Great Plains 2020P Operator Manual - Manual (Page 57)

4/23/2010 118-740M
55 Maintenance and Lubrication
Refer to Figure 62
8. Close and pin meter clean out.
Refer to Figure 63
9. Open and pin sliding seed tube.
Chain Tension
The seed meter drive has a spring-loaded idler
which requires no adjusting. However, chain
stretch may make it necessary to shorten the
chain.
Refer to Figure 64
For best chain tension the recommended vertical
distance between chain idlers should be not less
than 1/4 inch and not more than 1/2 inch. This
measurement should be taken with opener arms
horizontal.
NOTE: The front idler should be below the rear
idler. Be sure chain is installed with the chain
connector link retainer towards the centerline
of the opener and the clip opening (spit end)
faces the opposite way of the chain travel. Se
figure A.
Figure 62
Close and pin clean out
19192
18300
Figure 64
Seed Meter Chain Idlers
18421
Arms
horizontal
rear idler
front idler
19598
Figure 63
Open and pin sliding seed tube
Figure A
Chain retainer