Hitachi ZAXIS 30U-5N Operator's Manual page 210

7. Remove oil level check plug (2).
8. Add oil until oil flows out of oil level check plug (2) hole.
Model
ZX30U-5N, 35U-5N
ZX50U-5N, 60USB-5N 0.9 L (0.95 US qt)
f
NOTE: Refer to the recommended oil and grease chart on
page 7-17 for the brand names of oils.
9. Clean and tighten the plugs (1) and (2).
Model
Plug (1)
ZX30U-5N,
35U-5N
Plug (2)
Plug (1)
ZX50U-5N,
60USB-5N
Plug (2)
10. Repeat steps 2. to 9. for the other travel reduction gear.
MAINTENANCE
Oil Quantity
0.6 L (0.63 US qt)
Tightening Torque
46 to 51 N·m (4.6 to 5.1 kgf·m,
33 to 36 lbf·ft)
12 to 18 N·m (1.2 to 1.8 kgf·m,
9 to 13 lbf·ft)
22 to 24 N·m (2.2 to 2.4 kgf·m,
16 to 17 lbf·ft)
7-30
1
2
3
M585-07-080