Great Plains P18028E Operator Manual - Manual (Page 26)

DTX
Operating Instructions
26
the assemblies are tight, and scrapers are
correctly set.
The scraper is intended to clear
dirt from blocking between
adjacent DD rings. If adjustment
to the scrapers is required ensure
that the scraper cannot contact the
spacer even under load. Regularly
inspect the spacers for signs of
wear and adjust any scrapers to
ensure no contact can be made.
5.4 DD Lite Roll
The spacers and rings on the DD Lite Roll
are held under tension by the end plates at
the outer ends of the roll tube.
Specialist equipment is required
for the disassembly of DD Lite
rollers. Please consult your
dealer under any circumstances
that require disassembly of these
rollers.
Maintenance of these rollers is limited
to yearly/end of season greasing of the
bearings and regular inspection to ensure
5.4.1 Bearing Seals
It is important when replacing the labyrinth
type bearing seals in disc hubs that the
seal is fitted the right way round. The
chamfered lip side should be at the outside
of the bearing housing, nearest the disc
arm (see Fig. 5.02). This chamfered lip
prevents dirt ingress into the housing and
also allows grease to be flushed though
when greasing.
Fig. 5.02: Correct Seal Orientation
ITEM PART NO DESCRIPTION
1 --- DISC ARM
2 P12900 NIPPLE - GREASE M8
3 P14593 HUB CASTING
4 P14594 HUB CAP
5 P12908 SPRING PIN
6 P12907 NUT CASTLE M27x1.5
7 SEAL 64x45x9.5
8 P12415 BEARING 32008 40x68x19
9 BEARING 32206 30x62x21
Chamfered Seal
5. Servicing and Maintenance
5.5 Double Disc Axles
The axles on this roller are tensioned by the
main axle through the centre of the rings
and bearings.
Specialist equipment is required
for the disassembly of Double
Disc axles. Please consult your
dealer under any circumstances
that require disassembly of these
axles.
Maintenance of these rollers is limited to
daily greasing of the bearings to flush out
dirt, and regular inspection to ensure the
assemblies are tight, and scrapers are
correctly set. The axles can be tightened
provided the bearing pillar ‘U’ bolts are
loosened to avoid preloading the bearings
as they move sideways to each other.
Ensure the bearing pillars are re- tightened
to the mainframe after this.
5.6 Preparation for
Storage
If you need to store the machine for a longer
period, observe the following points:
• Park the machine undercover if possible.
• Protect the roll / discs against rust. If you
need to spray the implements with oil, use
light, biologically degradable oils, e.g. rape
oil.