Great Plains PD8070 - Manual (Page 8)

Great Plains Mfg., Inc.
8 Update Kit
402-231M 02/02/2007
Row Unit Chain Idler Upgrade
Remove Old Idler Pulleys
Refer to Figure 16, Refer to Figure 17, and the PD8070 Parts Man-
ual
For each row unit, locate the spring-tensioned idlers
at the back left of the parallel arms:
43. Use a tool to rotate the idler assembly . Lift the
chain off the meter drive sprocket .
44. Remove and save two each:
NUT HEX WHIZ 5/16-18 PLT
and one:
PLATE, IDLER RETAINER.
Note: Although you can dismount the chain from the
idler, if you leave it in place, there will be no ques-
tion about chain routing during re-assembly.
45. Remove two each:
IDLER ROLLER
BUSHING, IDLER PIVOT
The old rollers are not re-used.
Note: Although the old and new bushings are the
same part number (404-146D), the old bushings
are not re-used. If they are still in satisfactory
condition, retain them as service spares.
Install New Idler Pulleys
Refer to Figure 16, Figure 17, and the PD8070 Parts Manual.
Note that Figure 2 depicts both the old (split type) and the new
(solid) idler pulleys.
For each row unit:
46. Select two each new:
404-146D BUSHING, IDLER PIVOT
817-713C CHAIN IDLER
47. Place a bushing and idler pulley over each
bolt on the idler weldment .
48. Select two each saved:
NUT HEX WHIZ 5/16-18 PLT
and one saved:
PLATE, IDLER RETAINER.
49. Place the plate over the bolts and secure
with the nuts . Make sure bolt heads are flush
against idler weldment .
50. Use a tool to rotate the idler assembly into ten-
sion. Re-mount the chain on the meter drive
sprocket
.
Figure 16
Row Unit Chain Idler
17658
1
2
1
1
2
56
54
61
53
53 15
Figure 17
Idler Assembly
26010
1
15 53
20
61
54
55
52
56
3
15
20
15 20
55 52
56
54
54 55
56
3
1
2