CEMB USA C71_2 evo (D) - Manual (Page 19)

I 0637 - 19 GB
Err. 25 Distance between the spokes greater
than 120 degree 1. The minimum distance between the spokes where to split the
unbalance must be smaller than 120 degrees
2. Repeat the SPLIT function increasing the distance between the
spokes.
Err. 26 Distance between the fi rst selected spoke
and unbalance greater than 120°. 1. To perform the SPLIT function correctly, the unbalance must be
inside two spokes no more than 120° apart.
2. Repeat the SPLIT function selecting a spoke nearer the unbalance.
7.1 - Inconsistent unbalance readings
It may occur that after balancing a wheel, when removing it from the wheel balancer and then remounting it, the
wheel is not balanced.
This is not the result of an incorrect indication by the machine, but only of incorrect mounting of the wheel on the
fl ange, i.e. in the two mountings the wheel has assumed a different position with respect to shaft axis of the wheel
balancer. If the wheel has been mounted on the fl ange with screws, it may be that the screws have not been tight-
ened correctly in gradual criss-cross manner one after the other, or (as often occurs) holes have been drilled in the
wheel with too wide tolerances.
Small errors, up to 10 grams (0.4 oz), are to be considered normal in wheels locked with a cone: the error is normally
greater for wheels locked with screws or studs.
If, after balancing, the wheel is still unbalanced when refi tted on the vehicle, this could be due to the unbalance of
the brake drum or very often is due to the screw holes in the rim and the drum drilled with too wide tolerances. In this
case a readjustment would be advisable using the wheel balancer with the wheel mounted.
8 - ROUTINE MAINTENANCE
Before carrying out any operation on the machine, cut the power supply to the machine.
8.1 - Replacing the protection fuses
A protection fuse is fi tted on the power board, accessible by dismantling the weight shelf (see Exploded Drawings). If
fuses require replacement, use ones with an identical current rating.
If the fault persists, contact Technical Service.
NONE OF THE OTHER MACHINE PARTS REQUIRE MAINTENANCE .
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