COATS ProGuard Leverless Plus Tire Changer - Manual (Page 20)

Operation Manual - COATS PRO GUARD PLUS - 20
13.0_POSITIONING THE VALVE
Fig. 6 shows a rim in the form of a clock, so that, following the various
processing phases described hereafter, (chapter entitled Mounting and
Demounting), you can position the valve and its sensor correctly so as
not to damage them.
To avoid damaging the valve and the pressure sensor, if
the latter is installed, you must always arrange the valve
in the position indicated, following the instructions when
mounting and demounting the tire. fi g.6
fi g.6
14.0_TIRE CLASSIFICATION
LOW PROFILE tires (UHP) are those in which the height (H) and the width (C) have a ratio lower than 0.5 (i.e. low
profi le series 45 stands for a ratio of H/C = 0.45).
For tires to be considered as LOW PROFILE (UHP), they must also have a maximum speed code of equal to and/or
higher than V.
RUN-FLAT tires are those which, even when they have no internal pressure, allow you to continue to drive the vehicle
for a preset number of miles and at a preset speed. These parameters change from one manufacturer to another.
The market currently offers 2 different types of RUN-FLAT tires:
- Those with REINFORCED SIDE (SELF-SUPPORTING) where, thanks to a different mix and a reinforced structure,
the shoulder of the tire is able to bear the weight of the vehicle even when the pressure in the tire is zero.
- Those with INTERNAL SUPPORT have a ring inside the rim that bears the side of the tire when there is no pressure
inside it. The internal support may be made of plastic (Pax-System) or of metal (Support-Ring).
The tire changer is able to handle all types of LOW PROFILE (UHP) and all types of RUN-FLAT tires with REINFOR-
CED SIDE; for other types, refer to the specifi c instructions of the dedicated accessories, if available.
The mounting and demounting procedure is the same, be it a RUN-FLAT tire with REINFORCED SIDE (SELF-SUP-
PORTING) or a LOW PROFILE tire (UHP).
It is of crucial importance to follow the instructions very carefully in order to avoid irreparable
damages to the tire, which could compromise the vehicle’s safety.
CAUTION
CAUTION