Complete workshop & service manual with electrical wiring diagrams for Hitachi EX400, EX400-3, EX400-3C, EX400-5, EX400LC, EX400LC-5, EX450LC-5 Hydraulic Excavator. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Hitachi EX400, EX400-3, EX400-3C, EX400-5, EX400LC, EX400LC-5, EX450LC-5 Hydraulic Excavator service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.
KM10800 - Hitachi EX400, EX400LC Hydraulic Excavator Technical Manual (Service & Repair).pdf
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ELECTRICAL SYSTEM I Monitor
MONITOR CHECK PROCEDURE
1 . Check for burned-out light bulbs (Before starting the engine)
Upon turning the key switch (clockwise) to the "ON" position, all indicators should light for approximately 2 seconds. If any light does notcome on, this means that the light bulb is burned out.
2. Level check of adequate oil and coolant levels
Before starting the engine, place the key switch in the "ON" position and touch the level check switch. Upon doing so, the green engine oil level, engine coolant level, and hydraulic oil level indicator lights should come on. If a lamp does not go on, this means that the level of that fluid is low.
Also, be sure to check these levels regularly with their conventional level gauge.
• When checking the engine oil level, be sure to position the excavator on a level surface and lower the bucket to the ground, otherwise an incorrect indication may be given.
3. Engine start
a. When the engine is cranked, the engine oil pressure indicator and alternator indicator both light.
b. Once the engine starts, the engine oil pressure indicator and alternator indicator go out.
• When the engine is run at a very low speed, the alternator indicator may turn on. If this happens, increase the engine speed, and check if the light goes off.
• If the engine oil pressure indicator remains "ON" for 6 to 8 seconds after the alternator indicator has gone out, the alarm buzzer will sound. If so, it is necessary to check the engine lubricating system.