BA 50Z3/6003 en – Edition 4.3 * 5003b520.fm 5-29
Maintenance
Checking the hydraulic oil level
Do not add oil if the oil level is above the MAX mark, otherwise the hydraulic
system can be damaged and escaping oil can cause serious injuries.
☞ Check the hydraulic oil level each time the machine is put into operation or
once a day.
• Park the machine on level ground.
• Position the boom straight ahead.
• Retract the bucket and boom rams, lower the boom and the bucket teeth to the ground.
• Lower the stabilizer blade to the ground.
• Stop the engine.
• Raise the control lever base.
• Remove the ignition key and carry it with you.
• Unlock and raise the engine cover.
• Sight glass B is located at the rear right corner of the machine on hydraulic oil tank A.
• Check the oil level on sight glass B.
• The oil level must be about 1 cm (0.39 in) over the centre, between positions MIN and
MAX, as shown by the arrows in Fig. 292.
➥ The MIN mark is black.
➥ The MAX mark is yellow.
If the oil level is lower:
• Add hydraulic oil.
• Close and lock the engine cover.
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. 291: Parking the machine
Fig. 292: Oil level indicator on the hydraulic oil tank
MAX
MIN
A
B
Machine condition Temperature Oil level
Before putting into operation
Between 10 and 30 °C
(between 50 and 86 °F)
MIN mark
Normal operation
Between 50 and 90 °C
(between 122 and 194 °F)
MAX mark
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