Measure Wheel Slip—Manually

LV733-UN-25JUN94

1. Place a mark (A) on a rear tyre which is easily observed (a chalk mark is recommended).

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

3. Mark the ground again where the tyre 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 the tyre (D).

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

6. Use the return tyre revolutions count and “Wheel Slippage Chart” to determine slippage. 10—15 percent is ideal for two wheel drive and 8—12 percent ideal for MFWD engage tractors.

7. Adjust ballast or load to give correct slippage.

   NOTE: Available horsepower is greatly reduced when wheel slip drops below 10 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	Proper Ballast
   8-1/2	15	Proper Ballast
   8	20	Add Ballast
   7-1/2	25	Add Ballast
   7	30	Add Ballast