Great Plains 3S-4000HDF Predelivery Manual - Manual (Page 30)

28 3S-4000HD
195-067Q 12/10/2009
Truss Tube Tension
The truss tubes help hold the center tool bar perpendicu-
lar to the tongue and straight under load. After some time,
slack can develop in the truss tubes.
Refer to Figure 36
Check that truss tubes
are providing a small amount of
tension to help hold draft load from toolbars. If not, adjust
truss length at front clevis ends
.
Check truss tube tension if tool bar height is adjusted.
See “Toolbar Height” on page 28
Also check wing box alignment when checking truss
tubes. See “Wing Box Alignment” on page 25.
Toolbar Height
Refer to Figure 37
Toolbar height is factory set and normally does not
require adjustment. If you tear down the drill for repair, or
if the tool bar is visibly not level, spacer washers
on
vertical pivot pins allow for a small amount of tool bar-
height adjustment.
To check tool bar height, park drill on a level surface, and
check for correct tire inflation. Measure from ground to
horizontal pivot pin
. If dimension on either side of drill
varies more than 1 ⁄
4
inch (6.4mm), adjust tool bar height.
To adjust tool bar height, reposition spacer washers .
First lower openers and set enough opener down pres-
sure to help balance frame. Raise tool bar by removing
spacer washers from top of the vertical pivot and placing
them on bottom side of pivot. Lower tool bar by removing
spacer washers from bottom of vertical pivot and placing
them on top of pivot.
Figure 36
Truss Tubes
18811
1
1
2
1
1
Figure 37
Toolbar Height
18845
1
2
2
1
2
1
2