Zetor PROXIMA PLUS 90 2012, Operator'S Manual

Page: 132 / 212

131
ELECTRIC INSTALLATION
E609 G610
CHECK OF ADJUSTMENTS OF LIGHTS IN THE MASK OF THE TRACTOR
When checking the headlamps using a testing wall, the tractor shall stand on a hori-
zontal surface and the tyres inflated to the prescribed pressure. Basic vertical ad-
justment is 3.5% at unladen weight of the tractor. In horizontal direction the light
beams shall be parallel with longitudinal axis of the tractor symmetry.
I
- Distance of the testing wall from the headlamp (5m)
h
- Height of the headlamp centre above the road surface

h
- Headlamp inclination -3.5% of the testing wall distance = 17.5cm
 - Elevation of the asymmetric light picturing (15%)
ADJUSTMENT OF LIGHTS IN THE
MASK OF THE TRACTOR
Adjustment is carried out by all screws
for vertical and horizontal directions si-
multaneously. After adjustment all
springs of non-adjustment screws shall
be pre-stressed! Each headlight is ad-
justed independently. The lamp can be
replaced by its pulling out from the rear
side of the headlight parabola.