Great Plains 3N-4020 Operator Manual - Manual (Page 107)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 103
2013-10-29 Table of Contents Index 196-359M
Box Alignment
To check and adjust box alignment:
1. Unfold drill (see “Unfolding the Drill” on page 24)
and place a block ahead of each wing caster wheel.
Pull drill forward against blocks to rock frames back.
Pull forward until stop bolts are firmly against tool-
bars.
Refer to Figure 144
2. Check for proper alignment by running a string line
across back of drill toward outer ends of wings. For
proper alignment, outside ends of boxes (dimension
) should be 0 to 1 ⁄
4
in (0 to 6mm) ahead of inside
ends (dimension ).
Refer to Figure 143
3. To adjust box alignment, shorten or lengthen stop
bolts to change the contact point with the toolbars.
Adjust stop bolts
in or out until dimension is 0 to
1 ⁄
4
in (0 to 6mm) greater than dimension .
Note: If you have trouble getting box aligned it may be
necessary to adjust fold cylinders (see “Adjusting
Fold Cylinders” on page 101). Do not over-adjust
or you may cause fold latching problems.
Note: Box alignment, fold cylinder and tongue spacer
shim adjustments are closely interrelated and may
have to be adjusted in tandem. Adjust fold cylin-
ders to enable complete 90 degrees of travel to
latch wings and to unfold for box alignment. Then
adjust tongue shims to remove as much play as
possible in transport without preventing proper
latch operation.
Lack of proper fold cylinder adjustment will cause difficul-
ties with wheels by not allowing full rotation of caster
wheel assemblies.
Figure 143
Stop Bolt
20317
1
Figure 144
Box Alignment (wing angles exaggerated for clarity)
20326
1
A A
B B
1
A
B
1 A
B