SECTION 2 -- CONTROLS, INSTRUMENTS AND OPERATION
2--55
Ground Speed Calibration Numbers
The rolling circumference for any given tyre size will
vary depending on tyre manufacturer. The figures
shown in the table are an average based on rolling
circumference
data
supplied
by
several
manufacturers. To obtain an accurate figure for your
rear tyres, consult your authorised dealer or tyre
supplier.
If the size of tyre on your tractor is not listed, then the
road speed calibration may be carried out using one
of the following procedures.
Carry out the Auto calibration as previously
described or measure the rear tyre rolling
circumference.
1. To measure the rolling circumference of the rear
tyre, park the tractor on a level surface and make
a vertical chalk mark on the sidewall where the
tyre tread contacts the ground. Make a second
chalk mark on the ground aligning with the mark
on the tyre.
2. Slowly drive the tractor forward until the rear
wheel has made one revolution and the chalk
mark on the sidewall is again in contact with the
ground. Mark the ground again and measure the
distance between the two chalk marks.
IMPORTANT:
If your tractor is equipped with the
optional slip control feature, then the ground speed
displayed is a true speed as sensed by a radar unit,
calibration is therefore
not
required.
WARNING
The radar ground speed sensor emits a low intensity
microwave signal which will not cause any ill effects
in normal use. Although the signal intensity is low, do
not look directly into the face of the sensor while in
operation so as to avoid eye damage.
Rear Tyre Rolling Circumferences
Tyre Size
Tyre Rolling Circumference
Centimetres
Inches
18.4R -- 30
461.2
181.6
12.4 -- 32
406.9
160.2
16.9R -- 34
473.1
186.3
18.4R -- 34
494.7
194.8
13.6R -- 38
465.6
183.3
16.9R -- 38
503.4
198.2
18.4R -- 38
525.6
206.9
20.8R -- 38
549.3
216.3
18.4R -- 42
552.7
217.6
14.9R -- 46
554.2
218.2
480/70R -- 34
474.5
186.8
520/70R -- 34
490.6
193.1
480/70R -- 38
506.5
199.4
540/65R -- 38
501.5
197.4
520/70R -- 38
525.6
206.9
600/65R -- 38
523.7
206.2
650/60R -- 38
510.8
201.1
650/65R -- 38
544.5
214.4
580/70R -- 38
549.7
216.4
320/90R -- 50
560.3
220.6
Summary of Contents for T6010 DELTA
Page 1: ...OPERATOR S MANUAL T6010 T6020 T6030 T6050 T6070 Delta and Plus Tractors ...
Page 6: ...BLANK ...
Page 28: ...SECTION 1 GENERAL INFORMATION AND SAFETY 1 22 NOTES ...
Page 280: ...SECTION 3 FIELD OPERATION 3 146 NOTES ...
Page 366: ...SECTION 5 FAULT FINDING 5 12 NOTES ...
Page 368: ...SECTION 6 VEHICLE STORAGE 6 2 NOTES ...
Page 400: ...SECTION 8 SPECIFICATIONS 8 24 NOTES ...
Page 402: ...SECTION 9 1ST 50 HOUR SERVICE SHEETS 9 2 ...
Page 404: ...SECTION 9 1ST 50 HOUR SERVICE SHEETS 9 4 ...
Page 410: ...SECTION 10 INDEX 10 6 ...
Page 412: ...sblank ...