MacDon M150 SP - Manual (Page 203)

MAINTENANCE AND SERVICING
Form 169017 / 169087 / 169095
201
Revision C
7.13 WHEELS AND TIRES
7.13.1 DRIVE WHEELS
7.13.1.1 Tire Inflation
a. Visually check daily that tires have not lost
pressure. Under-inflation of drive tires can cause
sidewall 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.
c. 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.
• Use a safety cage if available.
• Do not stand over tire. Use a clip-on chuck
and extension hose.
7.13.1.2 Wheel Nut Torque
At first use, or when a wheel is removed, check
drive wheel nut torque every 15 minutes on the
road, or one (1) hour in the field, until the specified
torque is maintained.
Continue with a checking schedule of ten (10),
and fifty (50) hours (field or road operation), and
then every 200 hour interval thereafter.
a. Tighten nuts (A) to 220 ft·lbf (300 N·m) using the
tightening sequence as shown.
NOTE
To avoid damage to wheel rims, do not
over-tighten wheel nuts.
b. Repeat sequence three times.
1
5
3
7
8
2
4
6
A