Summers 3-Rank Superweeder - Manual (Page 48)

7-2
SECTION 7 – OPERATION - ALL MACHINES
HARROW SECTION ADJUSTMENT
Harrow sections should be attached to lift arms as shown
in figure 3, page 2-3.
To adjust sections for deep or shallow penetration, see fig-
ures 33 and 34. SECTIONS NOT RIDING LEVEL: If sec-
tions ride high on front, place top pull chain in bottom hole on
lift arm bracket. If section rides low in front, place top pull
chain in top hole on lift arm bracket.
SUPERHARROW ADJUSTMENTS
SECTION ADJUSTMENT
Section down pressure can be increased or decreased hy-
draulically by adjusting the lift cylinders.
Adjust teeth angle for penetration and trash clearance re-
quired.
Lift arms should run level to insure equal penetration of all
teeth. If one lift arm runs higher than the other lift arm on a
section, replace the top spacer tube 8HD0510 with PN
8HD0520 on the lift arm that runs high. If all lift arms run high
in back, the following adjustments can be made to level the
section:
1. Adjust front bar teeth only in a less aggressive setting
using front adjustment bar.
2. Adjust all teeth in a less aggressive setting.
3. Raise entire section (See Height Adjustment Instructions,
Page 3-3).
If all lift arms run low in back, the following adjustments can
be made to level section:
1. Adjust front bar teeth only in a more aggressive setting
using front bar.
2. Adjust all teeth in a more aggressive setting.
3. Lower entire section (See Height Adjustment Instructions,
Page 3-3).
ALWAYS, be sure transport locking pins are in the lock
position when making adjustments on the machine when
in the raised or transport position.
SUPERWEEDER ADJUSTMENTS
LIFT ARM ADJUSTMENT
The Superweeder can easily be leveled (front rank of tines
running the same depth as the rear rank) by hydraulically
adjusting the lift arms so they appear level from the operator’s
seat. This should be done while the machine is moving for-
ward at normal operating speed. IMPORTANT: The lift arms
should never ride on the harrow sections as this will damage
the lift arms and sections.
DEPTH ADJUSTMENT - MANUAL
It is recommended that the Superweeder be pre-set in the
top set of adjustment holes (See Fig. 35). Maximum S-tine
penetration at this setting, with S-tines rotated completely
forward, will be 3-1/2”. By mounting bar bushings in bottom
set of adjustment holes, S-tine penetration is increased 1-1/
2” to a maximum of 5”.
DEPTH ADJUSTMENT - HYDRAULIC
The penetration depth of S-tines can also be controlled hy-
draulically. Extending the S-tine controlling cylinders (2-1/2”
x 8”) rotates the S-tines rearward for shallower penetration. Full extension of the cylinders completely retracts the S-tines
from the soil. To uniformly set the penetration depth of S-
tines across the entire machine, use the stroke control ad-
justment found on the rod-end of the cylinders. Restricting
the stroke on the S-tine controlling cylinders affects penetra-
tion depth according to the following chart.
STROKE CONTROL CHANGE IN
(dist. stop screwed out) PENETRATION DEPTH
1” 1/4” - 1/2”
2” 1/2” - 3/4”
3” 1” - 1-1/2”
Machine must not be adjusted to exceed a maximum S-tine
tillage depth of 5” in loose soil conditions. In hard soil condi-
tions, S-tines must not exceed 3” in depth.
NOTE: Additional stroke control requires depth controls
segments (not supplied) to be added on cylinder shaft.
However, such additional control may possibly affect
the vibrating action of S-tines.
Fig. 33 Teeth Set for Shallow Penetration Fig. 34 Teeth Set for Deep Penetration