Measure Wheel Slip—Manually

LV733-UN-25JUN94

A - Initial Tire Mark

B - Ground Starting Point

C - 10 Revolutions Ground Mark

D - Second Tire Mark

1. Draw a visible mark (A) on one rear tire (a chalk mark is recommended).

2. With tractor working, mark a starting point (B) on the ground at the place where tire mark (A) meets the ground.

3. Mark the ground again where tire mark (A) completes 10 full revolutions (C).

4. With implement raised return in the opposite direction. At the second mark on the ground (C) remark tire (D).

5. While driving the tractor along the same path (implement raised), count the tire revolutions required to reach starting point (B).

6. Use the return tire revolution count and Wheel Slippage.

   NOTE: Ideal wheel slippage. 10-15 percent for two-wheel drive tractors or 8-12 percent for four-wheel drive tractors.

7. Adjust ballast or load to give correct slippage.

   NOTE: Available horsepower is greatly reduced when wheel slip drops below minimum percent.

   WHEEL SLIPPAGE CHART
   Non-Loaded Wheel Revolutions (Step 5)	Estimated % Slip	Recommended Action
   10	0	Remove Ballast
   9-1/2	5	Remove Ballast
   9	10	Correct Ballast
   8-1/2	15	Correct Ballast
   8	20	Add Ballast
   7-1/2	25	Add Ballast
   7	30	Add Ballast