Hll Pump Control - Belarus 1221.6 Operator's Manual

2.18 HLL pump control

The HLL pump switching shaft 1 (figure 2.18.1) has two positions:
- "shaft on" – the shaft 1 is turned clockwise against the stop;
- "shaft off" – the shaft 1 is turned contraclockwise against the stop.
Before turning the shaft 1 to any of 2 two positions, loosen a bolt 2 by 1,5...2 revo-
lutions and turn the shaft 1 together with a locking plate. Tighten the bolt 2.
The HLL pump activation diagram is given in fig. 2.18.1, as well as in the instruction
shield on the lower part of the cab front wall.
1 – HLL pump switching shaft ; 2 – bolt ; 3 – HLL pump activation diagram.
Note – The figure 2.18.1 shows the position "HLL pump on".
ATTENTION: THE PUMP SHALL BE TURNED ON AND OFF ONLY WITH THE
MIN. IDLE SPEED OF THE ENGINE!
In case failures in HLL occur that lead to oil leakage out of the hydraulic lift linkage,
the pump shall be turned off when moving the tractor to repair facilities.
HLL pump
Hydraulic system casing
Figure 2.18.1 – HLL pump control
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1221.6-0000010 OM