Hitachi EX1900-5 Operator's Manual page 198

Metal Face Seal Fittings
Fittings are used on smaller hoses and consist of a metal
flare and a metal flare seat.
1. Inspect flare (10) and flare seat (9). They must be free
of dirt or obvious defects.
IMPORTANT: Defects in the tube flare cannot be re-
paired. Overtightening a defective flare
fitting will not stop a leak.
2. Tighten fitting (7) by hand.
3. Tighten fitting (7) or nut (8) to the torque values shown.
Do not allow hose (5) to twist when tightening fittings.
Width across flats
(mm)
N m
Fastening
(kg m)
torque
(lbf ft)
MAINTENANCE
19 22 27
29.5 39 93
(3) (4) (9.5)
(21.5) (29) (69)
36
175
(18)
(130)
7-66
7 9 8 10 5
M202-07-051