Maintenance work on the carrier
7.15 Hydraulic system
7 - 104 3 302 649 en Maintenance manual
GMK4090
07.12.2017
Establishing an
operational status
After having changed the oil filters and topping up the oil, you must
re-establish the operating condition.
Opening the valves
• Open the valves – lever (1) parallel with
the line.
• Start the engine.
• Carry out all hydraulic functions several times to remove any air in the
system.
• Test drive the truck crane, turning the steering wheel several times to its
fullest extent.
• Check the oil level through the sight glass on the hydraulic oil tank.
Top up oil if necessary;
à Check the oil level, p. 7 - 91.
• Also check the filling level on the hand pump of the driver's cab tilting
device;
à p. 7 - 2.
S
Risk of damage to the hydraulic pumps
Open the valves prior to starting the engine
This prevents damage to the hydraulic pumps.
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