Terex TR60 Maintenance Manual page 183

TYRE EXPLOSION HAZARD
WARNINGS
Whenever a machines tyre(s) is (are) exposed
to excessive heat such as a machine fire or
extremely hot brakes the hazard of a
subsequent violent tyre explosion must be
recognized. All persons must avoid
approaching the machine so as not to be
physically endangered in the event of an
explosion of the tyre and rim parts. The
machine should be moved to a remote area,
but only when this can be done with complete
safety to the operator operating or towing the
machine. All other persons should stay clear
of the machine. The fire or overheated brakes,
wheel, etc. should be extinguished or cooled
from a safe distance. Do not attempt to
extinguish the fire or cool the machine by use
of hand-held fire extinguishers.
If it is absolutely necessary to approach a
machine with a suspect tyre, approach only
from the front or the back. Stay at least 15 m
(50 ft) from the tread area. Keep observers out
of the area and at least 460 m (1 500 ft) from
the tyre sidewall. Refer to Fig. 10. The tyre(s)
should be allowed at least eight (8) hours
cooling time after the machine is shut down or
the fire extinguished before approaching
closer.
SM 1582 12-98
AT LEAST 15 m (50 ft)
Fig. 10 - APPROACH AREA. Do Not Approach Tyre in Shaded Area
Rear Axle - Wheel, Rim and Tyre
AT LEAST 460 m
(1 500 ft)
There is always a possibility of a tyre
explosion whenever the smell of burning
rubber or excessively hot brakes is detected.
The danger is also present when a fire on the
machine reaches the tyre and wheel area.
Under such conditions, all personnel must
avoid approaching the machine in a manner
that could result in injury should an explosion
actually occur. Move the machine to a remote
area only if it can be done without
endangering the operator or other personnel
in the area.
DO NOT WELD ON OR HEAT RIM
COMPONENTS. For several years the company
and tyre and rim manufacturers have warned
users never to weld rim components with the
tyre mounted on the rim. The gases that build
up inside the tyre during arc welding or
heating on rim components can ignite,
resulting in one of these explosive-like failures
of the tyre and rim. This warning also applies
to nitrogen inflated tyres. Ignition will not
occur in the nitrogen atmosphere, but the
pressure buildup from the heat of welding may
be sufficient to cause a blowout severe
enough to injure or kill. It is recommended to
scrap the part if heat is necessary to repair
any rim component.
Section 160-0050
SM - 218
11