OPERATING INSTRUCTIONS RH 340 Electric Inspection and servicing Examples of system sections:
Checking the hydraulic oil level
1) working hydraulics 2) servo control circuit 3) precharged return-flow line
Bring hydraulic oil to operating temperature (abt. 50 °C / 122°F). Park the machine on a horizontal surface.
Depressurizing:
Move all hydraulic cylinders to their central positions.
Park the excavator on a horizontal surface.
The oil level must lie between the ½ and ¾ marks of the inspection glass (1, Fig. 3-35:).
Set the working equipment on the ground. Switch off the electric motor. Do not switch off the electrical system, sit down on the operator's seat, Sections 1 and 2: servo control and working hydraulics: Shift both control levers and all pedals repeatedly into all directions (Fig. 3-34:).
Fig. 3-35:
The hydraulic oil level is monitored by the BCS. The BCS displays a warning on the screen (2, Fig. 3-35:) if the hydraulic oil level is too low or too high. Switch off the electric motor, locate cause and rectify.
Fig. 3-34:
Section 3: return-flow line After switching off the electric motor, the precharging pressure decreases rapidly through the precharging valve. No measures are required before opening the return-flow line.
Fig. 3-36:
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BA RH340(3 725 090.00)-EN
