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Complete workshop & service manual with electrical wiring diagrams for Hitachi ZX670LC-5A, ZX690LCH-5A 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 ZX670LC-5A, ZX690LCH-5A 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.
KO-493-02 – Hitachi ZAXIS 470-5 class, 670-5 class, 870-5 class Assembly Procedure Manual.pdf
TOJBG-EN-00 – Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Operational Principle).pdf
TTJBG-EN-00 (attach to) – Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Electrical Circuit Diagram.pdf
TTJBG-EN-00 – Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Technical Manual (Troubleshooting).pdf
WJBG-EN-00 – Hitachi ZX670LC-5A, ZX690LCH-5A Hydraulic Excavator Workshop Manual.pdf
Travel Relief Valve Set-Pressure Adjustment Procedure
Adjust the set pressure of travel relief valve (1) using adjusting screw (3) after loosening lock nut (2).
1. Loosen lock nut (2).
j 19 mm
2. Turn adjusting screw (3) to adjust the pressure setting, referring to the table below.
j 6 mm
3. Retighten lock nut (2).
j 19 mm
m 34.3 to 44.1 N·m
1 (3.5 to 4.5 kgf·m)
4. After adjustment check the set pressure.