Manitowoc Grove GMK 4100L-1 Maintenance Manual page 280

Maintenance work on the superstructure
8.6 Hydraulic system
Establishing the
operating
conditions
S
8 - 44
After having changed the oil filters and topping up the oil, you must
re-establish the operating conditions.
Risk of damage to the hydraulic pumps
Open the valve prior to starting the engine.
This prevents damage to the hydraulic pumps.
•
Start the engine (from the crane cab).
•
Carry out all hydraulic functions several times to remove any air in
the system.
•
Check that none of the oil filters is leaking.
•
Check the oil level through the sight glass on the hydraulic oil tank.
Top up oil, if necessary;
Opening the valve
The plug (1) must be open.
•
Pull the locking bar (3).
•
Open the valve – lever (2) parallel to the line.
•
Insert the locking bar (3).
•
Close the flap (1).
à
p. 8 - 43.
3 302 364 en Maintenance manual
GMK 4100L-1