GREAT PLAINS 1205NT, Руководство оператора, Страница: 27 / 64

1205NT Table of Contents Index Adjustments 23
3/7/19 Table of Contents Index 150-131M
Coulter Down Pressure Weights
If more weight is required for your soil conditions, add
weights to weight brackets located on box frame. No
more than 1200 pounds (600 pounds per side) should
ever be added. Add an equal amount of weight to each
end of drill. See Table 1.
Spring Length
Coulter springs are preset at 10 inches, giving coulters
an initial operating force of 400 pounds. This setting is
adequate for many difficult no-till conditions.
Equipment Damage Risk:
Resetting coulter-spring length shorter than 9-3/4 inches
may contribute to premature failure of parts and warranty
will be voided. If additional force is needed, add weights to
drill.
For lighter no-till conditions where rocks or other
obstructions are a problem, you can lengthen coulter
springs to protect coulters from impact. Refer to Table
2.
Individual Coulter Adjustment
Individual coulters can be lowered if coulters follow in
tractor tire tracks and do not give satisfactory depth. To
do so:
1. Loosen 5/8 inch jam nuts on 5/8 inch square head
set screws. Then loosen set screws.
2. Lower coulter to desired depth.
3. Tighten set screw on side of coulter clamp first. This
squares coulter bar in clamp.
4. Tighten set screw on front of coulter clamp. Then
tighten both 5/8 inch jam nuts on each set screw.
Note: Torque 5/8 inch set screws 85-100 ft•lbs to obtain
adequate holding force.
Pounds Per Coulter
7-Inch 7.5-Inch 8-Inch 10-Inch
Empty Drill 274 282 290 363
Drill with 300
pounds added
304 314 323 406
Table 1
Weight Chart
10.0 inches
25.4 cm
Figure 15
Coulter Spring Length
Spring Length Initial Vertical Coulter Force
10-1/2 Inches 175 pounds
10-1/4 Inches 300 pounds
10 Inches 400 pounds
9-3/4 Inches 525 pounds
Table 2
Spring Length Chart