External Hydraulic Circuit Controls Function; Setting Oil Flow Through Quick Couplers - Zetor FORTERRA HD Series Operator's Manual

External hydraulic circuit controls function

(N) - Neutral position. Outlets to quick coupler (A) and (B) are closed and oil in the connected hydraulic
device is blocked. Control (I) is locked in this position.
By moving the control from position (N) to the front, there is a gradual growth in the flow of pressurized oil to
a quick coupler (A), quick coupler (B) is connected with the waste. With maximum flow, the movement of
control faces increased resistance. After overcoming the increased resistance you can move the control to
(a) position, where the control is locked.
(a) - Floating position. Both quick couplers (A) and (B) are connected with waste and oil can flow freely in
both directions. Moving the control to (a) position is signalized by a lit control .By moving the control from (N)
position in backward position, there is a gradual increase in the flow of pressurized oil to the quick coupler
(B), quick coupler (A) is connected with the waste. With maximum flow, the movement of control faces an
increased resistance. After overcoming the increased resistance, the control can be shifted to (b) position in
which the control is locked.
(b) - a position where there is a stable flow of oil in a quick coupler (B) with an adjustable flow capacity of
10% to 100% of pressurized oil flow and the possibility of the pressurized oil flow time limit (0.5s to
unlimited).
Controls (II), (III) and (IV) have the same functions.

Setting oil flow through quick couplers

If the control (I) is in (b) position (the position where there is stable flow of oil in the quick coupler (B)
revolving control can be used to:
(1) set a time interval, after it elapses, the flow of pressurized oil to a quick coupler (B) is closed. By control
(1), time interval can be set from 0.5s (backstop of control anticlockwise) to 1 min, at the place of backstop of
control clockwise is a stable, time unlimited flow.
(2) set flow capacity of 10 per cent (backstop control anticlockwise) to 100% (backstop control clockwise) of
pressurized oil flow.
Controls (II), (III) and (IV) have the same functions.
HYDRAULIC SYSTEM
FHD14N065
FHD14N054
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