Buhler 2180 - Manual (Page 179)

SECTION 2 - OPERATION
2-133
CHECKING WHEEL SLIPPAGE
A good way to monitor ballasting requirements is to
check the drive wheel slippage. Slippage should be
8-15% in normal field conditions.
If the drive wheels slip excessively, more weight may
be required. However, remember that excessive load
and/or poor traction conditions will also cause
excessive wheel slip.
Wheel slippage will vary as field conditions change,
so always check slippage several times and average
the results. Remove weight if slippage is less than
8%.
Wheel slippage is measured automatically by the
optional radar in the Tractor Performance Monitor.
Wheel slippage can also be measured manually as
described below.
1. Mark a tire with a large white mark.
2. With the tractor fully loaded, mark a starting point
on the ground.
3. Keep tractor loaded and mark the ground again
when tire completes 10 full revolutions.
4. Drive back over the course again at working
speed, with implement raised. Count tire
revolutions between the same two marks.
5. Use second count of tire revolutions and the
wheel slippage chart to determine percentage of
slippage.
NOTE: A rate of 10-15 percent for two-wheel-drive or
8-12 percent for FWD equipped tractors is ideal.
6. Adjust ballast or load to give correct slippage.
NOTE: Available drawbar horsepower is reduced
when wheel slip drops below 8 percent because
energy is wasted carrying excess weight on the
tractor.
Wheel Slippage Chart
Wheel Revolutions
Counted in Step 4
% Slip Result
10 0 Remove
B ll t
9-1/2 5
Ballast
9 10 Proper
B ll t
8-1/2 15
Ballast
8 20 Add
B ll t
7-1/2 25
Ballast
7 30
BALLAST LIMITATIONS
IMPORTANT: Do not exceed the tractor gross
vehicle weight shown below. This can cause an
overload condition that may void the warranty and
may exceed the load rating of the tires and ROPS
structure.
Ballast should be limited by the tire capacity or tractor
capacity. Each tire has a recommended carrying
capacity which should not be exceeded. If a greater
amount of weight is needed for traction, either a
larger single tire or duals should be used.
Ballast can be added by bolting on cast iron weight,
or by adding liquid calcium chloride in the tires.
Bolt-on cast iron weight is recommended because it
can easily be removed when not needed.
IMPORTANT: The maximum recommended gross
vehicle weight (gvw) is:
2145: 9875 kg (21,750 lbs)
2160: 14300 kg (31,500 lbs)
2180: 14300 kg (31,500 lbs)
2210: 14300 kg (31,500 lbs)