O-Ring Face Seal (ORFS) Hydraulic Fittings
1. Check components to ensure that the sealing surfaces
and
fi
tting threads are free of burrs, nicks, scratches,
or any foreign material.
Figure 4.19: Hydraulic Fitting
2. Apply hydraulic system oil to the O-ring (B).
3. Align the tube or hose assembly so that the
fl
at face
of the sleeve (A) or (C) comes in full contact with
O-ring (B).
4. Thread tube or hose nut (D) until hand-tight. The nut
should turn freely until it is bottomed out.
5. Torque
fi
ttings according to the values in Table
O-Ring Face Seal (ORFS) Hydraulic Fittings, page
118
NOTE:
If applicable, hold the hex on the
fi
tting body (E)
to prevent rotation of
fi
tting body and hose when
tightening the
fi
tting nut (D).
6. Use three wrenches when assembling unions or joining
two hoses together.
7. Check the
fi
nal condition of the
fi
tting.
Figure 4.20: Hydraulic Fitting
169820
117
Revision A
