Landoll 900B Series, Operator'S Manual

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5-2 TIRES - WHEELS - SUSPENSION
Most tire, wheel, and suspension related problems are due to excessive loads, extreme conditions,
and improper maintenance. Tire, wheel, and suspension problems can be easily detected and solved by
checking the following guide.
SYMPTOM PROBLEM: REMEDY
VIBRATIONS WHILE DRIVING Improper tire inflation: inflate to proper pressure.
Tires cupped or have flat spots: replace tires.
Wheels bent or loose: replace or tighten.
Tires incorrectly mounted: remount.
Mud in wheels: clean wheels.
Tire(s) out of balance: balance tires.
Brakes dragging: locate cause and repair.
Object(s) stuck between duals: remove object(s).
RAPID TIRE WEAR/DETERIORA-
TION:
CENTER TREAD WEAR Over inflation: deflate to correct inflation.
SHOULDER TREAD WEAR -
BOTH SHOULDERS
Under inflation: increase inflation to correct PSI. Check axle
alignment.
Overload: loads are above rated tire capacity. DO NOT load
above rated tire capacity.
SHOULDER TREAD WEAR - ONE
SHOULDER
Axle damage: straighten or replace axle.
Axles not parallel: check axle alignment.
OVERALL TREAD WEAR
Overloading: check tire load rating.
High speeds: adjust speed according to road and load condi-
tions.
Incorrect dual matching: properly match dual tires.
Front and rear axle suspension air bags not inflated: Adjust
front and rear axle ride height control valves to proper settings.
TIRE FLAT SPOTS Quick stops: adjust braking practices.
Grabbing brakes: adjust brakes properly.
Worn or loose wheel bearings: adjust or replace as needed.
Out of balance wheels and tire: balance wheels and tires.
Check ABS system function.
Front and rear axle suspension air bags not inflated: Adjust
front and rear axle ride height control valves to proper settings.
UNEVEN WEAR Suspension bushings worn: replace bushings.
Worn or loose wheel bearings: adjust or replace as needed.
Out of balance wheels and tires: balance wheels and tires.
5-2