PRONAR ZEFIR 85, Инструкция по обслуживанию, Страница: 56 / 88

PRONAR
E. WORKING WITH THE TRACTOR
PRONAR
46
IMPROVING OPERATIONAL PROPERTIES OF ZEFIR TRACTORS
ZEFIR tractors were equipped with variety of devices and have numerous possibilities for improving its
own operational properties, ie. increasing towing power, decreasing lost motion, and ipso facto increasing
speed, which is conclusive with lowering fuel consumption per unit of tooled area.
To these devices and these ways, one can number:
•
all-wheels drive;
•
hydraulic jack with three-point hang-up system – the fact, that machines are hung-up on the tractor
makes the rear driving axle is more loaded and thus the lost motion is decreased;
•
front driving axle weights – affecting mostly improvement of stability, in case of using relatively heavy
machine;
•
possibility of filling in front and rear wheels with liquid (water);
•
rear driving axle lock (controlled by the driver),
a) Front wheels weights (ZEFIR 85) and rear wheels weights.
In tractors ZEFIR 85 in order to additionally load front driving axle of the tractor, that is working with heavy
hung-up machines, it is allowable to mount weights – 12 pcs, 40 kg each – to the frame bracket of the tractor
(
Fig.E-23 ).
ATTENTION: In standard version the tractor is equipped with 6 pcs of weights, 40 kg each.
Do not use the tractor when coupling pins 1 ( Fig.E-23) and bolts 3 and 7 fixing weights
are not properly placed and properly tightened.
Any backlash between weights is not allowable.
Front weights must be used mostly for improving stability of the tractor when accuopling heavy (or with
gravity center moved far back) machines (tools) with rear three-point hang-up system. In case your doings
are not difficult and does not require maximum pull power, weights must be dismantled.
2
3
4 1 5
6
7
Fig.E-23 Front weights mounted to the tractor frame and rear wheels.
1 -coupling pin; 2 -front weights 40kgx6pcs (40kgx12pcs - option); 3 -screws fixing bracket to the tractor
frame; 4 -bracket fixing to the tractor frame; 5 -tractor frame; 6 -rear wheels weights (50kgx4pcs); 7 -screws
fixing rear wheels weights.
Front load does not always provide sufficient stability if the tractor moves with high
speed at uneven ground. In such circumstances you must speed down and exercise
care.
Load ought to be adjusted to tyres as well as tractor bearing power. Each tyre is
characterised with recommended bearing power, which you must not exceed.