Landoll Bendi B40i4, Maintenance Manual

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2-8 F-581-R1
PLANNED MAINTENANCE
Figure 2-10: Tire Damage Types
Chunking (Chipping) or Embedded Objects
Chunking, or chipping is caused by repeatedly running
over objects on a littered floor which can chip away or
produce deep cuts to the rubber surface of the tire.
Embedded objects, such as glass, metal chips, or nails
left in a tire, and forklift overloading cause the same
effect.
Sharp, rapid turns at quick speeds, jack-rabbit starts and
stops and other such bad driving habits can cause the
same kind of damage. See Figure 2-10.
1. Remove any embedded foreign material from the tire
as soon as it is noticed. Also remove torn pieces of
tread.
2. To avoid overloading, always center the payload on
the forklift to equalize the load on all tires. DO NOT
dangle the load on the ends of the forks. Also avoid
fast cornering, which can cause an overload affect.
3. If the tires are chunked bad enough to produce a
bouncy ride, replace them.
Undercutting and Uneven Wear
Undercutting is caused by continuous overloads, rapid,
sharp turns, operating on slopes, a faulty steer axle,
transporting loads with a high center of gravity, or
transporting off-center loads.
Uneven tire wear is usually the result of mechanical
defects misaligned wheels (misaligned steer axle) or a
faulty drive axle.
Undercutting causes the rubber to bulge out over the
edge of the steel band, cutting the rubber just above the
base band. Check that the tires remain centered on the
wheels to prevent splitting of the base band and tread
separation. Correct such defects as soon as possible.
Flat-spotting
Flat-spotting occurs when:
• The forklift has been sitting idle for some time after
heavy use and is usually caused by overheated tires.
• The forklift has standing loads (loads left on the forks
overnight).
• Locking the brakes while traveling in either direction
on grades (slopes), with or without a load, causing
excessive skidding. Polyurethane tires are extremely
susceptible to this type of abuse.
1. Avoid excessive heat. Where possible, avoid contact
with hot metal or operation for long periods in hot
oven rooms. Excessive heating will break-down the
tire structure. Shields, which prevent heat from
striking tires directly, will often prolong life.
2. Avoid standing loads. Solid tires will flat-spot when
loads are left standing on the forklift overnight. In
extreme cases, a flat spot develops and the tire
bounces with every revolution.
3. If the tires are flat-spotted bad enough to produce a
bouncy ride, replace them.
4. DO NOT indulge in stunt driving or horseplay
particularly on grades (slopes).
To Extend Tire Life
A few simple measures can help increase tire life and
reduce maintenance (downtime) and cost of operation:
1. Inspect tires regularly and remove embedded objects
immediately.
2. Check that the tires remain centered on the wheels.
3. Lubricate the forklift according to the schedules
provided on page 1-8 through page 1-14, however,
avoid over lubricating.
4. Keep runways clean and maintain floors in good
repair, free from breaks, ruts, cracks and debris.
5. Avoid excessive heat, overloading and standing
loads.
6. Regularly check axle alignment and steering.
7. Avoid sharp turns and quick starts and stops.
8. Avoid oil, grease, gasoline and acid. Wipe these
compounds off as soon as possible.
9. DO NOT allow hydraulic oil to drip onto the tires.
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