Corghi ET88 Manual De Uso página 72

- spacer for use with van and off-road vehicle wheels having central hole requiring
the use of the large cone.
The procedure for centring a car wheel using the parts listed above is similar to
that described for the truck cones.
There is also a universal flange for centring car wheels with closed rim or with
central hole smaller in diameter than the shaft (46mm).
It must be used as follows:
- remove the threaded part of the shaft (threaded hub);
- fit the flange on the balancing machine shaft, fixing it with the screw provided;
- fit the pins of the RFT caliper in two adjacent fixing holes on the rim and measure
the distance between them (fig. 12);
- arrange the threaded pins of the quick flange so that there is one pin for each
hole in the wheel and the distance between them is that measured earlier using
the RFT caliper.
In case of wheels with six holes, three pins have to be used.
- Pre-tighten the nuts of the connecting-rod pins so that there is just a little
resistance when they are turned.
For correct centring it is essential not to tighten the nuts completely at this stage,
to allow them to settle into position when the wheel is clamped onto the flange
later.
- Fit the wheel on the flange and secure it with the nuts provided.
- Definitively tighten the nuts which secure the connecting-rod pins.
SWITCHING ON THE MACHINE
Switch on the machine using the switch on the left-hand side of the body (I fig. 4).
The balancing machine performs a checking test, and if no malfunctions are noted
it emits a beep and displays the logo and the personalisation data, after which it
awaits input of the wheel's geometrical data.
Press any key to display the image of the imbalance values (fig. 13); the status
initially active will be:
- truck wheel balancing function (indicator in the top left-hand corner of the
screen);
- balancing mode active: dynamic (DYN);
- values displayed: 000 000;
- display in steps of 50 grams (1 ounce).
At this point, the user may set the data of the wheel to be balanced or select one of
the programs available.
72 ET 88 operator's manual