Hitachi Zaxis 850LC-3 Operator's Manual page 247

9. Leave the machine for a while after stopping operation.
After the oil temperature is cooled, push air bleed valve (6)
to bleed air from the hydraulic oil tank.
10. Remove cover (2).
11. Remove oil using a suction pump. The hydraulic oil tank
capacity, up to specified oil level, is approximately 420
liter (111 US gal)
12. Remove drain plug (5) and open drain cock (3).
Allow oil to drain.
13. Remove suction filter and rod assembly (4).
14. Clean the filter and tank interior. If the filter is to be re-
placed, install new filter on the rod as shown. Tighten nut
to 14.5 to 19.5 N•m (1.5 to 2.0 kgf•m, 10.5 to 14.5 lbf•ft).
15. Install suction filter and rod assembly (4). Make sure the
filter is positioned correctly on the outlet.
16. Clean, install and tighten drain plug (5) and drain cock (3).
MAINTENANCE
7-35
3
5
1200 ± 1.5 mm (47.2 in)
20 mm (0.79 in)
Rod Assembly
2
4
M1J1-07-060
157 mm (6.2 in)
M17V-07-069