Tufline TW6 Series, Руководство оператора, Страница: 24 / 32

21 Adjustment
ADJUSTMENTS PRIOR TO FIELD TEST
These adjustments can be made when the harrow is completely assembled and attached to
the tractor.
1. Adjust until the rear blades touch the ground when the front blades are about 2” above the
ground.
2. Fine tune this adjustment to obtain equal penetration by the front and rear gangs and to stay
bilize the direction and side shift of the harrow as well as leveling across the pass being cut.
3. Most operating problems are caused by unequal pressure and penetration of the front and
rear gangs. Turn the adjusting screw clockwise to lower the rear and counter clockwise to raise
it. Recheck adjusted length of springs to be sure they haven’t unlocked.
FIELD TEST & ADJUSTMENTS
Your harrow should be ready for use after proper assembly and lubrication. As in any new
machine, all bolts and nuts should be checked to insure they are tight prior to use. (See bolt torque
chart for details.) Pay special attention to axle nuts and gang hanger bolts. If the harrow has been in
storage for a lengthy period of time, it is recommended that it be lubricated prior to use. It is important
that only one adjustment be made at a time and then tried between each adjustment. Remember
each adjustment affects another; therefore, extreme care should be used when adjusting. Keep in
mind that any disc with
7 ½” spacing is primarily a pulverizing disc and will perform better in tilled soil. Normally a blade
spacing of 9” or 10 ½” is recommended for cutting untilled soil.
Each trial run should be made with the tractor in the same gear and approximately the same RPM.
Changing discing speed while attempting to adjust will result only in excessive time and labor loss due
to changing conditions. Be sure that the tractor drawbar is pinned or locked in one position prior to
use.
While making your first trial run, observe the disc closely as it is traveling. It should be level from the
front to rear at it travels. Insure that the depth control or transport lock arm is unpinned and free be-
fore adjusting up or down on the leveling rod. Screwing the adjusting rod in the tube (shortening the
assembly) will lower the front gangs in order for them to penetrate more. After making the necessary
adjustments, the disc should pull level with both the front and rear gangs penetrating the soil at ap-
proximately the same depth.
Now observe the soil behind the disc. It should be level and smooth. If after making the above ad-
justments the disc leaves a water furrow in the center (example: ), it would indicate that the front
gangs are more aggressive than the rear gangs. Conversely, if the disc is ridging, (example:__ __),
this would indicate that the rear gang is more aggressive. To correct this, either decrease the angle of
the rear gangs or increase the angle of the front gangs.