O-Ring Boss (Orb) Hydraulic Fittings (Adjustable) - MacDon M Series Unloading And Assembly Instructions

6.1.5 O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)

1. Inspect O-ring (A) and seat (B) for dirt or
obvious defects.
2. Back off lock nut (C) as far as possible. Ensure that
washer (D) is loose and is pushed toward lock nut (C)
as far as possible.
3. Check that O-ring (A) is NOT on threads and adjust
if necessary.
4. Apply hydraulic system oil to O-ring (A).
5. Install fitting (B) into port until back up washer (D) and
O-ring (A) contact part face (E).
6. Position angle fittings 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 fitting (B)
and other on lock nut (C).
8. Check final condition of fitting.
147962
REFERENCE
Figure 6.11: Hydraulic Fitting
Figure 6.12: Hydraulic Fitting
364
Revision A