Hitachi ZW 120-6 Operator's Manual page 273

Metal Face Seal Fittings
Fittings are used on smaller hoses and consist of metal flare
(9) and metal flare seat (10).
1. Tighten fitting (7) by hand.
2. Tighten fitting (7) or nut (8) to the torque values shown.
Do not allow hose (5) to twist when tightening fittings.
Tightening torque:
Tighten fittings to the torque values shown below.
17 mm
Width across flats
(0.7 in)
N·m 24.5
Tightening
(kgf·m) (2.5)
torque:
(lbf·ft) (18.0) (22.0) (29.0)
MAINTENANCE
19 mm 22 mm 27 mm 36 mm
(0.7 in) (0.9 in) (1.1 in) (1.4 in)
29.5 39 93 175
(3.0) (3.9) (9.3) (17.5)
(69) (129)
7-55
7 9 8 10 5
M202-07-051