Tyres, Wheels, Ballasting
187
6
To read wheel slip on the main digital display make
sure the Slip Limit Control is ON then;
STEP 1
STEP 2
The actual wheel slip will be displayed, as a
percentage.
B. Measuring Wheel Slip Without a
True Ground Speed Sensor
If your tractor is not equipped with a True Ground
Speed Sensor, measure the amount of wheel slip
you will need the assistance of a second person:
STEP 1
Put a reference mark on the side of the tractor
rear tyre.
STEP 2
Operate the tractor with the implement IN THE
GROUND.
STEP 3
While the tractor is moving put a marker on the
ground, outside the implement width, where the
reference mark on the tyre comes down to the
ground.
STEP 4
Continue to walk along with the tractor and count
ten wheel revolutions. Put a second marker on
the ground outside the implement width, where
the reference mark on the tyre comes down to
the ground for the TENTH time.
STEP 5
Lift the implement out of the ground. Put the
tractor in position with the rear tyre next to the
first ground marker and put a new reference mark
on the rear tyre aligned with the first ground
marker.
STEP 6
Operate the tractor, with the implement RAISED,
from the first ground marker to the second
ground marker. Count the number of wheel
revolutions between the two ground markers.
STEP 7
Find the percent of slip as follows:
Revolutions of
wheel with
implement raised. Slip (%)
9-1/2.............................................................. 5
9.................................................................. 10
8-1/2............................................................ 15
8.................................................................. 20
7-1/2............................................................ 25
7.................................................................. 30
NOTE: When you have too much ballast installed
on the tractor, you will see the clear shape of the
tyre tread in the ground which is an indication of no
slippage. With too little ballast, the tyre tread marks
will not show because of the tyre slippage.
479A
Press and hold for 2 seconds to enter
the programming mode.
Using scroll through the menu until
the following screen appears.
NO SLIP
CORRECT SLIP TOO MUCH SLIP
TOO MUCH BALLAST
CORRECT BALLAST TOO LITTLE BALLAST
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