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NTA607HD Lift Assist Adjustments
Null4:
General Information
This manual is an instruction guide for reducing load on
the caster wheels or for operating with the caster wheels
fully off the ground. The result will make the NTA607HD
unit more suitable for conventional soil conditions rather
than no-till conditions.
Removing weight bar sets and adjusting the pressure
reducing valve will result in less load on the caster
wheels and less severe tracks in the field, especially in
muddy conditions.
Tools Required
• basic hand tools
• a forklift or similar hoist capable of lifting a minimum of
374kg (825 lbs)
Work Location
Move the implement to a flat location
Notations and Conventions
N u l l 4 :
"Left" and "Right" are facing in the
U
direction of machine travel. An orienta-
R
F
tion rose in the line art illustrations
shows the directions of Left, Right,
L
B
Front, Back, Up, Down.
D
© Copyright 2010
Printed 12/02/2010
Great Plains Manufacturing, Inc.
When you see this symbol, the subsequent instructions
and warnings are serious - follow without exception.
Your life and the lives of others depend on it!
Figure 1
Standard (3 Weight) NTA607HD
1
U
B
R
F
L
D
31285
166-365M
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Summary of Contents for GREAT PLAINS NTA607HD
- Page 1 This manual is an instruction guide for reducing load on the caster wheels or for operating with the caster wheels fully off the ground. The result will make the NTA607HD unit more suitable for conventional soil conditions rather than no-till conditions.
- Page 2 NTA607HD Lift Assist Adjustments Great Plains Manufacturing, Inc. Important Safety Information Look for Safety Symbol The SAFETY ALERT SYMBOL indicates there is a potential hazard to personal safety involved and extra safety precaution must be taken. When you see this symbol, be alert and carefully read the message that fol- lows it.
- Page 3 Important Safety Information Great Plains Manufacturing, Inc. Practice Safe Maintenance ▲ Understand procedure before doing work. Use proper tools and equipment. ▲ Work in a clean, dry area. ▲ Unfold and lower the drill, put tractor in park, turn off engine, and remove key before performing maintenance.
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Page 4: Refer To Figure 3
NTA607HD Lift Assist Adjustments Great Plains Manufacturing, Inc. Before Starting Dense Heavy Overhead Object Hazard: Use adequate lifting means. Use both mounts for lifting. Keep all workers clear of area while a weight is overhead. Keep hands away from underside of weights, and out of stack- to-stack contact regions. - Page 5 Remove Mid Weight Set Great Plains Manufacturing, Inc. Remove Mid Weight Set Refer to Figure 4 and Figure 5 1. Remaining clear of seed towers and hoses, disas- semble mid weight set from the center frame tubes ⁄ ⁄ Remove the...
- Page 6 NTA607HD Lift Assist Adjustments Great Plains Manufacturing, Inc. Adjust Weight Transfer Valves Refer to Figure 6 and Figure 7 Do not set cart weight transfer higher than necessary. Values close to 1000 psi can lift the rear of an empty cart off the ground.
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Page 7: Remove Rear Weight Set
Adjust Linkage Great Plains Manufacturing, Inc. Adjust Linkage Refer to Figure 8 The factory setting of the lift assist link has approximately 7.62cm (3in) of exposed threads outside the fixed end of the lift assist link. Adjust the link (extend it out) by only ⁄... - Page 8 NTA607HD Lift Assist Adjustments Great Plains Manufacturing, Inc. Determine Results 1. Run implement in field. 2. If removing the mid weight stack satisfactorily gets the result you desire (the tires are off the ground as you want) you are done. Make sure to reset valve: back pressure must be set to at least 100 psi.
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Page 9: Table Of Contents
Remove Rear Set of Weights Great Plains Manufacturing, Inc. Remove Rear Set of Weights Refer to Figure 9 About the Weights The 6in 80-row drill model has an extra (fifth) blockage module that the other models (6in 40-row, 7.5in 32-row, 7.5in 64-row) do not require. -
Page 10: D L
NTA607HD Lift Assist Adjustments Great Plains Manufacturing, Inc. Reattach Bolt Channel Brackets 6. Take the two weight bracket bolt channels and two ⁄ x9in bolts per bracket that were removed from the bottom of the mid weight set and remount one each on top of the left and right frame tubes as pic- tured (Figure 10 and Figure 11). - Page 11 Appendix Great Plains Manufacturing, Inc. Appendix Abbreviations inch/inches press wheel kilograms With pounds per square inch 12/02/2010 166-365M...
- Page 12 Great Plains Manufacturing, Inc. Corporate Office P.O. Box 5060 Salina, Kansas 67402-5060 USA 166-365M 12/02/2010...
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