Section 3: Adjustments
DH3510 & DH3512 Disc Harrow 322-251M
12/7/18
23
Refer to Figure 3-4 & Figure 3-5:
5. Determine which hole to select in the stabilizing bar
when setting disc gangs to the desired angle.
Front Disc Gang Angles
Figure 3-4
Rear Disc Gang Angles
Figure 3-5
Refer to Figure 3-3 on page 22:
6. Pull or push on lever handle (#4) to move disc gangs
forward or rearward until selected hole in stabilizing
bar aligns with pin (#3).
7.
Remove adjusting lever (#4) and place stabilizing
bar (#2) on pin (#3).
8. Replace hairpin cotters (#1).
9. Repeat steps 1 to 8 for the front gangs.
10. Store adjusting lever under one of the stabilizing bars
when completed. Make sure all hairpin cotters (#1)
have been replaced.
Disc Scraper Adjustments
Refer to Figure 3-6 (Right Rear Disc Gang):
1.
Loosen bolt (#1) and adjust furrow filler scraper (#2)
and scraper (#4A) as close to the disc blades as
possible without touching.
2. Tighten 1/2" -13 GR5 carriage bolt #1 to the correct
torque.
16.5
o
19.5
o
15
18
o
21
o
Frame Pin Hole
Holes Not Used
For Setting
Gang Angles
Holes Not Used For
Setting Gang Angles
25999
16.5
o
13.5
o
18
o
15
o
12
o
Frame Pin Hole
Holes Not Used
For Setting
Gang Angles
Holes Not Used For
Setting Gang Angles
25999
NOTE:
Rear furrow filler scraper (#2) is optional and
may not be included with your Disc Harrow.
Disc Scraper Adjustment
Figure 3-6
3. Loosen remaining bolts (#3) and adjust remaining
cup scrapers (#4B) as close to the disc blades as
possible without touching.
4. Tighten each 1/2" -13 GR5 carriage bolt #3 to the
correct torque after adjusting the cup scraper (#4B)
associated with that bolt.
5. Repeat scraper adjustment steps 1 to 4 on all four
disc gangs.
In-Field Adjustments
Final adjustments will need to be made while operating
the Disc Harrow in the field. Make sure you have properly
hooked-up to your tractor, lubricated the Disc Harrow,
made a full bolt inspection, and completely read this
manual before going to the field.
!
WARNING
To avoid serious injury or death:
Wear gloves and be careful when working around or with Disc
blades. The blade cutting edge is sharp.
26529
IMPORTANT:
•
Damage to the harrow can occur if it is not lifted out
of the ground before making sharp turns.
•
Make sure tractor drawbar is pinned in the center
position and tractor 3-Point arms are positioned so
that they will not make contact with the Disc
Harrow hitch.
•
The Disc Harrow tires can be raised off the ground
to add weight to the disc gangs. However,
DO NOT
add any additional weight to the Disc Harrow in an
attempt to make the disc blades sink into the
ground deeper. Instead, make additional passes
over the worked area.
•
Each adjustment affects another. Therefore, make
only one adjustment at a time and then test that
adjustment before continuing.
•
Make each trial run with tractor in the same gear
and at the same speed. Varying tractor speed
while making adjustments will only make adjusting
the Disc Harrow harder.
