PRONAR ZEFIR 85, Servicing Instruction

Page: 31 / 88

PRONAR
D. CONTROL AND CHECK ELEMENTS
PRONAR
21
STEERING SYSTEM
The tractors
ZEFIR equipped with hydrostatic steering systems with metering pump characterized by
possibility of steering the tractor when the engine is not running. The system possesses the hydraulic pump
(which is not switched off) driven from the tractor engine. A driver has the possibility to change of angular
inclination and change of position along the axis of steering column for its comfortable location by the
operator.
1
The pull rod 1 ( fig. D-12 ) serves for changing angular position, pull it
and hold it. In order to change the position of steering wheel for the
required position, release the pull rod and cause interlocking by means
of small motions. The mechanism of change of angular position has 4
positions (within the range of stroke) in which the steering-wheel is
blocked. You can select one from 5 positions co 5
°
within the range from
25
°
to 40
°
.
Fig. D-12 Pull rod of interlocking for inclination of steering wheel (column).
Change of position of steering wheel along the axis requires ( fig. D-13 ):
•
unscrewing the cover of steering wheel axis together with screw 1 ;
•
setting up the steering wheel in the selected (optional) within the
regulation range of 100 mm;
•
zakręcenia pokrywki wraz ze śrubą 1 (ręcznie).
Fig. D-13 Changing position of steering wheel along its axis. 1 – cover of steering wheel axis together with
screw
BRAKES
Working brake (basic brake)
During driving jazdy on roads brake pedals should be interlocked with the pawl 1 ( fig. D-14 )
1
In field works,when there is necessity of making turns of small radius
(returns) you may brake, after unlocking the pawl, the left or right wheel,
pressing one of pedals respectively.
You must brake fluently, without jerks, pressing the pedal to the end and
without stopping in indirect positions. Do not keep leg on pedals without
need because it leads to accelerated wear of friction lining of brake disks.
Fig. D-14 The pawl intelocking pedals of working brake (unlocked position)
When driving on roads the pawl must interlock pedals of working brake (foot-brake).
Parking brake (emergency brake)
The parking brake was installed at left side of the seat. It serves for immobilization of the tractor
during stoppage.
1
It is forbidden to use the brake to stop the tractor during driving.
An exception is an emergency situation when during driving, without
previous fault symptoms, the working brake (basic brake) will be
dameged.
The parking brake is swittched on through pulling the lever
upwards. In order to release the brake lever you must slightly pull
the lever upward and then press the push button
1 located at the
end of the lever and lower the lever fully downwards. ( fig. D-15 )
Fig. D-15 Parking brake.