2022.3-0000010 OM
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b) It is necessary to check voltage terminal “ ” of the generator with gauges en-
gaged (SA10 switch key is in the first position “I”) and with the motor stopped. Voltage
should be from 0.8 to 1.2 V, in case it differs correct the trouble in added resistance circuit
R1 (located in SU).
ATTENTION: TEST OF GENERATOR OPERABILITY BY MEANS OF BATTERY
DISCONNECTION, CONNECTION OF TERMINAL “+ ” TO TRACTOR FRAME WITH THE
MOTOR RUNNING CAN RESULT IN GENERATOR BREAKDOWN!
7.15.2.3 Auxiliary AB (GB2) charge is nil with the motor running
Absence of charge (nonoperability of voltage converter UZ1) of auxiliary accumula-
tor battery GB2 can show through low frequency of engine cranking by starter while other
tractor systems and units are properly operating.
Other types of failures and troubleshooting methods are possible:
1. Indicating lamp (red led lamp) on value indicating scale in on-board circuit in in-
strument cluster 2 does not light up after engine start.
It indicates failure of charging rate in auxiliary AB (GB2). Perform the following ac-
tions:
- assure oneself of generator G1 operability as indicated in cl. 7.14.2.2.
- assure oneself of ground on the converter housing UZ1.
- test fuse element FU34 operability with specific power of 20 in the converter
housing UZ1.
- test voltage on terminals “ ” and “- 2” UZ1 in reference to the converter housing
with the motor running and generator properly operating G1. Voltage shall be from 13.5 to
15 V; if voltage is below the specified value restore corresponding circuits “ ” and “- 2”
from generator to voltage converter.
- measured voltage on terminals of auxiliary AB (GB2) in 5 minutes after engine
start-up, the voltage should be within the range from 13.5 to 15 V. If it is below the required
value check circuit continuity from terminal “+ 2” of the converter to terminal”30” of the
starter. If the circuit does not operate properly replace the converter UZ1.
Note – Test charging rate from voltage converter can be executed by means of mul-
timeter connection in current measurement mode (measurement range is up to 10A) in-
stead of fuse element, installed on the converter housing. Test should be carried out after
some period of operation, when charging rate is decreased in converter output circuit up to
. Meanwhile in converter output circuit current of 10A should be displayed (depending
on AB charging rate (GB2).
2. Indicating lamp in voltmeter scale in instrument cluster 2 does not light up after
engine start when instruments are engaged with motor not running.
Perform the following:
) check presence of ground on the converter housing, if there is no “ground” –
draw a wire from tractor transmission housing.
b) provide “ground” for terminal “ ” of the converter UZ1, if indicating lamp does not
light up check circuit “ ” for continuance within the range from the converter UZ1 to in-
strument cluster 2, if the circuit is operational check instrument cluster 2 or replace
the converter UZ1.
3. Main reasons for nonoperability of properly operating converter UZ1:
- voltage on terminal “ ” of generator is below 5.5 V;
- voltage of on-board circuit is below 12.4 V;
- voltage of on-board circuit exceeds 15.6 V;
- overheating VC at temperature exceeding 110 ° .
- load current at terminal “+ 2 (28 V)” is below 15 m (bad contact in charging cir-
cuit, terminal corrosion of converter fuse block installation);
Note – Current decrease in charging circuit of auxiliary AB (GB2) is below 15 m
can give evidence of standard accumulator charging, when this happens the converter
shuts down and charge indicating lamp lights up in voltage indicator of ob-board circuit.
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Содержание 1822.3
Страница 1: ...BELARUS 1822 3 1822 3 2022 3 2022 3 2022 3 0000010 OM OPERATOR S MANUAL 2012 https tractormanualz com ...
Страница 325: ...2022 3 0000010 OM 324 Figure 7 13 1 RLL electronic control system cables https tractormanualz com ...
Страница 326: ...2022 3 0000010 OM 325 Figure 7 13 2 Electrical circuit diagram of RLL control system https tractormanualz com ...
Страница 353: ...2022 3 0000010 OM 352 SERVICE BULLETINS https tractormanualz com ...
Страница 354: ...2022 3 0000010 OM 348 Annex compulsory https tractormanualz com ...
Страница 356: ...2022 3 0000010 OM 350 Annex B compulsory https tractormanualz com ...