Great Plains V300 Assembly Instructions - Manual (Page 4)

Great Plains Mfg., Inc.
4 Opener Down Pressure Kit
148-771M 11/08/2006
Assemble Closed-Center Valves
This section is for the 148-765A Closed-Center (CC) kit.
If you have the 148-766A Open-Center kit, see page 7.
Callout numbers are assigned from the “Kit Parts List”
on page 24.
Torque fittings and fasteners per “Torque Values” on
page 23.
A cluster of arrows in each diagram shows directions (T)
Top, (B) Bottom, (L) Left, (R) Right, (F) Front and (R)
Rear.
Assemble CC Down Pressure Control Valve
Refer to Figure 6
20. Select the (44) 810-301C,
(VALVE PRESS REDUCING W/CHECK).
Note: The orientation of the valve is that the control
knob faces Front and is toward the Bottom of the
valve body.
21. Select a (58) 811-216C,
(EL 3/4MJIC 9/16MORB).
Screw the male O-ring boss end into the Top Front
port of valve body (44). Adjust the JIC end to face
Left and tighten jam nut.
22. Select the (65) 811-677C,
(AD 9/16MORB 1/4FNPT).
Screw the male O-ring boss end into the Top Rear
port of valve body (44). Do not fully tighten.
23. Select a (52) 811-064C,
(TE 9/16MJIC 9/16MJIC 9/16MORB).
Screw the male O-ring boss end into the Rear port
of valve body (44). Adjust the tee so the center port
faces Right and tighten jam nut.
24. Select a (66) 841-077C,
(EL 3/4FJIC 3/4MORB).
Screw the female JIC end onto fitting (58). Adjust
angle so that the ell points to the Rear, and tighten.
25. Select the (43) 810-300C,
(PRESSURE GAUGE 3000 PSI).
Apply TFE sealant to threads. Screw it into fitting
(65). Tighten gauge to come as close as possible
to suggested torque values, and still have gauge
facing Forward.
26. Select a (52) 811-064C,
(TE 9/16MJIC 9/16MJIC 9/16MORB).
Screw the male O-ring boss end into the Bottom
port of valve body (44). Adjust the tee so the center
port faces Left and tighten jam nut.
27. Select a (52) 811-064C,
(TE 9/16MJIC 9/16MJIC 9/16MORB).
Screw the female JIC end onto fitting (52) on the
Rear of valve body (44). Make the final turns to
leave the open end facing down.
28. Select the (49) 810-554C,
(FILTER INLINE 3/4FORB 3/4MJIC).
Screw it onto fitting (66) and tighten.
Figure 6
CC Down Pressure Valve
25170
44
43
49
58
66
65
52
52
50
55
T
B
R
L
F
R