Importance of Checking Quantities Drilled

The following variables affect the rates as shown on the rate charts:

1. Quality of Seed-Two bags of seed that weigh the same may have different quantities of seed because of moisture content, trash, unfilled kernels, or simple seed size.

2. Wheel Slippage-It can vary depending on tire size, seed bed condition, soil type, and load in machine. Speed also affects wheel slippage.

3. Tires-Size, type, and air pressure affect seeding rates. Use the recommended tire size and proper air pressure in the chart.

4. Operator Judgment-Land contains more or less area than assumed. Overlapping rows or leaving too wide a space between rows. Turning at row ends without lifting furrow openers.

Recommended Tire
Size and Type (in/mm)		 psi (kPA)
7.60 x 15 in. 6 PR
(190 x 381 mm)
Double Rib		 28 (194)

 

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5. Acremeter-Worn out counter gear (A) or chipped teeth. Worm gear loose on shaft.

6. Use the following checklist to be sure the meter is functioning properly:

  • Inspect gear teeth condition. Replace if required.
  • Internally the meter drives at a 1 to 1 ratio. One revolution of the counter's shaft should make the right-hand number advance by one.
  • Check for proper tire pressure.
  • Check part no. of gear and the number of teeth for the gear installed.
  • Gears available for the acremeter are 30T, 23T, 20T, 19T and 16 tooth.

7. Changing to a smaller gear (less teeth) will speed up the meter reading.

IMPORTANT: Gear teeth should mesh with drive worm gear (B), but should not "bottom" on drive worm or machine damage can result. The attaching holes in the support bracket (D) are slotted. Loosen cap screws (C) and move acremeter, bracket, and attaching cap screws on support bracket to make adjustment.

NOTE: One acremeter is installed on left-hand section for 25 ft machines and on right-hand section for 30 ft and 35 ft machines.

N42115AR


A-Counter Gear
B-Worm Gear
C-Cap Screws
D-Support Bracket

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