9
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DAILY MAINTENANCE
Lubrication
∗
Drive
chains
∗
Linkages on folding and articulated seed drills
∗
Marker
linkages
Check
∗
Rotation of all units
∗
Operation of electronic control box
∗
Cleanliness of axial gauging rollers, since soil adhering to them prevents the
scrapers from operating correctly (where stainless steel axial rollers are
concerned).
At the end of each day
∗
Empty the seed trays through their rear drawer.
∗
Run the seed drill empty in order to clear all the cells.
Night-time moisture actually degrades the seed coating, which can clog up the
discs.
∗
Seed drill fitted with microgranulators: see page 19
Replacing discs and shear pin
Replacing discs:
∗
Remove side cover
∗
Remove ejector (2 bolts)
∗
Remove beta clip
∗
Replace
disc
∗
Replace clip, ejector and cover.
Shear pin
Each disc is retained on its shaft with a 2 mm dia. beta clip; this clip is made of
special steel and is not the same as those which can be bought across the
counter. It acts as a shear pin in the event of excessive force being required to
rotate the disc: crushed seeds, non-standard seed coating or foreign body.
∗
Remove the side cover held on by 4 nuts
∗
Retrieve the pieces of the sheared clip
∗
Investigate and eliminate the cause of impeded rotation
∗
Fit a new 2 mm dia. beta clip, replace the side cover.
Using chicory discs
Fitting a chicory disc
∗
First remove the ejector (Diagram 1) and the beet disc
∗
Fit the chicory disc
∗
Ensure the beta clip is still in good condition
∗
Replace the ejector with its 2 bolts as it was fitted previously
