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 seed size.

2. Wheel Slippage—Can vary depending on tire size, tire and sprocket combinations, tire pressure, speed, seed bed condition, soil type and load in machine.

3. Tires—Size, type, air pressure and drive sprockets affect seeding rates. Use tires with the air pressure and driven sprocket listed below.

   Tire Size and Type	kPa	Bar	PSI	Driven Sprocket
   9.5L x 14 in. 8PR Rib Implement	248	2.5	36	38-Tooth
   11L x 15 in. 8PR Rib Implement	193	1.9	28	36-Tooth
   12.5L x 15 in. 8PR Rib Implement	172	1.7	25	34-Tooth

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.

5. IMPORTANT:

   
   A38744-UN-11DEC95

   4.6 m (15-Foot Drill)

   A - Drive Gear

   B - Worm Gear

   C - Attaching Bolts

   D - Support Bracket

   Gear teeth (A) should mesh with drive worm gear (B), but should not “bottom” on drive worm or machine damage can result. The attaching holes in support bracket (D) are slotted. Loosen attaching bolts (C) and move acremeter, bracket and attaching bolts on support bracket to make adjustment.

   Acremeter—Worn out counter gear or chipped teeth; worm gear loose on shaft.

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

   • Inspect gear teeth condition and replace if required.
   • Internally, meter drives at a 1 to 1 ratio. One revolution of counter shaft should make right-hand number advance by one.
   • Check for proper tire pressure.
   • Check part no. of gear and number of teeth for gear installed (16-teeth for 4.6 m (15 ft); 12-tooth for 6.1 m (20 ft).
   
   

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