Great Plains 2525A Operator Manual - Manual (Page 75)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 71
2013-06-04 Table of Contents Index 118-999M
Seed Tube Maintenance
Refer to Figure 72 and Figure 71
Clean inner sliding seed tube if it will not slide.
Replace inner sliding seed tube if you see any visible
cracks.
Sliding Seed Tube Replacement
To replace inner sliding seed tube, follow these steps:
1. Make sure seed box and meter are empty (page 66).
2. Lift lock ring above lower swept boot .
3. Lift boot off meter inlet , and slide inner tube down
and out of outer tube .
4. Loosen bottom clamp . Remove swept boot from
inner tube.
5. Inspect outer sliding seed tube for wear and replace
if necessary. Loosen top clamp
and pull outer slid-
ing seed tube from seed box grommet .
6. Fit new outer sliding seed tube into seed box grom-
met. Set the distance
from seed box grommet lip
to the top of the clamp to:
3 ⁄
16
in (4.7mm).
7. Set the reveal of the outer sliding seed tube above
the rubber grommet to:
minimum:
1 ⁄
2
in (12.7mm)
maximum:
5 ⁄
8
in (15.8mm)
Tighten clamp.
8. Fit inner sliding seed tube into swept boot and
tighten clamp.
9. Place lock ring over inner tube. Insert new inner slid-
ing seed tube inside outer sliding seed tube. Fit
swept booth over meter inlet. Secure with lock ring.
Boot and Grommet Maintenance
Periodically check seed meter swept boots and seed
box grommets for weathering and cracking. Replace
as necessary. Check sliding seed tubes at this time.
Figure 71
Upper Seed Tube Components
29835
B
A
6
7
8
1
2 3
5
6
4
7
8
A
A
Figure 72
Lower Seed Tube Components
29834
1
4
2
3
5
6
B
B
B
3
8