Komatsu WA100M-7, Руководство по эксплуатации и обслуживанию

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3.3 Operation Operation
3-96
WA80M-7, WA100M-7 – VENAM03001
3.3.16 Handling tyres
Precautions when handling tyres
For safety reasons, replace any tyres with one or more of the fol-
lowing defects:
 The bead wire is bent or broken.
 Excessive wear, and the carcass ply (excepting the breaker)
is exposed.
 The carcass damage exceeds 1/3 of the tyre width.
 The tyre layers are separated from each other.
 Radial cracks extending into the carcass.
 Warping or damage rendering the tyre unsuitable for use.
Tyre pressure
Check the tyre pressure before starting to work, when the tyres
are cold.
To prevent the tyre from slipping off the rim, make sure the tyre
pressure does not drop below 2 bar.
If the tyre inflation pressure is too low, there will be overload; if it
is too high, it will cause tyre cuts and shock burst.
As a general principle for visual inspections, the deflection ratio
of the front tyre (deflection/free height) should be as follows:
Deflection ratio = (H – h)/H x 100
For carrying normal loads (horizontal boom position): a
pprox. 15–25%.
When digging (rear wheels off the ground): approx.
25–35 %.
When checking the tyre pressure, also check for cracks, peeling,
and abnormal wear. Remove nails, chunks of metal, and other
foreign particles from the tyres.
Remove fallen rocks from the working area. Clearing the work-
space prolongs the service life of the tyres and increases the prof-
itability of the machine.
Sidewall
Tread
Belt
Carcass
Bead
GK032224
H = unloaded tyre
h = loaded tyre