INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 28 of 98
Fig. 29
2
3
1
12.6.2 Demounting
THROUGHOUT TYRE MOUNT-
ING/DEMOUNTING OPERATIONS,
CHECK THAT THE SELF-CEN-
TRING CHUCK CLAMPING PRES-
SURE IS CLOSE TO THE MAXIMUM
OPERATING VALUE (170 BAR).
Tubeless tyres can be removed in two ways:
A.
If the wheel does not present particular problems,
continuing beading operation will completely dis-
lodge the beads from the rim. The inner bead,
pushed by the disc, presses against the outer one
till it has been completely removed (see
Fig. 30
).
Fig. 30
B.
If the wheel is especially hard, it is not possible to
carry out the procedure described in point
A
. A
different procedure will be necessary: use the hook
tool and follow this sequence of operations:
• Move to work position
C
(
Fig. 8
).
• Position the tool holder arm on the outer side of the
wheel and bring forward the hook tool, inserting it
between rim and bead until it is secured to the bead
itself (see
Fig. 31
).
Fig. 31
• Move the rim away from the tool by about 4-5 cm
to avoid possible unhooking of the bead from the
same tool.
• Move to work position
A
(
Fig. 8
).
• Translate the tool outwards (
Fig. 32 ref. 2
) to al-
low easy insertion of lever (
Fig. 32 ref. 1
) between
the rim and the bead; insert lever (
Fig. 32 ref. 1
)
between the rim and the bead on the right-hand side
of the tool (
Fig. 32 ref. 2
).
Fig. 32
1
2
• Keeping the lever pressed, lower the wheel until the
edge of the rim is 5 mm distant from the hook tool.
• Turn the wheel clockwise keeping lever pressed
(
Fig. 32 ref. 1
) until the bead has gone completely
out.
7505-M002-4_B
NAV41.11N - NAV41T.11N - NAV41.13N - NAV41T.13N -
NAV41.13EI - NAV41T.13EI - NAV41.13SA - NAV41T.13SA
