Preparations For Inspection And Maintenance - Hitachi ZW 120-6 Operator's Manual

Preparations for Inspection and Maintenance

d
WARNING: If ride control switch (3) is in the AUTO
position, the lift arm may unexpectedly rise. To avoid
an accident due to unexpected movement of the lift
arm, always turn ride control switch (3) OFF before
beginning the inspection and/or maintenance of the
machine.
d
CAUTION: If the machine is unexpectedly moved,
a serious accident may result. Be sure to apply the
parking brake when parking the machine.
Unless specified otherwise, park the machine by following the
procedures below before beginning the inspection and/or
maintenance work.
1. Park the machine on a solid level surface.
2. Lower the working tools such as the bucket to the
ground.
3. Turn ride control switch (3) OFF.
4. Place forward / reverse lever (4) to neutral and place
neutral lever lock (6) to lock ( ) position.
5. Apply the parking brake (Turn parking brake (5) ON.)
6. Wedge the tires.
7. Run the engine at low idle speed for 5 minutes to cool
the engine. Turn key switch (7) OFF to stop the engine.
Again, turn key switch (7) ON and place control lever
lock switch (2) to the unlock ( ) position. Fully operate
control lever (1) 3 to 4 strokes to release residual
pressure in the hydraulic system. In case inspection and/
or maintenance must be performed with the engine
kept running, use a signal person.
MAINTENANCE
4
7-7
1 2
5 6
5
3
MNDB-01-005
7
MNDB-01-001
MNEC-01-058