UniCarriers FG20 Series Operation & Maintenance Manual page 42

Do not loosen the wheel assembly nuts
when changing a tire
The wheel assembly is locked in two ways: Hub
nut type and nut type. In the hub nut type wheel
assembly, the wheel is installed to the hub; in the
nut type, a wedge ring is inserted between the
wheel and the hub to lock the wheel assembly.
The tire is secured with the side ring and the lock
ring.
When removing a tire from the truck, make sure the
lock ring is securely installed; otherwise, the side
ring, tire, and wedge ring might burst out, resulting
in a severe accident.
Do not loosen bolts and nuts of split rim
assembly:
• The wheel has hub nuts that secure the wheel
to the hub and rim nuts and bolts that assemble
two rims together. When removing a tire from the
truck, do not loosen the bolts and nuts of the split
rim assembly.
If the bolts and nuts of the split rim assembly are
removed, the rims, bolts or nuts might blow off
due to the internal pressure of the tire, to cause a
serious personal injury.
• When replacing the rim assembly, install a new
rim assembly with the head of each of the dowel
bolts of the rim assembly pointing outside. (This
helps make it difficult to loosen the rim bolts with
the tire attached to the truck. Some bolts have a
special shape for this purpose.)
• After replacing tires, test run the truck to check
to see if the hub nuts are securely tightened. If a
loose hub nut is found, tighten it to the specified
torque.
INSPECTION AND SERVICE
The inflation pressure of tires of the lift truck is very
high (about 700 - 1,000 kPa) and thus due caution
must be required to disassemble or reassemble the
tires. An improperly reassembled tire might cause
explosion to let parts fly into pieces, resulting in a
serious personal injury.
Uneven tension of the right and left chains means
uneven loads even if they are properly placed on
the forks. It may also lead to broken chains.
Adjust the sideview mirrors to gain a full rear vision
and keep the mirror's surface clean (if so equipped).
The backup buzzer should sound when the direction
change lever is placed in the reverse position. If the
buzzer fails to sound, have it repaired. Make sure
the lamps turn on and off properly. Burned-out bulbs
must be replaced with new ones.
• Wipe away any spilt lubricant or fuel inside the
engine room.
• Do not leave waste cloth or paper contaminated
with fuel or lubricant inside the engine room; it
can cause fire hazards.
• The exhaust pipe, muffler and exhaust manifold
are hot immediately after the engine has been
shut off or while the engine is running.
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Leave the disassembly and reassembly
of tires, tubes and rims to a specialist
Keep the tension of the right and left
chains even
Keep sideview mirrors, backup alarm,
and lamps in good working condition
Avoid fire hazards