2022.3-0000010 OM
327
Continuation of Table 7.14
Failure, external manifestations,
cause
Troubleshooting
Overheating of HLL oil in course of tractor operation with an implement with
hydraulic oil motor coupled
Wrong choice of hydraulic motor for
the implement. Hydraulic motor oil
consumption should be by 10…15%
below pump output flow at engine
operating speed
Adjust engine rpm or change hydraulic motor or in-
stall hydraulic fluid cooler on hydraulic motor drain
Implement delivery pipe or drain
pipe have restricted flow passages
Replace pipes by the recommended ones accord-
ing to subsection 5.5 “Features of tractor hydraulic
system use for actuation of mover working attach-
ments and other components of coupled hydrauli-
cally operated implements and units” of this opera-
tion manual
Hydraulic motor of the implement
lost efficiency coefficient
Replace worn-out hydraulic motor
Oil drain from hydraulic motor
through active section of distribu-
tion valve
Ensure oil drain from hydraulic motor through trac-
tor spare drain
HLL pressure loss (RLL can not be lifted, pressure loss or no pressure of pres-
sure at external outputs), hydraulic system overheating does not occur
Locking of differential pressure
control valve (overload relief valve)
in access cap of integrated unit)
Perform the following actions:
- rinse the valve
- check pressure at any external output, which
should be 20.0
-2.5
MPa
- valve rinsing should be carried out at the dealers
center by specially trained personnel
Spontaneous lowering of RLL (lowering without a command received from
the instrument panel or remote control buttons)
Deadlock of the lowering valve of a
regulatory section
R -23LS (if
integrated unit BOSCH is installed)
Failure can be eliminated only by a dealer in a ser-
vice centre in the following manner:
- dismount the electro hydraulic section (E R), by
unscrewing the nuts of the stud-bolts of the integral
unit. During dismounting procedure pay attention to
integrity of the O-rings and the shuttle valve (OR
VALVE), both in the regulatory section and in the
distribution valve neighboring section;
- disassemble the lowering valve
R-23LS and
rinse its components according to subsection
7.14.3 “Lowering valve of the section
R-23LS
disassembly procedure;
- put the electro hydraulic section (E R) back in its
place
Deadlock of the lowering valve of a
regulatory section (if hydraulic unit
70-1523.1 is installed)
To eliminate failure contact your dealer
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Содержание 1822.3
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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 ...