Visual Inspection
转向系统和部件的目视检查是识别故障的第一步。
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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。 |
- 检查所有机油管路和接头有无损坏和泄漏。
- 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。
- 在发动机运转的同时，利用机油取样阀采集油样。 机油取样阀位于转向电磁阀和安全阀上。 检查油样中有无气泡。
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| 图 1 | g01468710 |
转向电磁阀和安全阀上机油取样阀的位置 转向电磁阀和安全阀左机架梁内侧的位置 | |
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| 图 2 | g01507826 |
液压风扇和转向机油滤清器上机油取样阀的位置 转向油箱前方的位置 | |
- 拆下滤清器滤芯。 检查滤芯从油中滤除的杂质微粒。 磁铁将铁颗粒与非铁颗粒（活塞环、O 形圈或密封）分开。
Caterpillar Information System:
793F AC Off-Highway Truck Hydraulic Fan and Steering System General Information
Inspection and Repair of the Door Strut System on Certain Forest Machines and Track Feller Bunchers{5138, 7308} Inspection and Repair of the Door Strut System on Certain Forest Machines and Track Feller Bunchers{5138, 7308}
793F AC Off-Highway Truck Hydraulic Fan and Steering System Pressure Sensors
C4.4 and C6.6 Engines for Caterpillar Built Machines CID 0091 FMI 08
C4.4 and C6.6 Engines for Caterpillar Built Machines CID 0091 FMI 02
C175-16 Locomotive Engine Exhaust Manifold
Transmission Neutralizer Override Control{1435, 7451} Transmission Neutralizer Override Control{1435, 7451}
793F and 793F XQ Off-Highway Truck Hydraulic Fan and Steering System Metering Pump (Steering)
2009/03/16 Improved Life for the Circle Drive on Certain Motor Graders {5207}
Correction for Capacity of the Hydraulic Tank{5056} Correction for Capacity of the Hydraulic Tank{5056}
793F CMD Off-Highway Truck Hydraulic Fan and Steering System Steering Control Valve
793F AC Off-Highway Truck Hydraulic Fan and Steering System Oil Cooler (Hydraulic Fan, Steering)
793F CMD Off-Highway Truck Hydraulic Fan and Steering System Pump Rotating (Steering) Pressure - Test and Adjust
C4.4 and C6.6 Engines for Caterpillar Built Machines CID 0174 FMI 03
793F and 793F XQ Off-Highway Truck Hydraulic Fan and Steering System Relief Valve (Steering) - Test and Adjust
793F AC Off-Highway Truck Hydraulic Fan and Steering System Steering Control Valve - Adjust
AS2252C Asphalt Screed Height Adjuster Group (Extender) - Assemble
AS2252C Asphalt Screed Height Adjuster Group (Extender) - Disassemble
PL1000E Quick Reference Guide{7610} PL1000E Quick Reference Guide{7610}
795F AC and 795F AC XQ Off-Highway Trucks Engine Lockout Control
2008/05/05 The Check Valves on Certain Motor Graders Have Been Improved {5051}
793F and 793F XQ Off-Highway Truck Hydraulic Fan and Steering System Accumulator (Steering) - Test and Charge
793F CMD Off-Highway Truck Hydraulic Fan and Steering System Front Axle - Install and Adjust
2008/06/09 A New Antenna For The Product Link Is Available {7010, 733T}