O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)
1. Inspect O-ring (A) and seat (B) for dirt or
obvious defects.
2. Back off the lock nut (C) as far as possible. Ensure
that washer (D) is loose and is pushed toward the lock
nut (C) as far as possible.
3. Check that O-ring (A) is
NOT
on the threads and adjust
if necessary.
4. Apply hydraulic system oil to the O-ring (A).
Figure 4.16: Hydraulic Fitting
5. Install
fi
tting (B) into port until back up washer (D) and
O-ring (A) contact the part face (E).
6. Position angle
fi
ttings by unscrewing no more than
one turn.
7. Turn lock nut (C) down to washer (D) and tighten to
torque shown. Use two wrenches, one on
fi
tting (B)
and the other on lock nut (C).
8. Check the
fi
nal condition of the
fi
tting.
Figure 4.17: Hydraulic Fitting
169820
114
Revision A
