PRONAR PRONAR 5110, Operator'S Manual

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Section 5: USING THE TRACTOR
5-16
EXTERNAL HYDRAULIC SYSTEM
PRONAR tractors have an external hydraulic system enabling operation with double-acting and single-acting
hydraulic cylinders and with continuous flow hydraulic fittings. The system is equipped with three (four-
option) pairs of external hydraulic outlets equipped with quick couplers at the rear of the tractor and one pair
of quick couplers at the front of the tractor on the left side beside the fuel tank.
ATTENTION:
The pair of quick couplers at the front works simultaneously with the first pair of quick couplers at
the rear of the tractor, i.e. in the event of using the quick couplers at the front of the tractor, the
pressure increases equally in the first pair at the rear of the tractor. DO NOT use both pairs
simultaneously.
All quick couplers are controlled by levers placed inside the tractor cab on the right side of the driver's
seat. By each of the levers there is a pictogram with lever setting symbols.
1
B
A
C
B*
neutral (stop); lifting;
no snap
fastening
floating lowering snap fastening
Figure 5-21 Lever 1 and pictograms of external hydraulic control system.
A – lever controlling first pair of quick couplers; B – lever controlling second pair of quick couplers; B* –
lever controlling fourth pair of quick couplers (option);C – lever controlling third pair of quick couplers;
each control lever has four following working positions:
LIFTING – pull lever to the rear, to extend attached cylinder and raise implement
NEUTRAL – push lever forward from raising setting, in order to select neutral setting and halt attached
cylinder
LOWERING – push lever further forward, beyond neutral setting in order to retract cylinder and lower
implement
FLOATING – push lever to the front beyond the lowering position. Enables free movement of cylinder in both
directions due to which equipment such as i.e. snow plough is able to follow the surface of the road.
Working setting of control lever with snap fastening enables holding lever in a given position. Locations of
snap fastening on individual control levers are shown on pictograms in the form of a symbol (Figure 5-21).
DANGER: Use the lever controlling a pair of quick couplers to work with loader in snap
fastening position may cause uncontrolled movement and as a result cause damage to
loader or pose danger to the operator.