Great Plains NTA2007 Operator Manual - Manual (Page 36)

32 NTA607 or NTA2007 Table of Contents Index Great Plains Manufacturing, Inc.
166-372M Table of Contents Index 2012-01-05
Heights and Levelling
All frame sections must be at the correct height and level
to maintain even planting depth. The hitch height sets
cart frame level, and must be at a consistent height to
both maintain level, and maintain radar speed
calibration.
Periodic frame-levelling adjustments should not be
necessary. If you are having problems with uneven
depth, check drill levelness and follow these procedures.
Set Tongue Height
Drill must be unfolded for this procedure.
Refer to Figure 17
1.
Complete “Bleeding Hydraulics” on page 119.
2. Unfold the drill fully (page 35).
3. Set the initial tongue height, tractor hitch, and
changing implement hitch configuration as
necessary. Distance is measured at bottom of hitch
to ground level
4. If desired height cannot be attained with normal
range of hitch, hitch may be relocated in tongue bolt
holes. Always have two bolts in use, through two sets
of hitch holes and two sets of tongue holes.
Consistent Seeding Depth Risk:
Level frame in planting conditions. Failure to do so may result
in implement not producing desired results.
Hitch
Position
Hitch Height
Bottom to Ground
A 38.1 cm 15.0in
B 45.7 cm 18.0in
C 53.3 cm 21.0in
D 61.0 cm 24.0in
E 68.6 cm 27.0in
Figure 17
Initial Tongue Height
31129
A
B
C
E
D