The series of Daewoo excavator DH220-5 hydraulic cartridge type valve is rotary control valve equipped in the hydraulic motor, its role and the main relief valve, the same in order to establish the pressure merely rotary relief valve built rotary pressure.
Rotary relief valve installation position: installed in the rotary motor cover and a tube to the right turn, turning a tube on the left. The rotary motor relief valve nouns resolution: plus a spring relief valve is behind the one-way valve to regulate the pressure by adjusting the tightness of the spring, when the mining pressure exceeds the relief valve when the set will overflow the one-way valve top open drain back to the tank. The modern rotary motor relief valve has two: one is the pressure can be adjusted directly, easy to adjust the pressure and the main relief as adjusted.
Another one should not adjusted directly to adjust the pressure to subtract the spacer (the principle is the same) plus the gasket pressure increases, less gasket pressure decreases.
Rotary motor relief valve inspection methods: In general rotary no effort measured pressure enough is rotary motor relief valve. Check and removed it as the main relief valve.
Daewoo Excavator DH220-5 Hydraulic Cartridge Type Rotary Relief Valve
