Change Hydraulic Oil/Clean Hydraulic Oil Tank - Hitachi ZW140-6 Operator's Manual

Change Hydraulic Oil/Clean Hydraulic Oil Tank

--- every 2000 hours
Changing and cleaning procedure
d
WARNING: Hydraulic oil becomes hot and pressurized
during operation. Severe burns may result if the
skin comes in contact with escaping hydraulic oil
immediately after operation. Wait for the oil to cool
before starting any maintenance work.
IMPORTANT: Do not use hydraulic oils other than listed in
the "Kind of Oils" - "Hydraulic Oil".
1. Park the machine following the same procedures as
described on page 7-7 for preparation of inspection/
maintenance work.
2. Install articulation lock bar (1) to the front and rear of the
frame by following the procedures described on page
7-9.
3. Before changing the hydraulic oil, be sure to relieve the
air pressure from the hydraulic oil tank by pressing air
bleed valve (2).
IMPORTANT: When changing hydraulic oil, take care not
to permit foreign matter such as dirt, water, and /or
sand to enter into the hydraulic oil tank.
4. Remove cover (3). Arrange a container of approx. 150
liters (40 gallons). Remove drain plug (8) to drain the
hydraulic oil. Put a cover on the oil supply port to
prevent foreign matter from entering.
5. Remove covers (7) (2 used) of the tank bottom. Pull
down suction filters (9) (2 used). Clean the tank bottom
with cleaning oil. Install covers (7) and suction filters (9)
to the original position after cleaning.
MAINTENANCE
3
8
7-48
1
7
9
MNDF-01-026
2
MNDF-07-010
MNDF-07-011
9
M4FC-07-029