Belarus 3522.5, Operator'S Manual

Page: 325 / 340

3522.5-0000010 OM
326
Continuation of the Table 7.3b
Failure, external manifestations,
cause
Troubleshooting
Spontaneous lifting of RLL (lifting without a command received from the instrument panel
or remote control buttons)
Deadlock of the lift spool of a regula-
tory section
ЕН
R-23LS
Failure elimination shall be carried out directly on the
tractor, without the need of the integral unit disassem-
bly. To eliminate the failure perform the following:
- clean the work area;
- remove the coil 17 (Figure 7.3.7), unscrew four
screws 9 fastening the lower electromagnet 13 and
then withdraw the electromagnet;
- withdraw the lift spool 14 and the spring 15, rinse
the mentioned components and the bore in the section
housing 10;
- assemble the lift valve in reverse sequence.
Hydraulic system overheat
Loss of the LL hydraulic system effi-
ciency Replace the pump
Lighting up of the lift indicator located
in the RLL control panel after the lifting
is completed means that the RLL posi-
tion sensor is not adjusted Perform the RLL position sensor adjustment according
to the Table 7.2 (code 22)
Lighting up of the lift indicator located
in the FLL control panel after the lifting
is completed means that the FLL posi-
tion sensor is not adjusted Perform the FLL position sensor adjustment according
to subsection 3.16.5 “Hydraulic system of FLL control”
When the system is warmed up (not less that 45°
С
), the lamp, indicating the LL
hydraulic system pump filter clogging, lights up in the CECS
The filter is clogged
Replace the filter
Oil foaming in the LL and HSC hydraulic systems tanks
Air inflow in the hydraulic system suc-
tion line Tighten the suction line clamps. If the failure can not be
eliminated, replace the oil suction line
Low level of the oil in the LL and HSC
hydraulic system tank Refill the oil up to the mark on the oil gauge glass
Failure diagnostics signaling device located on the RLL control panel or in the FLL
control panel reports numerical codes
Damage in electrical wiring, solenoids,
corrosion of terminals, sensors failure
(force or position) of RLL ECS or FLL
ECS
Eliminate the failure according to the subsection 7.2
“Possible failures in the electronic control system of
RLL and FLL guidelines for troubleshooting”
1 – pressure limiting valve; 2 – HLL pump.
Figure 7.3.6 – Pressure limiting valve installation
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