Summers 4-Rank Superweeder - Manual (Page 62)

SECTION 3 - SUPERHARROW 2650
3-18
SECTION ADJUSTMENT
Section down pressure can be increased or decreased hydraulically by adjusting lift cylinders and
manually by adjusting the lift cylinder adjustment bolt (8K1720, Page 3-2). Down pressure on wing
sections can be increased by replacing the top spacer tubes (8HD0510) with extra pressure spacer
tubes (8HD0520). Lower stop bushings can also be replaced with 8HD0520 to adjust individual sec-
tions so the machine raises more evenly.
CAUTION: For safety purposes, block equipment while working on it.
Adjust teeth angle for penetration and trash clearance required. Lift arms should run level to insure
equal penetration of all teeth. If all lift arms run high in back, the following adjustments can be made
to level 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 with hydraulic depth adjustment or manually (See Height Adjustment Instruc-
tions, Page 3-10).
If all lift arms run low in the back, the following adjustments can be made to level section:
1. Adjust front bar teeth only in a more aggressive setting using front adjustment bar.
2. Adjust all teeth in a more aggressive setting.
3. Lower entire section with hydraulic depth adjustment or manually (See Height Adjustment Instruc-
tions, Page 3-10).
HYDRAULIC DEPTH ADJUSTMENT (HDA) OPERATION
To set depth, install stroke control collars on 3-1/2” X 8” stroke (HDA) control cylinders located on
hitch. Collars of identical thickness must be installed on both cylinders.
Rephasing cylinders are used for hydraulic depth adjustment. Do not operate your Superharrow
2650 with HDA cylinders fully extended. Immediately after fully raising the hydraulic depth adjust-
ment cylinders, quickly lower 1/2”. If hydraulic depth adjustment cylinders are left in the fully raised
position, cylinders will settle.
If machine has settled unevenly, fully extend HDA cylinders and hold hydraulic lever until the machine
levels. Immediately after it levels, quickly lower 1/2”.
NOTE: Fully retract hydraulic depth adjustment cylinders before folding machine into transport position.
CABLE PULL BRACKETS
Under severe conditions (heavy machine draft due to deep penetration or high field speed),
cable pull brackets may slide on drawbar wing tube, resulting in improper cable adjustment.
The recommended solution for this is to relocate cable pull brackets at desired position then
weld a stop on drawbar next to cable pull brackets.