Iran Tractor ITM 475, Operators Instruction Book

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3
Tractor operation 34
bolts, nuts, etc.
4. To ensure proper clutch life, care must
be taken to bed-in the friction plates
properly.
Note
During the first 15 hours of the trac-
tor’s life, frequently, but carefully en-
gage and disengage the clutch. During
the first 50 hours a careful watch must
be kept on the clutch pedal free travel,
which should be adjusted as soon as the
pedal travel decreases.
Driving the tractor
Warning
Before operating the tractor,
familiarise yourself with the function of
the brakes, clutch, transmission, PTO,
differential lock controls.
Use of the travel speed chart (Fig.
3)
Typical travel speed charts are illus-
trated in figure 3. The following instruc-
tions should be applied to the chart on the
left hand fender or inside the cab of your
tractor.
To read the travel speed chart (Fig. 3)
1.The bold horizontal bars on the chart
represent the operating speed range of
the engine in the various gears.
2. The small gap in the bar represents the
PTO/ engine speed. This can be related
to the road speed in km/hr or mile/hr
at the top and bottom of the chart.
3. The letters are the gear ranges, ‘H’ -
high, ‘L’ - low. Numbers are the gears,
‘1’ - first ‘2’ - second etc.
4. The information in the box gives the
engine operating speed range, in this
example, 1200 to 2000 rev/min. The
540 PTO engine speed is 1683 rev/
min.
Fig. 3:
5. Example of use:
Require 540 PTO speed at 9 km/hr road
speed. Set engine speed to 1683 rev/
min, on the chart select the horizontal
bar where the small gap is opposite,
or close to the 9 km/hr road speed, in
this case it is the bar for first gear in
high-fast range.
Having started the engine
1. Fully depress the clutch pedal, then se-
lect the required gear and move the dual
range and synchro 12 selector lever to
the HIGH or LOW range (as applicable).
2. Release the parking brake.
3. Increase the engine speed slowly and
release the clutch pedal slowly.
4. Remove your foot from the clutch pedal
and slowly increase the hand throt-
tle opening until the required engine
speed is reached.
Caution
Do not ‹ride› the clutch or neglect
clutch adjustments or rapid and severe
clutch damage will result.