HPA-Faip M 928 ROYAL Uso Y Mantenimiento página 69

Special instructions
Some types of wheels on the market require
special procedures and precautions which differ
from the standard procedure.
This applies in particular to the following types
of wheels:
Alloy rim wheels: some wheels have alloy rims
where the drop centre A is very small or non-
existent - fig. 11-B. These rims are not approved
by the DOT (Department of Transportation)
standards - these initials certify that tyres comply
with the safety standards adopted by the United
States and Canada (these wheels cannot be sold
in these markets).
DANGER
Take utmost caution when mounting the tyre.
The rim and/or the tyre may be damaged ac-
cidentally, with the risk of the tyre exploding
during the inflation stage.
European style high-performance wheels
(asymmetric curvature) - fig. 11-C: some Eu-
ropean wheels have rims with very pronounced
curvature C, except in the area of the valve hole
A where the curvature is less pronounced B. On
these wheels the bead must first be broken in
correspondence with the valve hole, on both the
top and bottom sides of the wheel.
Wheels with low pressure indicator system
- fig. 11-D: see the chapter on "Procedures for
wheels fitted with valve or strap-on sensors"
NB:
When working on "weak" rims (i.e. a central
hole with thin, projecting edges - see next
figure), or rims with gaps, we recommend
using the universal turntable for blind rims
accessory.
User Manual M 928 ROYAL
PRACTICAL HINTS, ADVICE
AND USEFUL INFORMATION
To read before using the M 928 ROYAL tyre
changer.
The following information is highly significant
as it facilitates the operator's job and/or helps
clarify any doubts that might arise.
• Upon demounting, over-lubrication and/or an
unusually shaped rim edge may cause the tyre
to slip on the rim, making demounting difficult.
First, try using the bead breaker disc in an upward
direction to raise the tyre. Otherwise, to speed
up the procedure simply place the manual Help
accessory between the tyre and the edge of the
rim. This will help lifting the bead quickly off the
rim so that it can be demounted (fig. 12).
11a
WARNING
Practical Hints
12
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