Service and maintenance
Hydraulic system 153
Hydraulic system
IMPORTANT! Exercise cleanliness when filling oil and in all
work on the hydraulic system.
Hydraulic oil
The hydraulic oil level is read off on the sight glass located on
the left side of the machine.
The oil level can also be read off on the information display
unit, see page 30. If the oil level is too low, an alarm display is
shown, see page 40. If the temperature in the transmission is
too high or low, the control light is on and an alarm display is
shown, see page 40.
Hydraulic oil, checking level after topping
up or changing
1 Place the machine in service position, see page 95.
2 The oil level should be checked before the engine is started.
3 The oil level should be 3/4 up within the measuring range on
the sight glass (A).
NOTE! If the machine is provided with biologically degradable
hydraulic oil, the same type of oil must be used when topping
up and changing hydraulic oil. Different types of biologically
degradable hydraulic oils may not be mixed.
Hydraulic oil, changing
Change oil every 4000 hours if the system is filled with
hydraulic oil or Volvo Biodegradable Hydraulic Oil.
Change oil every 2000 hours, if the system is filled with any
other biologically degradable hydraulic oil.
Use the same drain hose as when changing engine oil, located in
the front grill.
1 Remove the protective caps over the drain connections.
2 Connect the drain hose to the drain connections (C), on the
hydraulic tank's inside. Draining must take place in both drain
connections.
3 Drain the oil (drain sludge and condensation through the same
connections).
4 Remove the drain hose and install the protective caps on the
drain connections.
5 Fill oil through the hydraulic oil filter by the filler plug (A).
Oil capacity when changing: approx. 175 litres
Oil grade, see page 167.
Take care of filters/oils/liquids in an environmentally safe way,
see page 97.
WARNING!
Take care when changing oil. Hot oil can cause burns on
unprotected skin.
A
7
1
A
B
C
D
A Filler plug
B Level plug
C Drain connection, 2 pcs.
A
B
C
1
7
2
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