MacDon FD75 - O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)

214323 513 Revision A
8.1.5 O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)
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A
B
C
D
Figure 8.11: Hydraulic Fitting
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).
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D
A
E
B
C
Figure 8.12: Hydraulic Fitting
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.
REFERENCE