8.3
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 all points of the machine listed in “8.2 Lubri-
cation”.
• Check the metering wheel (fig. 29) 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.
• Check all clamping constructions on the coulter beam for
tightness.
• Check the coulters for smooth pivoting.
• In case disc coulters are used, check the adjustment of the
scraper (sufficiently clear of the discs and out of the tines’
reach).
• Check for smooth pivoting of the coulter’s (standard
models) return valves.
• Check both the air hoses and hydraulic hoses for bends and
cracks.
• Check V belts for condition and pressure (dismount
protection shield). V belt pressure should be so adjusted
that each belt can be pushed in about 18 mm by applying a
force of 50 N (5 kg) in the centre, between the pulleys (fig.
30).
• Check the six tyres of the POLYLINER front tank (fig. 31)
for correct pression. Minimum tyre pression is 150 kPa
(1,5 bar).
• Check the machine for damage and flaws.
57
29
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
30
18 mm
50 N (5 kg)
31
150 kPa
(1,5 bar)
