2007/12/31 Improved Venting is Now Used in the Fuel Tank {1273}
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0168 - FMI 04
992K Wheel Loader and 854K Wheel Dozer Steering System Steering Control Valve (with Secondary Steering)
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0168 - FMI 03
992K Wheel Loader and 854K Wheel Dozer Power Train Fixed Axle (Front) - Remove and Install
938H Wheel Loader and IT38H Integrated Toolcarrier Steering System Steering Cylinder
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0144 - FMI 06
992K Wheel Loader and 854K Wheel Dozer Steering System Secondary Steering System - If Equipped
993K Wheel Loader Machine Systems Hydraulic Tank (Implement, Hydraulic Fan) - Remove
C9 On-highway Engine Fuel Lines - Remove and Install
854K Wheel Dozer and 992K Wheel Loader Power Train MID 081 - CID 0190 - FMI 08
994H Wheel Loader Electrohydraulic System Visual Inspection
854K Wheel Dozer Machine Systems STIC Control and Pilot Valve (Steering) - Disassemble
854K Wheel Dozer Machine Systems STIC Control and Pilot Valve (Steering) - Assemble
993K Wheel Loader Electrohydraulic System MID 082 - CID 0356 - FMI 06
2008/02/25 A New Harness is Now Used {1120, 1408}
2008/03/10 A New Bracket Is Being Used on the Bucket Positioner {5112}
2007/12/24 Procedure to Install the New Lower Hitch Group {7057, 7100, 7113}
854K Wheel Dozer Machine Systems Steering Control Valve - Disassemble
854K Wheel Dozer Machine Systems Steering Control Valve - Assemble
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