GREAT PLAINS 3S-4000, Operator'S Manual

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3S-4000, 3S-4000F, 3S-4000HD, 3S-4000HDF Table of Contents Index Maintenance and Lubrication 85
2018-06-19 Table of Contents Index 195-442M
Truss Tube Tension
The truss tubes help hold the center tool bar
perpendicular to the tongue and straight under load.
After some time, slack can develop in the truss tubes.
Refer to Figure 90
Check that truss tubes are providing a small amount
of tension to help hold draft load from tool bars. If not,
adjust truss length at front clevis ends
.
Check truss tube tension if tool bar height is adjusted.
See “
Tool Bar Height ” on page 85
Also check wing box alignment when checking truss
tubes. See “
Wing Box Alignment ” on page 82.
Tool Bar Height
Refer to Figure 91
Tool bar 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 (6.4 mm), adjust tool bar
height.
To adjust tool bar height, reposition spacer washers .
First lower openers and set enough opener down
pressure 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 90
Truss Tubes
18811
1
1
2
1
2
Figure 91
Tool bar Height
18845
1
2
2
1
2
1
2