Scraper installation – Great Plains NTA2007 Operator Manual User Manual
Page 173
Great Plains Manufacturing, Inc.
Appendix C - Option Installation
169
2012-01-05
166-372M
Scraper Installation
Optional 121-781A carbide disc scrapers are not factory
installed.
Start with row 1 (left-most row unit):
1.
Remove one or both disc blades to gain safe access
to the mount
. Note the position of bushings and
spacers for correct re-assembly (page 96).
2.
Remove the existing slotted scraper.
Refer to Figure 150
3.
Select one:
802-079C HHCS 3/8-16X1 1/4 GR5
If Seed-Lok™ is present, or also being mounted,
also select one:
804-013C WASHER LOCK SPRING 3/8 PLT
Place the lock washer on the bolt.
4.
Select one:
804-012C WASHER FLAT 3/8 SAE PLT
Place this flat washer on the bolt.
5.
Select one:
890-357C SCRAPER-SPRING LOAD-AIR DESIGN
If the blades were not completely pre-assembled,
select one each:
K7090 AIR DESIGN SCRAPER LH SIDE
K7091 AIR DESIGN SCRAPER RH SIDE
K7096 SPACER AND WASHER ASSEMBLY
K7093 AIR DESIGN SCRAPER 15LB SPRING
Nest one side (
,
) behind the other. Connect the
spring
between the sides, using the small top
holes. Insert the spacer
from the front, with the
narrow raised centre to the rear (in the large blade
holes).
6.
Insert the bolt
through the scraper blades (
,
)
and spacer
.
7.
If no Seed-Lok™ is present, select one each:
804-013C WASHER LOCK SPRING 3/8 PLT
:
803-014C NUT HEX 3/8-16 PLT
Secure the scraper assembly to the scraper
mount
using the lock washer
and nut
.
8.
If a Seed-Lok™ is present (not shown), secure the
scraper assembly to the Seed-Lok™, using a
threaded hole present in the Seed-Lok™. The
supplied hex nut
is unused.
Figure 150
121-781A Scraper Installation
19000
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