2122.6-0000010 OM
236
Table 6.13.1 continued
Failure
code
Possible cause and malfunction char-
acter
Method of check and elimination
26
Actuation of the central spool of
the section in position “lowering” or
“floating” took place due to jamming
of the control valve accordingly in
“lowering” or “floating” position. If
jamming of the control valve in posi-
tion corresponding to oil supply for
moving the central spool to the “up-
lift” position” takes place, then after
you start the tractor the central
spool of the section will move to the
“uplift” position
The code will disappear after the
central spool moves to the neutral
position. It is required to proceed as
follows:
-
move the central spool by
means of manual control applying
force of no more than 450 N. If it re-
quires a bigger force then the central
spool needs to be washed;
-
disassemble the compartment
with the electrical equipment of the
section. Take out the control valve of
the section and wash it;
When determining the position of
the central spool it is forbidden to ro-
tate it about the axis.
41
The supply voltage is above the
ultimate level (higher than 45V).
Hereby the central spool of the dis-
tributor section will return to the neu-
tral position by itself. Operation of
the section by joystick or OPU of
HLL is not possible. The failure code
is indicated in all sections irrespec-
tive of availability (absence) of the
control signal.
Check power supply voltage in the
dashboards and in contacts 1, 4 (fig-
ure 6.13.5) of the connector for the
distributor section. In case of in-
creased voltage check operation of
the alternator.
42
The current value in the control
valve is out of the permissible or ex-
pected range. Hereby the central
spool of the section is permanently
in the neutral position. Operation of
the section by joystick or OPU of
HLL is not possible. The code will
be indicated in faulty sections when
there is a control signal.
Disassemble the compartment with
the electrical equipment of the sec-
tion. Check the connection wire bun-
dle from the digital electronic unit to
the control valve for damages. Check
windings of the control valve for break
and short circuit. The resistance of
each shall be (7±1) Ohm at (20±3)
0
С
. If it doesn’t correspond the control
valve or the entire section shall be
replaced.
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