Great-plains 606NT Operator Manual User Manual download pdf (Page 38)

34 3P605NT, 3P606NT, 605NT & 606NT Table of Contents Index Great Plains Manufacturing, Inc.

151-061M Table of Contents Index 2014-02-10

Opener Spring

Opener springs provide the down pressure necessary for

opener discs to open a seed trench. The springs allow

the openers to ﬂoat down into depressions and up over

obstructions.

Each opener spring can be adjusted for down pressure.

This is useful when planting in tractor tire tracks.

If coulter depth is altered for a row, the spring

pre-compression needs to be changed to compensate

for the change in row unit operating height.

Refer to Figure 34 and Figure 35

To adjust the pressure, remove “W” clip at bottom of

spring. Place “W” clip in a higher hole in spring rod for

more pressure or in a lower hole for less pressure.

Use this adjustment only for a few rows, typically in tire

tracks.

Do not set row force higher on all rows. Instead use

coulter adjustments (page 31) and frame weight

adjustments (page 30).

Re-check drill level (page 17) after adjusting row force.

Figure 34

Minimum Force

12102

“W”

Figure 35

Maximum Force

12103

“W”

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 79 80

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Great-plains 606NT Operator Manual User Manual Page 38