Operation Instruction
3.11 Tire use and removal and installation
3.11.1 Tire use
Tire, as important parts, must be carefully used and serviced to extend its life as long as possible.
There is always a rated load value for a tire. If exceeding the rated value, the tire will severely be distorted,
excessive bending of tire side is prone to crack
. Tire body fabric and cushion will be prone to adhesive
failure or the fabric is loose until tire is broken down, especially on the irregular pavement or cracked by
obstacles.
Inflated tire pressure should meet the requirements. Too low or too high pressure will shorten the tire life.
Too low pressure will distort the tire, quicken wear out tire surface and even quickly grind the inner and
outer tubes. Finally the core will be cut off and traveling resistance will be increased.
pressure may
cause heavy control; too high of tire pressure may excessively stretch the tire fabric, possibly
causing crack, quickening tire wear and increasing the tractor body vibration. It is better to slightly decrease
tire pressure if field working. It is better to slightly increase tire pressure if traveling on pavement for long
period. The tire pressure should be measured by barometer at ambient temperature rather than when the tire
is hot. Improper driving will cause early wear or damage of tires. During traveling, please avoid crossing the
obstacle at high speed, forcefully braking and sharp turning. If traveling on macadam pavement, please avoid
slip turning as possible as you can.
During traveling, please keep the tires away from chemical corrosion substance such as oil, acid or alkali etc.
It is not allowed to expose to sunshine to avoid the rubber aging.
Frequently check that front wheel alignment and tie-in are in position to avoid tire irregular wear. If the wear
of tire tread is not homogeneous, exchange the left and right tires.
Important:
Front and rear tire pressure of 4DW tractor should stay the same to avoid abnormal wear of tires.
3.11.2 Tire removal and installation
Tire removal
When removing and installing the tires, please use
special tools rather than sharp tools (such as screwdriver)
and large hammer to avoid piercing tires or damaging tire
edge and wheel rim.
If removing tube, please deflate, press the outer tube edge
into the rim groove, use the crowbar to lever the tire edge
around the core out of rim and then use another crowbar
to lever the whole tire edge. After taking out the inner
tube, use the same method to lever out the other side of
tire to take off the outer tube.
Fig.3-15 Tire removal
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