Great Plains 1205NT Operator Manual - Manual (Page 41)

3/28/12 150-131M
39 Adjustments
Dual Markers with Sequence Valve
Refer to Figure 1.
1. Fold markers manually into transport position
when charging hydraulic system for the first
time.
2. Disconnect cylinder pin (1) from rod end of
cylinders and marker link arms (2). Swing
marker link arm up and out of the way.
3. Connect hoses to tractor remote hydraulic
outlets.
4. Loosen hose hydraulic fittings at rod end of
marker cylinders (3).
5. With tractor at idle speed, slowly work tractor
remote lever in the direction which would re-
tract the cylinder.
NOTE: Do not try to retract cylinder. The goal is to
push air from the lines leading to the cylinder. The
position of the sequence valve determines which
cylinder will react first.
6. When the air is expelled, oil will seep out
around a loosened fitting. Tighten the hose fit-
ting.
7. Move tractor remote lever to fully extend cyl-
inder and hold for a few seconds. This will
shift the sequence valve which will allow you
to bleed the other cylinder.
8. Repeat steps 4 through 6 for the other cylin-
der.
9. When the system is bled, move the tractor re-
mote lever several times until both cylinders
stop when fully extended.
10. Reconnect cylinders to marker link arms.
Figure 1
Bleeding Marker Hydraulics
14021