Visual Inspection
转向系统和部件的目视检查是故障排除的第一步。
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如果有人被困在车轮和车架之间，可能会发生人身伤亡。 转向系统由液压控制，运动时，车轮可能挤压人员。 当在车轮和车架之间工作时，一定要小心。 如果必须转向车轮，在进行任何移动前，确保所有人员远离机器。 |
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不得用手检查有无渗漏。 针孔（非常细小）渗漏可能会导致软管附近出现高速油流。 这种机油可以穿透皮肤，造成个人伤害。 使用纸板或纸张定位销孔渗漏。 |
- 检查所有油管和接头有无损坏。
- 检查泵和接头有无损坏和泄漏。
- 巡查到油箱和各阀的泵管路。 检查管路有无损坏和泄漏。
- 检查油箱有无损坏和泄漏。
- 检查油箱的油位。
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图 1 g00637140 转向油取样阀位置 - 转向油取样阀位于转向泵箱体排油滤清器的回油管路上。 能在转向液压油箱上接近采样阀。
注: 取样应当在发动机处于低怠速且机器未转向时进行。 油样将缓慢注入。 确保油样以正常方式注入。
- 拆下滤清器滤芯。 检查滤芯从油中滤除的杂质微粒。 磁铁将铁质颗粒与非铁质颗粒（ (活塞环、O 形圈或密封件)）分开。
Caterpillar Information System:
D350E Series II and D400E Series II Articulated Trucks Fuel Tank Cap and Strainer - Clean
C9 Engines for Caterpillar Built Machines Crankshaft Main Bearings - Remove
12H, 140H and 160H Motor Graders Machine Systems Articulation Cylinder - Install
980G Wheel Loader Braking System Pilot Control Valve (Implement System) Internal Leakage - Test
12H, 140H and 160H Motor Graders Machine Systems Articulation Cylinder - Remove
12H, 140H and 160H Motor Graders Machine Systems Fuel Tank - Install
Transmission Filter Retrofit Kit Available for Large Off-Highway Trucks{3004, 3067} Transmission Filter Retrofit Kit Available for Large Off-Highway Trucks{3004, 3067}
C9 Engine For Caterpillar Built Machines Housing (Front) - Install
3056 Engine for Caterpillar Built Machines Engine Oil Pump - Install
776D Tractor, 777D and 777D HAA Off-Highway Truck Steering System Relief Valve (Secondary Steering Main) - Test and Adjust
776D Tractor, 777D and 777D HAA Off-Highway Truck Steering System Pressure Reducing Valve (Steering) - Test
776D Tractor, 777D and 777D HAA Off-Highway Truck Steering System Relief Valve (Steering Cylinder) - Test
12H, 140H and 160H Motor Graders Machine Systems Electric Drive Pump (Secondary Steering) - Remove
12H, 140H and 160H Motor Graders Machine Systems Electric Drive Pump (Secondary Steering) - Install
3500B and 3500B High Displacement Generator Set Engines Intermittent Low Power or Power Cutout
12H, 140H and 160H Motor Graders Machine Systems Main Frames - Separate
3500B and 3500B High Displacement Generator Set Engines Low Power/Poor or No Response to Throttle
3176C and 3196 Engines For Caterpillar Built Machines Belt Tensioner - Remove and Install
HH45, HH55, HH65 and HH75 Harvester Heads Tree Harvester Head Delimbing Knife Cylinder - Install
3056 Engine for Caterpillar Built Machines Fuel Filter Base - Remove and Install
3500B and 3500B High Displacement Generator Set Engines Engine Cranks but Will Not Start
3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks System Overview
3524B Engines for Off-Highway Trucks System Configuration Parameters
C9 Engine For Caterpillar Built Machines Crankshaft Main Bearings - Install