Hydraulic System - Volvo ECR50D Operator's Manual

70°C
Max
(158F)
20°C
Min
(68F)
Decal on hydraulic oil tank
A B
A Correct hydraulic oil level (cold
machine)
B Correct hydraulic oil level (hot
machine)

Hydraulic system

Hydraulic oil level, checking
Check the hydraulic oil level every 10 hours.
When you check the oil, the temperature of the oil
must be between 20 °C (68 °F) and 50°C (122 °F)
[±5 °C (9 °F)].
1 Park the machine on horizontal ground.
2 Operate all cylinders to both directions while the
engine is running.
3 Arrange the machine as shown on the decal:
- dozer blade on the ground
- equipment parallel to the axis of the machine
- bucket cylinder out and dipper arm cylinder in
- equipment lowered to the ground
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4 Open the rear hood.
5 Check the hydraulic oil level in the sight glass.
- At 20°C (cold machine), the hydraulic oil level
must be above the minimum level and well below
the maximum level (A).
- At 50°C (hot machine), the hydraulic oil level must
be below the maximum level and well above the
minimum level (B). If necessary, fill hydraulic oil
through filler neck on the hydraulic oil level sight
glass.
For quality of hydraulic oil please refer to the table
of fuels and lubricants on page
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NOTE!
If the hydraulic system is filled with biodegradable
hydraulic oil from the factory (see sticker on filler
neck), only the oil quality specified on the sticker
must be used to fill up or when changing the oil.
Take care of filters/oils/liquids in an environmentally
safe way, see page
Service and maintenance
Hydraulic system
183 .
133 .
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