Hll Valve Group Section Control (Remote Cylinders) - Belarus 2022.6 Operator's Manual

2.19 HLL valve group section control (remote cylinders)

The control handles are located on the right side console of the cab. The handles
have the following positions: "uplift", "neutral", "lowering", "floating".
Handle 3 (figure 2.19.1) controls the left section of the valve group as viewed along
tractor movement (left rear outlets of the hydraulic system). It can be fixed in positions
"floating" and "neutral". When set into positions "lowering" and "uplift", the handle shall be
held with a hand, when released the handle automatically returns to "neutral" position.
Handle 2 controls the middle section of the valve group (middle rear outlets of the
hydraulic system). It can be fixed in positions "floating" and "neutral". When set into posi-
tions "lowering" and "uplift", the handle shall be held with a hand, when released the han-
dle automatically returns to "neutral" position.
Handle 1 controls the right section of the valve group (right rear outlets of the hy-
draulic system). It can be fixed in positions "floating", "neutral" and "uplift". When set into
position "lowering", the handle shall be held with a hand, when released the handle auto-
matically returns to "neutral" position. For the valve group of "BOSCH" company handle 1
automatically returns to "neutral" position from the "uplift" position when the automatic re-
turn pressure is reached (from 17,5 to 19,5 MPa). Your tractor can be equipped with a
valve group of the hydraulic unit RP70-1523.1 where handle 1 does not have the mecha-
nism of automatic return from the "uplift" position. In this case, after performing the uplift
operation, handle 1 shall be returned to the "neutral" position manually.
а) for tractors with the integrated block of
"BOSCH" company
1, 2, 3 – handles to control HLL valve group sections; 4 – instruction plate with the
diagram of HLL valve group section control.
For tractors with the integrated block of "BOSCH" company:
- setting of valve spindles into the position "uplift" is performed by shifting the lever
from the "neutral" position forward as viewed along tractor movement;
- setting of valve spindles into the positions "floating' and "lowering" is performed by
shifting the lever from the "neutral" position backwards.
For tractors with the hydraulic unit RP70-1523.1:
- setting of valve spindles into the position "lowering" and "floating" is performed by
shifting the lever from the "neutral" position forward as viewed along tractor movement;
- by shifting the lever from the "neutral" position backwards – valve spindles are set
into the position "uplift".
The instruction plate with the diagram of HLL valve group outlets connection to out-
er consumers is attached to the tractor valve group, as specified in figure 2.19.2 or on cab
right glass. The valve group outlets are equipped with fast couplings with color protective
covers.
Figure 2.19.1 – HLL valve group section control
b) for tractors with the hydraulic unit RP70-1523.1
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2022.6-0000010 OM