MacDon M100 SP Operators Manual - Manual (Page 162)

MAINTENANCE/SERVICE
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160
Rev. C
57.10 WHEELS AND TIRES
57.10.1 Drive Wheels
57.10.1.1 Tire Inflation
a. Visually check daily that tires have not lost
pressure. Under-inflation of drive tires can
cause side wall cracks.
DANGER
To avoid severe personal injury or death
caused by machine runaway, shut off engine
and remove key before performing any of the
following checks and/or adjustments.
b. Measure tire pressure annually with a gauge.
Maintain the pressure as follows:
Bar – 32 psi (221 kPa)
Turf – 20 psi (138 kPa)
DANGER
• Never install a tube in a cracked wheel
rim.
• Never weld a wheel rim.
• Make sure all the air is removed from a
tire before removing the tire from the rim.
• Never use force on an inflated or partially
inflated tire. Make sure the tire is
correctly seated before inflating to
operating pressure.
• Do not remove, install or make repairs to
a tire on a rim unless you have the
proper equipment and experience to
perform the job. Take the tire and rim to a
qualified tire repair shop.
• If the tire is not in correct position on the
rim, or if too full of air, the tire bead can
loosen on one side, causing air to leak at
high speed and with great force. An air
leak of this nature can thrust the tire in
any direction, endangering anyone in the
area.
• Do not exceed manufacturer’s
recommended inflation pressure.
• Use a safety cage if available.
• Do not stand over tire. Use a clip-on
chuck and extension hose.
57.10.1.2 Wheel Nut Torque
At first use, or when a wheel is removed, check
drive wheel nut torque every 15 minutes on the
road or 1 hour in the field until the specified
torque is maintained. Continue with a checking
schedule of 10 and 50 hours (field or road
operation), and then every 200 hour intervals
thereafter.
a. Tighten nuts (C) to 220 ft·lbf (300 N·m) using the
tightening sequence as shown.
NOTE
To avoid damage to wheel disks, do not
over-tighten wheel nuts.
b. Repeat sequence three times.
1
5
3
7
8
2
4
6
C