Attach closed-center hoses – Great Plains V300 Assembly Instructions User Manual
Page 14
Great Plains Mfg., Inc.
14
Opener Down Pressure Kit
148-771M
11/08/2006
Attach Closed-Center Hoses
This page is for the 148-765A Closed-Center kit. If you
have the 148-766A Open-Center kit, skip to page 15.
Refer to Figure 22. Although the valve assembly is complete at this
step, this figure is shown in exploded view to clarify bottom and rear
connections.
103. A. Select a 43cm hose (18) 811-702C,
(HH3/8R2 017 9/16FJIC).
Attach one end to the bottom port of the tee on the
bottom of adjustment valve (44). Attach the other
end to the bottom (center) port of the tee at the
rear lower port of bypass valve (48).
104. B. Select the 1.1m hose (20) 811-922C,
(HH3/8R2 045 9/16FJIC).
Attach one end to the end/rear/bottom port of the
tee at the end of the fitting tree at the rear port of
adjustment valve (44). Attach the other end to the
fitting at the base end of the down pressure cylin-
der (42).
105. C. Select a 43cm hose (18) 811-702C,
(HH3/8R2 017 9/16FJIC).
Attach one end to the rear port (#3) of the check
valve (47) under the mounting bracket. Attach the
other end to the fitting at the rear (center) port of
the tee at the end of the fitting tree at the rear port
of adjustment valve (44).
106. D. Select the 56cm hose (21) 811-926C,
(HH3/8R2 022 9/16FJIC).
Attach one end to the left port (#1) of the check
valve (47) under the mounting bracket. Attach the
other end to the fitting at the rod end port of the
down pressure cylinder (42).
107. Not shown:
Disconnect the “to tractor”/raise hose
➀
at the top
(base end) of the left lift cylinder
➁
.
E. Shown:
Connect the “to tractor”/raise hose
➀
to the fitting at
the front bottom port of bypass valve (48).
108. Select an ell (57) 811-171C,
(AD 9/16MORB 9/16MJIC).
Remove the existing ell at the top (base end) of the
left lift cylinder
➁
109. F. Select the 2.7m hose (17) 811-699C,
(HH3/8R2 106 9/16FJIC).
Attach one end to the rear port of the tee at the rear
lower port of bypass valve (48). Attach the other end
to the fitting
➁
,(57) at the top (base end) of the left
lift cylinder.
110. Not shown:
Disconnect the “from tractor”/lower hose
➂
at the
bottom (rod end) of the right lift cylinder
➃
.
G. Shown:
Connect the “from tractor”/lower hose
➂
to the fitting
at the front top port of bypass valve (48).
111. Select an ell (57) 811-171C,
(AD 9/16MORB 9/16MJIC).
Remove the existing ell at the bottom (rod end) of
the right lift cylinder
➃
112. H. Select a 1.3m hose (19) 811-705C,
(HH3/8R2 050 9/16FJIC).
Attach one end to the right-facing center port of the
tee at the rear port of adjustment valve (44). Attach
the other end to the fitting
➃
,(57) at the bottom (rod
end) of the right lift cylinder.
113. K. Select the 38cm hose (22) 841-136C,
(HH3/8R2 015 9/16FJIC 3/4FJIC).
Connect one end to the in-line filter on the adjust-
ment valve assembly (44). Attach the other end to
the top rear port of the bypass valve (48).
➀
Figure 22
Closed Center Hoses
25128
➁
➂
➃
T
B
F
B
L
R
A
B
D
E
G
J
H
C
F