MacDon M155 - O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)

REFERENCE
O-Ring Boss (ORB) Hydraulic Fittings (Adjustable)
1. Inspect O-ring (A) and seat (B) for dirt o r
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 tha t O-rin g (A) is NOT on the threads and adjust
if necessary.
4. Apply hydraulic system oil to the O-ring (A).
Figure 8.11: Hydraulic F itting
5. Install
fitting (B) into port until back up washer (D) and
O-ring (
A) contact the part face (E).
6. Positio
nanglefittings by unscrewing no more than
one tur
n.
7. Turn lo
ck nut (C) down to washer (D) and tighten to
torque
shown. Use two wrenches, one on fitting (B)
and the
other on lock nut (C).
8. Check
the final condition of the fitting.
Figure 8.12: Hydraulic Fitting
147649 460 Revision A