Great Plains P17917B Operator Manual - Manual (Page 27)

27 X-Press
Operating Instructions
5.4 DD Light Roll
The spacers and rings on the DD Light 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 Light
rollers. Please consult your
dealer under any circumstances
that require disassembly of these
rollers.
5.3.2 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
Maintenance of these rollers is limited
to yearly/end of season greasing of the
bearings and regular inspection to ensure
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.
5.5 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.
Cover any rubber sections before
using oil sprays. These sections
must not be oiled.
Remove any traces of oil with a
suitable cleaning agent.
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