Great Plains 3P605NT Assembly Instructions - Manual (Page 5)

Great Plains Mfg., Inc.
Installation Instructions 5
08/25/2008 202-583M
Exchange 10ft (3P1006NT) Sprockets
Continuing from step 8 on page 2. On 10-foot models,
the Native Grass drive has a dedicated gearbox, at drill
right. The NG drive system uses the right rear output
shaft.
Remove 10ft Gearbox Output Sprocket
Refer to Figure 7
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 10ft 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 10ft NG Jackshaft Input Sprocket
Refer to Figure 4
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 10ft 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).
Figure 7
10-Foot Gearbox Output Sprocket
28298
1
2
21
20
U
D
F
B
L
R
14
53
1
2
21
20
1
21
14
21
Figure 8
10-Foot Jackshaft Input Sprocket
28298
13
20 52
1
2
53
21
14
53
14
20
13
20
52
20
13
2
52 53 1