Great Plains 2SNT30 Assembly Instructions - Manual (Page 10)

4/9/04 1-8
113-395M
MARKER HYDRAULIC SYSTEM INSTALLATION
INSTALLING: 24 or 30' SINGLE MARKER HYDRAULICS
GENERAL NOTE: JIC fittings do not require high torque. JIC and O-ring fittings do not require sealant. To avoid cracking
fittings or castings from overtightening, DO NOT use plastic sealant tape.
REFER TO THE PICTORIAL HYDRAULIC SCHEMATIC Fig. 8 WHEN INSTALLING SINGLE MARKER HYDRAU-
LICS.
1. Attach the 90˚ swivel elbow (#4) to the base and rod end of the marker cylinder (#3). Thread the close nipple (#15)
in the swivel of the elbow (#4), and thread the needle valve (#16) on the close nipple.
2. Uncoil and attach hose (#6) to the needle valve (#16) on the rod end of the marker cylinder (#3). Uncoil and attach
hose (#5) to the swivel elbow (#4) attached to the base end of the marker cylinder (#3). Route these two hoses through
the frame member cut-outs and hose clamps. Parallel to the hoses feeding the outer gage wheel cylinder as shown in
Fig. 9 on page
1-9. Place the hoses in the clamps later, after the free ends are plumbed.
3. Remove the three bolts (#18) from the top of the tongue truss and install the valve mount plate (#17) under them.
Referring back to schematic Fig. 8, Bolt the selector valve (#7) to the valve mount. The valve is held in place with bolts
(#9), flat washers (#10), lock washers (#11) and nuts (#12).
4. Install the four elbow fittings (#13) in the side ports of the selector valve (#7). Install the two straight fittings (#14) in
the two top ports of the selector valve (#7).
5. Locate the two long hoses (#1) coming from the tractor, going to the fold cylinders. Break the first hose at the “T”
between the rod end of the fold cylinders, the second at the flow divider. Take these same two hoses and install them
on the top two selector valve fittings (#14).
6. The two hoses just removed from the fold cylinders are replaced by two shorter hoses (#2). Run one from the “T”
between the rod end of the fold cylinders to the elbow (#13) on the side of the selector valve. Run the other from the fold
cylinder's base end flow divider to the adjacent elbow (#13).
7. The last hoses to connect should be the two coming from the marker cylinder. Connect these to the two remaining
elbows (#13) on the selector valve (#7) as shown.
Single Marker Hydraulics
Fig. 8
11165