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PY80265,05I0177 –19–12SEP05–1/1
Check Tyre Inflation Pressure
Check tyres daily for damage or noticeably low
pressure.
At least every 100 hours of operation, check inflation
pressure with a gauge. Use an accurate gauge having
10 kPa (0.1 bar) (1 psi) graduations.
If tyres contain liquid ballast, use a special air-water
gauge and measure with valve stem at bottom.
NOTE: When furrow plowing or during hillside
operation, tyre pressure can be increased 28
kPa (0.28 bar) (4 psi) ABOVE maximum to
prevent tyre wrinkling or buckling.
IMPORTANT: Always check inflation pressure with
an accurate tyre gauge to prevent
over-inflation. Over-inflation reduces
performance and increases strain of
both tyre and rim.
NOTE: Following inflation information applies to both
front and rear tyres and Tyre Inflation Pressure
Chart.
1. All inflation pressures are calculated for 29 km/h
(18 mph) travel speeds for both diagonal (bias) ply
and radial ply tyres.
2. Operation of tyres at the inflation pressures listed
on chart will result in optimum tractive performance
of the tyre/vehicle system. Correctly inflated radial
tyres will show a large deflection of the sidewall or
“cheeks”. This is normal and will not hurt the tyre if
the inflation pressure is maintained.
3. Inflation pressures less than 80 kPa (12 psi) should
be monitored regularly because of the increased
risk of low pressure air leaks (especially due to
leaking valve cores).
4. Tractors operating on steep side slopes should
increase inflation pressures 28 kPa (4 psi) above
the values listed to compensate for lateral weight
transfer.
5. Tyres run as singles in high traction conditions
sometimes experience bead slip if the bead was not
fully seated or if too much lubricant was used to
mount the tyre. Increasing the inflation pressure will
compensate for this condition but will not cause
reduced traction. Consult your tyre dealer if this
problem occurs.
6. If higher load capacities are needed, contact your
John Deere dealer for tyre manufacturers load and
inflation table information.
75-2
082206
PN=77