3522.5-0000010 OM
321
Continuation of the Table 7.3
а
Error
code
Cause of suspicion and malfunction
nature
Test and elimination method
21
Low power supply voltage (less
than 11 V). Meanwhile the central
spool of the distribution valve sec-
tion spontaneously goes back to the
“neutral” position. Control by the
joystick or by the HLL POU can not
be executed. If the voltage is below
11 V and if an actuating signal is
available, the code “17” will be initi-
ated instead of code “21” until the
control is stopped
Check the power supply voltage
level in the gauge board and in the
pins 1, 4 (Figure 7.3.5) of the distribu-
tion valve socket for section. If the
voltage is below 11 V or is absent,
check the system cables for me-
chanical damage and power wires for
breakage, pins corrosion
22
High power supply voltage (more
than 18 V). Meanwhile the central
spool of the distribution valve sec-
tion spontaneously goes back to the
“neutral” position. Control by the
joystick or by the HLL POU can not
be executed. If the voltage is below
18 V and if an actuating signal is
available, the code “17” will be initi-
ated instead of code “22” until the
control is stopped
Check the power supply voltage
level in the gauge board and in the
pins 1, 4 (Figure 7.3.5) of the distribu-
tion valve socket for section. In case
of high voltage check the generator
performance
23
Clogging of the fine filter or sin-
tered metal coarse filter, or absence
of voltage on the pressure reducing
valve actuating electromagnet, or
clogging of the pressure reducing
valve. Meanwhile the central spool
of the distribution valve section
when operated by the joystick or by
the HLL POU does not move or
moves slow and not in full stroke.
The code is indicated in all sections,
receiving the actuating signal. When
the actuating signal is absent or in-
terrupted the code indication drops
out
Check the voltage level (board
network voltage), measure the coil
resistance [(5±1) Ohm at (20±3)
0
С
] of
the actuating electromagnet socket.
Rinse the sintered metal coarse filter,
located under the plug (Figure 7.3.4).
Replace fine filter, located behind the
cap (Figure 7.3.2), rinse the pressure
reduction valve
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Summary of Contents for 3522.5
Page 1: ...BELARUS 3522 5 3522 5 0000010 OM OPERATOR S MANUAL 2011 https tractormanualz com ...
Page 9: ...3522 5 0000010 РЭ 10 https tractormanualz com ...
Page 335: ...3522 5 0000010 OM 336 Service bulletins https tractormanualz com ...
Page 337: ...3522 5 0000010 OM 375 Annex B compulsory https tractormanualz com ...
Page 338: ...3522 5 0000010 OM 376 Annex B obligatory https tractormanualz com ...
Page 339: ...3522 5 0000010 OM 377 Annex C obligatory https tractormanualz com ...
Page 340: ...3522 5 0000010 РЭ Annex D obligatory 378 https tractormanualz com ...
