Front Lift Linkage Control; Hll Pump Control - Belarus 2022.6 Operator's Manual

If light failures are detected, the troubleshooting annunciator shows a failure code,
but the system remains controlled and is not blocked. In case of light failures, the RLL con-
trol system operates improperly – there is no correct soil sensing. After elimination of the
failure, the troubleshooting annunciator goes out.
If the system detects a failure related to any group of complexity, the following ac-
tions shall be taken:
- read the code;
- stop the engine;
- contact your dealer and inform him of the read code in order to eliminate the prob-
lem;
- after your dealer eliminates the problem, start the engine and if there are no fail-
ures, get down to work.
If the RLL control panel PU-03 manufactured by "Izmeritel" plant is installed (trou-
bleshooting annunciator 6 (figure 2.17.2), RLL control handle 1), troubleshooting of the
RLL electronic control system is the same.

2.17.5 Front lift linkage control

The front lift linkage, installed against order, is controlled by handle 2 or 3 (figure
2.19.1) which in their turn control the second and the third sections of the hydraulic valve
group, respectively.
Note – Connection of the FLL control to the first section of the hydraulic valve group
having the fixed position "uplift" is not reasonable, as this section is intended to control the
hydraulic units of coupled machines having a hydraulic drive with permanent oil circulation
(hydraulic motor).

2.18 HLL pump control

The HLL pump is located on the coupling clutch body to the left.
The HLL pump switching shaft 1 (figure 2.18.1) has two positions:
- "shaft on" – the shaft is turned clockwise against the stop;
- "shaft off" – the shaft is turned contraclockwise against the stop.
Before turning shaft 1 to any of two positions, loosen bolt 3 by 1,5...2 revolutions and
turn shaft 1 together with locking plate 2. Tighten bolt 3.
1 – shaft; 2 – locking plate; 3 – bolt; 4 – pressure adjustor in the pneumatic system.
Note – Figure 2.18.1 shows the position "HLL pump on".
ATTENTION: THE PUMP SHALL BE TURNED ON AND OFF ONLY AT THE MINI-
MAL IDLE SPEED OF THE ENGINE!
In case of failures in the HLL that lead to oil leakage out of the hydraulic lift linkage,
the pump shall be turned off when moving the tractor to repair facilities.
Figure 2.18.1 – HLL pump control
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2022.6-0000010 OM