Great Plains 3P605NT Assembly Instructions - Manual (Page 4)

Great Plains Mfg., Inc.
4 Native Grass Rate Reduction Kit
202-583M 08/25/2008
Exchange 8ft (806NT) Sprockets
Continuing from step 8 on page 2. On 8-foot models, the
Native Grass drive shares the single Drive Type gearbox,
and uses the right rear output shaft. The left rear shaft is
Main Seed box.
Remove 8ft Gearbox Output Sprocket
Refer to Figure 5
9. Loosen the bolt and relax idler .
10. Remove the existing 42-pitch chain from both the
existing right rear gearbox output sprocket:
808-271C SPKT 40B16 X 36T SPLINE BORE
and from the Native Grass jackshaft input sprocket:
808-170C SPKT 40B17 X 3/4BORE W/KW&SS
The chain may be left on the idler .
11. Remove and save the snap ring from sprocket :
800-141C SNAP RING EXT F/PEERLESS G.B.
This snap ring is reused during the installation.
12. Remove and save sprocket . Store it in the kit
case for possible future use.
Install New 8ft Gearbox Output Sprocket
13. Select one new:
808-160C SPKT 40B12 X 36T SPLINE BORE
Place this sprocket on the gearbox output shaft
where sprocket
was just removed at step 12.
14. Select one saved:
800-141C SNAP RING EXT F/PEERLESS G.B.
Secure sprocket on the shaft with the snap ring
.
Remove 8ft NG Jackshaft Input Sprocket
Refer to Figure 6
15. Loosen one or two set screws in the 17T jackshaft
input sprocket:
808-170C SPKT 40B17 X 3/4BORE W/KW&SS
16. Remove and save the key:
168-127D 3/16 X 1 KEY
The key is re-used during this installation.
17. Remove sprocket . Store the sprocket in the kit
case for possible future use.
Install New 8ft NG Jackshaft Input Sprocket
18. Select one new:
808-100C SPKT 40B22 3/4B W/K.W. &SS
Place the sprocket on the jackshaft where sprocket
was just removed at step 17.
19. Select one saved:
168-127D 3/16 X 1 KEY
Insert it in the sprocket and shaft keyways.
If the shaft was moved, slide it back to the right.
20. Secure all set screws.
21. Re-mount 45-pitch chain around new sprockets
, and idler .
22. Adjust chain slack to
1 ⁄
4
in (6mm).
23. Skip to “Closeout”, step 23, page 6.
Figure 5
8-Foot Gearbox Output Sprocket
28340
1
2
21
20
U
D
F
B
L
R
14
53
1
2
21
20
1
21
14
21
Figure 6
8-Foot Jackshaft Input Sprocket
28340
13
20 52
1
2
53
21
14
53
14
20
13
20
52
20
13
2
52 53 1