Gason NT8000, Operator'S & Parts Manual

Page: 15 / 63

Unloading and Assembly
11
Hydraulic Circuit - In setting up the hydrau-
lic circuit cylinders should be correctly lo-
cated and aligned. Hoses must be con-
nected to complete the correct circuit as per
schematics provided in the parts section of
this manual. Cleanliness of the system must
be maintained. When securing the hydraulic
hoses to the frames ensure that sufficient
slack is provided in areas where a pivot joins
members or the connection is to a moving
component.
Depth Control - The depth control circuit
consists of master/slave phasing cylinders in
series. Generally the depth control system
will be factory primed.
Wing Fold - A hydraulic circuit is employed
to fold the wings from the working position
for transport or storage. The wing fold cir-
cuit consists of a two double acting cylinders
connected in parallel. Generally the wing
fold system will be factory primed.
HydraTILL Circuit – If configured as a Hy-
draTILL an extra circuit is added including an
accumulator for tine breakout. Generally
the HydraTILL system will be factory primed.
Caution: Maintain a close watch on
tractor oil level and top-up with new clean
oil as required. Observe closely as too low
an oil level may introduce more air into the
system.
Warning: The presence of air in the
hydraulic circuits will cause the implement
to operate erratically and is potentially very
dangerous when folding wings or transport-
ing the implement.
Ground Tool Fitment - There are a selection
of aftermarket ground engaging tools availa-
ble to suit the range of shanks. Selection of
the most appropriate ground tool will de-
pend on your agricultural practices, ground
conditions and sowing boot design.
Torque Specifications
Caution: Torque values listed on the
following page should be used as a guide
only. If a different torque value or tighten-
ing procedure is specified for a specific ap-
plication, do not use these values.
Refer to the Parts section for proper grade
and length of bolts for replacement parts.
Do not replace Nyloc nuts with nuts and
spring washers. Replace all parts with origi-
nal specified parts only (note fastener
grades).
The following torque figures are those rec-
ommended for zinc plated, lightly oiled
bolts. Recommended assembly torques may
be obtained by multiplying the torque fig-
ures in the table below by:
0.78 – for degreased zinc plated bolts.
1.10 – for black oxide finished bolts.
lbf.ft Nm lbf.ft Nm lbf.ft Nm
7/16 UNF 43 59 60 82 - -
7/16 UNC 39 53 54 74 - -
1/2 UNF 67 91 94 128 - -
1/2 UNC 59 81 83 113 - -
5/8 UNF 135 184 186 253 - -
5/8 UNC 117 159 165 224 - -
3/4 UNF 235 319 325 441 - -
3/4 UNC 210 285 290 394 - -
7/8 UNF 370 502 520 706 - -
7/8 UNC 335 455 470 638 - -
1 UNF 550 746 775 1052 - -
1 UNC 505 685 710 963 - -
M10 1.5 29 40 41 56 - -
M12 1.75 51 70 73 100 - -
M16 - - - - - 170 231
M16 2.0 126 171 180 245 - -
M18 1.5 - - - - 254 345
M20 1.5 - - - - 376 510
M20 2.5 247 335 351 477 - -
M22 1.5 - - - - 475 645
M24 - - - - - 500 679
M24 3.0 425 577 608 825 - -
Head Markings
(Manufacturers marks
may vary)
Recommended Assembly Torque
8.8 10.9 Wheel Stud Metric Grade Number
S.A.E Grade Number 5 8
Size
Thread
Pitch
Wheel Stud
Head Markings
(Manufacturers marks
may vary)