MAINTENANCE
7-41
Metal Face Seal Fittings
Fittings are used on smaller hoses and consist of a metal
flare (10) and a metal flare seat (9).
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 repaired.
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)
17 19 22 27
Fastening
torque
N•m 25 30 40 80
(kgf•m) (2.5) (3) (4) (8)
Pilot Piping Fittings (For shuttle valve)
Width across flats (mm) 17, 19
Fastening torque
N•m 35
(kgf•m) (3.5)
M1U1-07-043
Shuttle Valve
7 9 10 5
M202-07-051
8
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