Practical Hints, Recommendations And Important Information - Cormach PUMA Manual De Uso Y Mantenimiento

UK
Preliminary checks
Check on the pressure gauge of the ilter regulator + lubricator
unit that there is a pressure of at least 8 bar.
Check that the machine has been hooked up to the electrical
mains correctly.
h
ow to deCide the side of the wheel from whiCh to demount the
See ig.8
Find the position of the drop centre A on the wheel rim. Find
the largest width B and the smallest width C.
The tyre must be demounted or mounted with the wheel po-
sitioned on the turntable with the side with the smallest width
C facing upward.
s
peCial 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 - ig. 8a. These
rims are not approved to DOT (Department of Transportation)
criteria - the marking which certiies the tyre s conformity to the
safety standards adopted by the United States and Canada
(these wheels cannot be sold on these markets).
DANGER
Take great care when mounting the tyre. The rim and/or
the tyre may be damaged accidentally, with the risk of the
tyre exploding during the inlation stage.
European style high-performance wheels (asymmetric
curvature) - ig. 8b: some European wheels have rims with
very pronounced curves C, except in the area of the valve
hole A where the curvature is less pronounced B. On these
wheels the bead must irst be broken in correspondence with
the valve hole, on both the top and bottom sides of the wheel.
Wheels with low pressure indicator system - ig. 10c: see
"Procedure for wheels with valve or band-type sensors"
N.B.:
When working on weak rims (i.e.
with central well with thin, projecting
edges - see side), or rims with gaps,
we recommend use of the universal
closed centre rim lange accessory.
tyre
PRACTICAL HINTS, RECOMMENDATIONS AND
IMPORTANT INFORMATION
WARNING
Must be read before using the PUMA.
The following information is very important. It will sim-
plify the operator's job and/or clear up any doubts which
might arise
p
raCtiCal
• During the tyre demount operation with wheels that have
particularly stuck beads, as well as carefully lubricating the
disk and the bead area, we suggest to insist turning the rim in
the opposite direction (anticlockwise) while keeping the disk
pressed and making the penetration as for the normal opera-
tion that is carried out by turning the rim clockwise.
• During demounting, over-lubrication and/or an unusually
shaped rim edge may cause the tyre to slip on the rim, making
demounting dificult. 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 allow the bead to be
lifted quickly off the rim so that it can be demounted (ig.34).
• During demounting, if the tool is unable to completely overturn
the tyre bead to allow demounting to start, the tyre bead may
still be, or just have been, inserted at 180° to the demounting
zone. In this case it is essential to restore the ideal condition,
with the tyre bead inside the well of the rim. This operation
can be assisted with any tool you wish (clamp provided, pliers,
bead presser or lever) (ig.34A).
• During demounting, if the tool is unable to keep the tyre bead
engaged to allow demounting to start, the tyre bead may still
be inserted on the underside. Use the bead breaker disc in
an upward direction both to break the tyre bead again and to
help to maintain a grip on it (ig. 34B).
r
eCommendations
To ensure the perfect condition of the rims, we recommend to
replace the plastic inserts beneath the head (ig.36A-B) every
2 months, or sooner in case of excessive wear and tear. The
inserts for the replacement are supplied with the machine.
i
nformation
Any noise heard when the tool head engages with the tyre is
normal. The noise is made by the mechanical return of the tool
and not because the tool has hit the rim. Even if the tool does
touch the rim as the tyre is engaged, this will not damage the
rim in any way. The pressure applied is very low.
If you wish to prevent this noise, simply press the bead breaker
disc harder against the bead when picking it up.
WARNING
Bead breaking is well known to be a dangerous operation.
It must be carried out in accordance with the instructions
below.
Car, off-road vehicle and van wheels
h
ints
33