GENERAL INTRODUCTION EXPLANATION OF CX SERIES Reservoir The reservoir is pressurized on all models. The air charge is provided by thermal expansion and the differential area of the cylinders as they are stroked the first time. There is a breather/pressure regulator/fill cap installed in the top cover of the units. A rubber-covered button on top of the breather is provided to release the air pressure in the reservoir. A sight gauge mounted to the side of the reservoir indicates the oil level. There is a 150-mesh screen at the outlet of the reservoir to the hydraulic pump. Filters The oil returning from the main control valve flows through the oil cooler.
There is a cooler bypass valve in the circuit to protect the system during cold start conditions. As the oil returns from the oil cooler, it passes through a full flow 10-micron filter. Some of the return oil is routed through a 1-micron ultra-fine filter. Drain oil from the pilot control circuits and the case drain oil from the swing and travel motors is returned through the main return filter. A cartridge type filter is installed in the outlet of the pilot pump to protect all pilot valves from contamination. All of these filters have filter bypass valves for cold start up protection. 1 - 3 CX EXCAVATORS Reservoir MODEL CX130 CX160 CX210 CX240 Capacity Tank gal.
19 32 32 32 Capacity System gal. 32 38 54 59 Filters MODEL CX130 CX160 CX210 CX240 Suction 150 mesh 150 mesh 150 mesh 150 mesh Return 10 µ 10 µ 10 µ 10 µ Ultra-fine 1 µ 1 µ 1 µ 1 µ Pilot 10 µ 10 µ 10 µ 10 µ