MAINTENANCE 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. 8 5 9 7 10 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.
M202-07-051 (mm) 27 Fastening torque 80 (8.0) Pilot Piping Fittings (For Signal Control Valve) Signal Control Valve M1U1-07-043 7-51 17 19 22 N•m 25 30 40 (kgf•m) (2.5) (3) (4) Width across flats (mm) 19 Fastening torque N•m 35 (kgf•m) (3.5)