Replace Hst Charge Filter - Hitachi ZW 120-6 Operator's Manual

Replace HST Charge Filter

--- every 500 hours
Replace
d
WARNING: Hydraulic oil becomes hot and pressurized
during operation. Severe burns may result if
skin comes in contact with escaping hydraulic oil
immediately after operation. Wait for the oil to cool
before starting any maintenance work.
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 to the front and rear of the
frame by following the procedures described on page
7-9.
3. Before replacing the filter element, be sure to relieve the
air pressure from the hydraulic oil tank by pressing air
bleed valve (1).
4. Remove the cover of left side step.
IMPORTANT:
 Do not allow foreign matter such as dirt to enter
cartridge type element (4).
 When installing or removing cartridge type element
(4), be careful not to damage cartridge type element
(4).
 Do not reuse cartridge type element (4).
5. Rotate the cartridge type element (4) counterclockwise
with a filter wrench to remove cartridge type element (4)
from filter head (5).
MAINTENANCE
1
7-46
5
4
MNSC-07-013
3
2
MNSC-07-016
M4FG-07-030