OM 803 us – Edition 3.7 * 803b340.fm 3-67
Operation
Checking the hydraulic oil levels of the power unit and excavator
Check the hydraulic oil levels before starting the power unit.
Possible damage to power unit or excavator.
• Check the hydraulic oil levels before starting and observe the following
measures.
• Do not start the diesel engine of the excavator during power unit operation,
otherwise the hydraulic oil levels of the power unit and excavator are
changed.
The power unit and excavator may only be put into operation if the hydraulic oil levels are
between the MIN and MAX marks. Both hydraulic oil (A) and air (B) must be visible in the
sight glass.
• Add hydraulic oil if no hydraulic oil can be seen in one of both sight glasses.
• Do not start operation if no air can be seen in one of the sight glasses. Contact a
Wacker Neuson service center.
Fig. 146:
Power unit Excavator
MAX
MIN
Fig. 147:
Power unit Excavator
A
B
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