Replace Fuel Pre-Filter Element (Zx50U-5N, 60Usb-5N) - Hitachi ZAXIS 30U-5N Operator's Manual

Replace Fuel Pre-Filter Element (ZX50U-5N, 60USB-
5N)
--- every 500 hours or when fuel filter clogging lamp
is lit
IMPORTANT:
 Be sure to use only genuine Hitachi elements for
the fuel pre-filter element. Failure to do so may
deteriorate the engine performance and/or shorten
the engine service life. Please be noted that all
engine failures caused by using other manufacturers'
elements are excluded from Hitachi Warranty Policy.
Procedures:
1. Park the machine following the same procedures as
described on page 7-6 for preparation for inspection and
maintenance.
2. Close cock (2).
3. Place a 1 liter or larger capacity container under drain
plug (4).
4. Loosen air bleed plug (1) and drain plug (4). Drain fuel
until fuel does not flow out of the filter.
5. Remove filter case (3) by using a special tool.
6. Remove the filter element.
7. Replace the O-ring with new ones.
8. Install a new element and O-ring. Tighten filter case (3)
by using a special tool.
Tightening Torque : 30±3 N·m (2.8 to 3.4 kgf·m, 21 to 25
9. Tighten air bleed plug (1) and drain plug (4).
10. Open cock (2).
11. Bleed Air from the Fuel System
After replacing the fuel filter element, bleed air from the
fuel supply system.
(Refer to "Bleed Air from the Fuel System".)
MAINTENANCE
lbf·ft).
7-59
Fuel Pre-Filter
MADG-07-001
1
2
3
4
MADG-07-002