Komatsu PC15MRX-1 Operation And Maintenance Manual page 115

OPERATION
USING RUBBER SHOES
Prohibited works
Do not carry out the following types of work.
Carrying out operations and steering on crushed rock, extremely rough hard rock, steel beams, scrap iron, or
near the edges of steel plates will cause damage to the rubber shoes.
In places such as river beds where there are large numbers of large and small boulders, the stones may get
caught and damage the rubber shoes or make the shoes come off. If dozing operations are carried out when
the shoes are slipping, this will reduce the life of the rubber shoes.
Be careful not to get oil, fuel, or chemical solvent on the rubber shoes. If such a substance should get on the
shoes, remove it immediately. Furthermore, do not travel on road surfaces where oil has collected.
When putting the machine into long-term storage (3 months or more), store the machine indoors where it is
protected from direct sunlight or rain.
Do not use the machine in high-temperature areas, such as areas where there is burning wood, steel plates
that have been left under the hot sun, or places where asphalt has been laid.
Do not move the machine with the crawler on one side raised using the work equipment. This will cause dam-
age to the rubber shoes and may cause the rubber shoes to come off.
Long life operations
To avoid damage to the rubber shoes, be careful of the following points when carrying out work.
Avoid carrying out counter-rotation turns on concrete surfaces.
Avoid making sudden changes in direction. This may cause premature wear or damage to the rubber shoes.
Avoid operating the steering when traveling over places where there is a big difference in height. When travel-
ing over obstacles or places where there is a difference in height, drive the machine at right angles to the
obstacle to prevent the shoes from coming off.
If the machine has been raised using the bucket, lower it slowly.
Avoid doing work with materials that produce oil when crushed (soya beans, corn, or remains of vegetables
squeezed for oil); or wash the machine after use.
Avoid handling materials that will attack the adhesion of the steel core, such as salt, ammonium sulphate,
potassium chloride, potassium sulphate, or calcium superphosphate; or wash the machine after use.
The adhesion of the core will be attacked by salt, so avoid using the machine in coastal areas.
When handling salt, sugar, wheat, or soya beans, if there is any deep cut in the rubber shoes, these sub-
stances may get into the lugs or cut portion of the rubber. Always repair the rubber before use.
Do not carry out work that involves scraping against walls or concrete embankments.
Rubber shoes slip extremely easily on snow or frozen roads. Be careful not to slip when traveling or working
on slopes.
The properties of rubber shoes change when working in extermely cold places, and this will reduce the life of
the rubber shoe.
Because of the properties of rubber, use the rubber shoes within a range of -25°C to +55°C (-13°F to +131°F).
When carrying out bucket operations, be careful not to damage the rubber shoes with the bucket.
To prevent the rubber shoes from coming off, pay careful attention to the following when carrying out operations.
Even when the tension is correct, be extremely careful when carrying out operations.
Avoid operating the steering when traveling over curbs,
rocks, or places where there is a big difference in height
(more than approx. 20cm (8 in)). When traveling over such
objects, always travel at right angles to the object.
MACHINE OPERATIONS AND CONTROLS
3-61