Great Plains YP925TD Assembly Instructions - Manual (Page 13)

Great Plains Mfg., Inc. Front Appendix Installation Instructions 13
2012-22-03 Front Appendix 113-870M
Connect Hoses to Cylinders
Note: It will be helpful to have a supporting surface
(platform, table or bench) to support the cylinder
for the next few steps.
Refer to Figure 16 (depicting planter right side)
50. Position each cylinder near the end of the tool bar.
Remove any protective plugs in hose ends. Remove
protective caps on elbow MJICs.
51. Connect hose to the left cylinder base end
elbow.
52. Connect hose to the left cylinder rod end elbow.
53. Connect hose to the right cylinder base end
elbow.
54. Connect hose to the right cylinder rod end
elbow.
Cycle Marker Hydraulics
55. Connect the marker (or marker/lift) circuit to a
hydraulic source, such as tractor remotes.
56. Set the control lever for the remote circuit to Neutral
or Float.
57. Start the tractor or hydraulic pump.
58. Slowly move the circuit lever in the Retract direction
(if the planter is lowered, or on lock channels, it
should remain lowered). Hold the circuit at Retract
until one marker cylinder rod is fully retracted and
the other extended, then hold for several more
seconds. Check for leaks.
59. Slowly reverse the circuit lever, to Extend. If marker
and lift share a circuit, the planter will raise off lock
channels. Hold the circuit at Retract until one
marker cylinder rod is fully extended and the other
retracted, then hold for several more seconds.
Check for leaks.
60. To minimize planter movement with a shared
marker/lift circuit, install lift cylinder locks while the
planter is raised.
61. Repeat step 58 and step 59 approximately ten
times, to ensure that all air has been displaced from
the systems.
During the final iteration of step 59, briefly move the
lever to Retract, then to Extend. Slowly operate the
lever to retract both marker rods.
62. Set the remote circuit to Float. Shut off hydraulic
source. Leave supply hoses connected at source.
High Pressure Fluid Hazard:
Wear gloves and safety eyewear. Use cardboard to check for
leaks. Dangerous releases of hydraulic fluid may occur at
leaks or loose connections. This could lead to serious personal
injury. If hydraulic fluid penetrates the skin, seek immediate
medical attention from a physician familiar with this type of
injury.
Crushing Hazard:
Verify that step 4 on page 3 was completed (raise and lock up
planter). Keep all persons away from planter during marker
circuit testing. If the marker circuit is shared with the lift
circuit, planter raise and lower occurs during marker cylinder
cycles. Anyone near the planter could be pinched or crushed
by unexpected moving parts.
Figure 16
Cylinder Hoses
31800
R2
C2
R1
C1
R2
C2