3. Tightening torque for hydraulic hose connecting nut For the connecting nuts installed to the hydraulic hose adapters in relatively low pressure systems, apply tightening torque in Table 4.1 and 4.2. Table 4.1 Hydraulic hose of face seal type Unit: Nm {kgm} Table 4.2 Hydraulic hose of taper seal type Unit: Nm {kgm} Note: When connecting hose, take care not to twist them. 20 at uses t this Type th O-ring a position at uses t this Outside diameter of hose (mm) Width across flats (mm) Tightening torque (Nm {kgm}) Range Target Approx. 6 19 34 – 54 {3.5 – 5.5} 44 {4.5} Approx. 10 22 54 – 93 {5.5 – 9.5} 74 {7.5} Approx. 13 27 84 – 132 {8.5 – 13.5} 103 {10.5} Approx.
16 32 128 – 186 {13.0 – 19.0} 157 {16.0} Approx. 20 36 177 – 245 {18.0 – 25.0} 216 {22.0} oes ring tion Type that d not use O- at this posi oes ring tion Outside diameter of hose (mm) Width across flats (mm) Tightening torque (Nm {kgm}) Range Target Approx. 6 19 34 - 63 {3.5 – 6.5} 44 {4.5} Approx. 10 24 59 - 98 {6.0 – 10.0} 78 {8.0} Approx. 13 27 84 - 132 {8.5 – 13.5} 103 {10.5} Approx. 16 32 128 - 186 {13.0 – 19.0} 157 {16.0} Approx. 20 36 177 - 245 {18.0 – 25.0} 216 {22.0}