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5.4.
Securing bolts
If the plough
body meets an obstacle, the securing
bolt is shorn. After the plough is lifted for the screw
replacement, the body will not return to its original
position automatically. Rotate and position it
accordingly. The tightening torque of the breakaway
bolts should be in the range of 70
–
79 Nm.
5.5.
Gauge wheel
Check the pressure in the wheel regularly. In case of significant air loss, check the
air valve tightness. Next, have the wheel inspected by a specialised company to locate
and repair the damage. Badly damaged tyres (especially damage to the tyre profile) must
be replaced immediately.
Setting the bearing axial play.
Inspection and adjustment should be carried out every 2 years. It is recommended that
this operation be performed by a specialised workshop. The recommended play is 0.12
-
0.15 mm. Procedure:
•
Dismount the hub cover and the spring pin securing the castle nut.
•
While rotating the hub, press and tighten the castle nut.
•
Stop tightening when with a vigorous manual push there is no more than a half
-
turn
of the hub.
•
Loosen the nut partially until the hub can rotate freely and repeat the tightening
step.
•
After the repeated locking of the hub, loosen the nut a maximum 30° until the
closest possibility to secure the nut with a cotter pin is found. Mark the position
with a line.
•
From the marked position unscrew the nut a half turn, and slightly tapping on the
hub press the hub onto the nut as far as possible.
•
Keep tightening the nut until it reaches the position marked with the line.
•
Mount the hub cover.
CAUTION! During maintenance works the plough should rest firmly on the
ground and be protected against tipping over.
5.6.
Hydraulic system
Maintenance of the hydraulic system consists in visual
inspections to prove leak tightness.
Remember to insert pins into quick
-
fit connectors. If there is an oil leakage from
connections of hydraulic hoses, the connector must be tightened. If the oil leakage is not
remedied, replace the component or the hose with a new one. Mechanical damage also
requires replacement of the component. It is recommended that the hydraulic hoses be
replaced every 5 years.
If oil appears on the piston rod of the hydraulic cylinder, check for the nature of the
Shear
bolt