Belarus 2022.6 Operator's Manual page 205

End of table 6.12.1
Failure,
external manifestation, cause
Conic-shaped pins of HSC hydrau-
lic cylinders are not tightened
There is clearance in steering
joints
Worn-out mechanical joints or bearings
Air presence in the HSC hydraulic
system
Break of dosing pump air tightness throughout spool end extension, socket casing -
Wear of spool sealing
Loose dosing-pump cover bolt
Damaged sealing gaskets under
the dosing pump cover bolt heads
Different minimum minimal radius of tractor turning to the left and to the right
Faulty toe-in of front wheels
Insufficient pressure in the HSC
hydraulic system due to the follow-
ing reasons:
- faulty adjustment of dosing pump
pressure relief valve (low pressure)
- faulty feed pump (the pump fails
to increase pressure because of
low efficiency factor)
Increased FDA reduction
steering torque
High pressure in the HSC hydraulic
system due to the following rea-
sons:
- Incorrect high-pressure hose connection
- locking of the back-pressure
valve or dosing pump pressure re-
lief valve (possible due to dirt ac-
cumulation)
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1
)
Considering extreme complexity and responsibility of the dosing pump from the point of view of steering
system safety, its assembly and disassembly shall be carried out only by servicing personnel of manufac-
turing company (or other authorized maintenance department), properly trained, studying dosing pump
design and service and dosing pump assembly-disassembly manuals, and provided they have all re-
quired service tools, accessories and special hydraulic stand, ensuring adjustment and check of dosing
pump parameters and operability after the repairs have been made. Otherwise, a person performing the
dosing pump assembly and disassembly, replacement of parts and components or adjustment of valves,
as well as a tractor owner, bears full responsibility for dosing pump non-operability.
Wobbling of driven wheels when moving
Tighten pin nuts
Eliminate the clearance in steering joints, as indicated
in section 5 "Maintenance service"
Replace worn-out components
Bleed air from the HSC hydraulic system by turning
the steering wheel moving guide wheels from the left-
most to the right-most position (stop-to-stop position)
for 2-3 times
gerotor pair – cover
Contact the dealer. Replacement of faulty sealing,
assembly and check of operability shall be performed
only by maintenance department in accordance with
manufacturer's instruction
Tighten the bolts with torque of 30 to 35 N·m
Replace the gaskets
Adjust toe-in of front wheels as specified in section 5
"Maintenance service"
Partial steering angle of driven wheels
Contact the dealer. Adjust the pressure relief valve for
the required pressure
formed only by maintenance department.
Contact the dealer.
unit Make repair of FDA
Breakdown of feed pump
Contact the dealer. Rinse of dosing-pump compo-
nents is required. Assembly and check of operability
shall be performed only by maintenance department
in accordance with manufacturer's instruction
205
2022.6-0000010 OM
Troubleshooting
1)
1)
. The operation shall be per-
1)