9.3 Intermittent maintenance
Intermittent maintenance has to be carried out:
• at the start of the sowing season;
• if the machine is put out of use for a longer period of
time (end of sowing season);
• when the machine is used very intensively during the
sowing season.
- Grease the PTO shaft (see fig. 41).
- Grease the profiled tubes of the PTO shaft.
- Grease the pivot points of the marker arms and wheel
supports (fig. 43).
- Grease the right-angled profiled tubes of the drive shafts A
(fig. 44).
After the complete disassembly from the machine of a shaft,
care should be taken during re-assembly that the outer
profiled tube is fitted to the highest connection.
- Grease the shaft ends B (fig. 44) to which the drive shafts
are fitted.
- Check the chain of the metering wheel for wear and tear,
for which purpose the cover on top of the chain casing (fig.
45) has to be dismounted.
- Oil the chain of the sprocket wheel.
- Check the chain tension. Move the bearing block higher up
(untighten nutsA-fig.44)ifthechain needs tightening.
- Check the metering wheel for smooth turning.
- Check the marker discs for smooth and play-free turning.
- Check if the PTO shaft telescopes smoothly. A damaged
PTO shaft may cause excessive wear and tear to the
machine and tractor.
- Check all bolts and nuts for tightness. Tighten loose
bolts/nuts by applying the forces listed in the schedule
below.
59
M6 M8 M10 M12 M14 M16 M20 M24
Nm 10 25 50 85 135 215 410 710
kgm 1,0 2,5 5,0 8,5 13,5 21,5 41,0 71,0
43
44
45
A
A
B
A
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