SHB 803 en – Edition 2.4 * 803s314.fm 3-37
Maintenance
Checking the hydraulic oil level
Do not add oil if the oil level is above the FULL mark, otherwise the hydraulic
system can be damaged and escaping oil can cause serious injury.
☞Check the hydraulic oil level each time the machine is put into operation or
once a day
• If the attachment is not positioned as shown:
☞Start the engine and let it run at idling speed
☞Retract the bucket and boom cylinders, lower the boom, the bucket teeth and the sta-
bilizer blade to the ground.
☞Stop the engine again.
☞Proceed as follows:
• Park the machine on level ground
• Stop the engine
• Raise the control lever base
• Open the engine cover
• Sight glass A is located at the rear of the excavator
• Check the oil level on sight glass A
• The oil level should be at the middle of the sight glass
• A yellowish color of the entire sight glass is a sign that too much oil has been filled
in
If the oil level is lower
• Adding hydraulic oil
The oil level varies according to the machine’s operating temperature:
Measure the oil level of the hydraulic system only after the machine reaches its
operating temperature.
Fig. 33: Parking the excavator
max.
min.
Fig. 34: Oil level indicator on the hydraulic oil reservoir
A
Machine condition Temperature Oil level
• Before putting into
operation
Between 10 and 30 °C
(50 – 86 °F)
In the lower part of the sight
glass
• Normal operation
Between 50 and 90 °C
(122 – 194 °F)
In the upper part of the sight
glass
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