Hitachi ZW 120-6 Operator's Manual page 308

Clean and Replace Double Filter (Optional)
--- When cleaning fresh air filter
1. Remove the double filter:
The double filter is installed behind cover (1) on the left
rear side of the cab exterior. Open cover (1) with the
starter key.
Loosen wing nuts (3) and remove plate (2) with double
filter (7).
Remove bolts (5) (4 used), plate (6), and double filter (7)
from plate (2).
d
CAUTION: When using compressed air pressure, wear
safety glasses or goggles.
IMPORTANT: If compressed air delivery pressure is
high, damage to the filter fins may result. Always use
compressed air at the lower pressure than 0.2 MPa
(2kgf/cm , 29 psi). Keep the nozzle more than 500 mm
2
(19.7 in) away from the core surface.
2. Clean double filter (7).
Clean double filter (7) using compressed air or by
washing with water.
Washing procedure with water is as follows:
2.1 Use tap water.
2.2 Submerge the filter in water containing a neutral
detergent for about 5 minutes
2.3 Clean the filter with water again.
2.4 Sufficiently dry the filter.
3. Install the cleaned double filter or a new filter by
following the filter removal procedure described in step
1 in the reverse order.
MAINTENANCE
4
7-90
1
MNDF-07-032
2
3
MNEC-07-043
4
2
7
6
5
MNHE-07-048
5