前言 项目1装载机介绍与交验1 任务1.1装载机介绍1 任务1.2装载机交验7 项目2装载机保养与维护12 任务2.1定期保养与维护计划书编制12 任务2.2工作装置保养15 任务2.3发动机保养与维护17 任务2.4液压系统保养与维护28 任务2.5电气系统保养与维护33 任务2.6空调系统保养与维护36 项目3装载机液压系统分析与检测39 任务3.1液压系统工作原理分析40 任务3.2液压系统性能检测56 项目4装载机电气系统分析与维护60 任务4.1主电路工作原理分析61 任务4.2仪表系统工作原理分析68 任务4.3开关与灯组件工作原理分析70 任务4.4自动复位系统工作原理分析74 任务4.5紧急制动与动力切断系统 工作原理分析75 任务4.6变速操纵系统工作原理分析76 任务4.7倒车报警器更换82 项目5装载机空调系统维护84 任务5.1压缩机的拆卸85 任务5.2储液罐检测87 任务5.3操作空调控制面板89 任务5.4冷凝器检测90 任务5.5传感器检测91 项目6装载机传动系统分析93 任务6.1变矩器工作原理分析93 任务6.2变速器工作原理分析94 任务6.3驱动桥工作原理分析96 项目7装载机故障诊断与排除100 任务7.1液压系统故障诊断与排除100 任务7.2电气系统故障诊断与排除107 任务7.3装载机空调系统故障诊断与 排除113 Project 1Introduction,delivery and inspection of the loader118 Task 1.1Introduction of the loader118 Task 1.2Delivery and inspection of the loader126 Project 2Maintenance of the loader131 Task 2.1Preparation of regular maintenance and service plans131 Task 2.2Maintenance of working devices135 Task 2.3Maintenance of the engine138 Task 2.4Maintenance of hydraulic system152 Task 2.5Maintenance of electrical system158 Task 2.6Maintenance of air conditioning system162 Project 3Analysis and measurement of loader hydraulic system165 Task 3.1Working principle analysis of hydraulic system166 Task 3.2Measurement of hydraulic system performance187 Project 4Analysis and maintenance of loader electrical system192 Task 4.1Analysis of working principle of main circuit193 Task 4.2Analysis of working principle of instrument system202 Task 4.3Analysis of working principle of switch and lamp assembly204 Task 4.4Analysis of working principle of automatic reset system209 Task 4.5Analysis of working principle of emergency brake and power cut-off system210 Task 4.6Analysis of the working principle of transmission control system212 Task 4.7Replacement of reversing alarm217 Project 5Maintenance of loader air conditioning system220 Task 5.1Compressor disassembly222 Task 5.2Receiver testing 224 Task 5.3Operation of the air conditioning control panel227 Task 5.4Detection of condenser228 Task 5.5Detection of sensor229 Project 6Analysis of loader drive system231 Task 6.1Analysis of the operation principle of the torque converter231 Task 6.2Analysis of the operation principle of the gearbox233 Task 6.3Analysis of the operation principle of drive axle235 Project 7Diagnosis and troubleshooting of loader240 Task 7.1Diagnosis and troubleshooting of hydraulic system240 Task 7.2Diagnosis and troubleshooting of electrical system248 Task 7.3Diagnosis and troubleshooting of loader air conditioning system255 参考文献258