Great Plains Frame-Mounted Coulters - Manual (Page 3)

Great Plains Mfg., Inc.
Installation Instructions 3
02/28/2007 249-137M
Remove Coulter Swing Arm
Refer to Figure 4
8. Remove and save one each:
PIN COTTER 1/4 X 2 PLT
WASHER FLAT 1 1/4 SAE PLT
9. Remove and save one each:
NUT HEX JAM 3/4-10 PLT
NUT HEX FLANGE LOCK 3/4-10 PLT
SWING ARM BUSHING
FERT COULTER SWING ARM
10. If the existing coulter bushing:
BUSHING 1.50ODX1.25IDX2.94
happens to come loose, it is not saved or reused.
Dismount Casting
Refer to Figure 5
11. Remove and save two each:
NUT HEX 7/8-9 PLT
WASHER LOCK SPRING 7/8 PLT
HHCS 7/8-9X2 3/4 GR5
12. If any offset mount plate is present:
OFFSET COULTER MOUNT PLATE
note its orientation for re-installation.
13. Remove the old casting:
MACH.MOUNT CASTING COULTER
The old casting is not saved or reused, but it con-
tains a part that is reused.
14. Remove and save the spring rod from the casting:
COULTER SPRING ROD WLDMT
15. It may be necessary to remove the old zerk:
GREASE ADAPT 1/4-28M X 1/4 TB
in order to remove the rod. The zerk is not saved or
reused.
Figure 4
Remove Swing Arm
26098
64
62
70
67
68
71
52
68
67
62
64
70
52
71
Figure 5
Remove Old Casting
26098
56
58
66
63
59
63
66
51
53
63
66
59
51
53
56
58