15
Inspect connection and sub-assemblies as well. Retighten loose screwed joints.
Replace or refurbish any damaged or worn parts.
•
Working elements of the smoothing harrow can be used until they are almost entirely
worn or their performance is inefficient.
•
Use only genuine screws and nuts when replacing worn parts.
•
Always remember to tighten the screwed joints properly.
•
Replace or refurbish any damaged or worn parts.
•
Before a new work season is commenced, always add up the grease in the bearing
units.
CAUTION!
During any maintenance work, the roller must rest on the
ground. The tractor engine must be stopped.
Hydraulic system maintenance
Maintenance of the hydraulic system (Fig.4) 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 element or the hose with a new one. If the leakage occurs
outside the connector, the leaking hose must be replaced with a new one. Mechanical
damage also requires replacement of the sub-unit. It is recommended that the hydraulic
hoses should be replaced every 5 years.
If oil appears on the piston rod of the hydraulic cylinder, check for the nature of the
leakage. Check the sealing once the piston rod is fully moved out. Small leakage which
results in covering the piston rod with an oil film is acceptable (damaged wiper seal). If the
amount of oil is greater or there are oil drops, shut down the unit for the period required to
repair the malfunction (damaged sealing).
