INSTRUCTION, USE AND
MAINTENANCE MANUAL
GB
Page 18 of 68
All wheels must be clamped from the inside.
Clamping on the central flange is always safest.
NOTE: for wheels with grooved rims secure the
wheel so the groove is facing outward compared to
the mandrel.
If it is not possible to clamp the rim in the hole of the
disc, clamp on the bead seat close to the disc.
TO SECURE WHEELS WITH ALLOY
RIMS ADDITIONAL PROTECTIVE
JAWS ARE AVAILABLE. THEY AL-
LOW YOU TO WORK ON THE RIMS
WITHOUT DAMAGING THEM. THE
PROTECTIVE JAWS ARE FITTED
ONTO THE MANDREL’S NORMAL
JAWS BY MEANS OF A BAYONET
CONNECTION.
To clamp the wheel proceed as follows:
- Place the wheel in vertical position not far from the
mandrel;
- Use the lever (
Fig. 12 pos. C
) or (
Fig. 13 pos. E
) to
position the coaxial mandrel with the wheel centre,
in order to make the jaws edges skim the wheel edge;
- Adjust the opening of the self-centring mandrel
through the corresponding control (
Fig. 12 pos. A
)
or (
Fig. 13 pos. C
) according to the type of rim to
be locked;
- Operate the control (
Fig. 12 pos. A
) or (
Fig. 13 pos.
C
) until the wheel is completely clamped.
- Check both that the rim is clamped and centred
correctly, and that the wheel has been raised above
from the floor, so that it does not slip during the
operations which follow.
KEEP ON OPERATING RIM CLAMP-
ING CONTROL, UNTIL REACHING
THE MAXIMUM OPERATING PRES-
SURE (130 BAR).
THE CAREFUL LUBRICATION OF THE TYRES
BEADS IS RECOMMENDED, IN ORDER TO PRO-
TECT THEM FROM POSSIBLE DAMAGES AND
TO FACILITATE MOUNTING AND DEMOUNTING
OPERATIONS.
AFTER COMPLETION OF TYRE
MOUNT/DEMOUNT OPERATIONS
DO NOT LEAVE THE WHEEL
CLAMPED ON THE SELF-CEN-
TRING CHUCK AND NEVER LEAVE
IT UNATTENDED ANYWAY.
7503-M002-6_B
NAV26HW - NAV26HW.S - NAV26HW.ST
12.5 Wheel clamping with locking ring nut
(NAV26HW.ST)
FOR WHAT CONCERNS THE DI-
MENSIONS AND WEIGHT OF THE
WHEEL TO BE LOCKED, MAKE
USE OF A SECOND OPERATOR
WHO MUST HOLD THE WHEEL
INTO VERTICAL POSITION, IN
ORDER TO ENSURE SAFE OPERA-
TIVE CONDITIONS.
When handling wheels weighing more than 500 Kg a
fork-lift truck or a crane should be used.
MAKE SURE THAT RIM CLAMPING
IS DONE PROPERLY AND THAT
THE GRIP IS SAFE, TO PREVENT
THE WHEEL FROM FALLING DUR-
ING MOUNTING OR REMOVAL
OPERATIONS.
Fig. 16
To clamp the wheel proceed as follows:
- Place the wheel in vertical position not far from the
mandrel;
Use the lever (
Fig. 12 pos. C
) to position the coaxial
mandrel with the wheel centre, so that the threaded
pin is placed at the same height of the central hole
of the rim;
- Insert the rim on the threaded pin (and the well
placed outwards);
- Lock the rim on the mandrel by using the star flange
(
Fig. 16 pos. 1
) and make sure that drive pin goes
into the right hole for the tyre;
