Great Plains Full Press Drill Post Conversion User Manual
Page 4
104-010M
4/9/2004
Great Plains Mfg., Inc.
Post Conversion Update
4
Refer to Figure 5
16. Attach the U-joint post side plates (1) to oppo-
site sides of the old pivot post (2). Place the
plates with the their holes down and extend-
ing out in the same direction as the round piv-
ot tube (3) on top.
17. Measure 31 7/16" from the top edge of the
round pivot tube (3) to the centerline of the U-
joint post side plates (1). Measure back 1/8"
from the front edge of the old pivot post (2) to
the centerline of the U-joint post side plates
(1).
18. Clamp U-joint post side plates (1) to the old
pivot post (2) and recheck your measure-
ments before welding.
19. Insert the 6 3/4" long post pivot bolt (4)
through the holes in the U-joint post side
plates (1). The bolt should move freely, if not,
check your measurements.
20. Hold the 1/4" square key (5) against the plate
(1) and head of bolt (4). Tack weld it to the
plate. This will keep the bolt from turning while
tightening the nut later.
21. Remove the bolt (4).
22. Weld U-joint post side plates (1) and 1/4"
square key in place using a weld with high
tensile strength.
Refer to Figure 6
23. After allowing the spindle hub assembly (1) to
cool, remove any dirt or foreign material
which might have gotten inside.
24. Pack the top bearing cone (2) with wheel
bearing grease and insert it in the top of the
spindle hub assembly (1).
25. Install the grease seal (3) and insert the left-
hand U-joint spindle (4).
26. Pack the bottom bearing cone (5) with wheel
bearing grease and insert it in the bottom of
the spindle hub assembly (1).
27. Install the 7/8" flat washer (6) and thread on
the 7/8" slotted hex nut (7). Snug the nut (7)
while moving the U-joint spindle (4) back and
forth. After the snugging the nut back it off
about 1/2 a turn. Line one of the slots in the
nut (7) with the hole in the U-joint spindle (4)
and insert the cotter pin (8).
28. Install the hub cap (9) on the spindle hub as-
sembly (1).
Figure 5
Old Pivot Post
20221
Figure 6
Spindle Hub Assembly
20222