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Section 2: Adjustments
STH2024 Spike Tooth Harrow 322-315M
12/10/18
15
Tooth Angling
Spike tooth angle is set by the tooth angle plates (#1) and
is factory-set with tabs (#2) (tabs with sharp break)
leading in direction of travel. This pulls the teeth 40
o
off
vertical. This angle is suitable for most conditions, has no
speed restrictions, usually creates a more optimal
seedbed, and provides a better flow of residue through
the teeth.
For a more aggressive spike tooth angle, (22
o
off vertical)
reverse all harrow sections at their chain connections to
positions tabs (#3) (tabs with shallow break) leading in
direction of travel.
Tooth Angling
Figure 2-3
How To Change Tooth Angle
1.
Park tractor with harrow on a level surface that is
large enough to allow room for unbolting the harrow
sections from the harrow frame, moving tractor with
harrow frame around one end of the removed
sections to the opposite side of the sections.
2. After parking tractor with harrow on a large level
surface, unfold wings and lower harrow sections to
the ground. Refer to "Unfold Wings First" and “Lower
Harrow sections Last” on page 13 for instructions.
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Direction Of Travel
Direction Of Travel
1
2
1
3
NOTE:
Do not exceed 4 1/2 MPH with tines at 22
o
.
Machine loads are much higher at 22
o
and spike
tooth harrow sections may hop on the ground.
3. Unbolt the six leading chains (#1) from pull tabs (#4).
Save nuts (#3) by installing them back on the bolts for
use later. Do not remove bolts (#2) from leading
chains (#1).
Disconnect Leading Chains
Figure 2-4
4. Unbolt the six trailing chains (#1) from angle
plates (#4). Save nuts (#3) for reuse. Do not remove
bolts (#2) from angle plates (#4).
5. Wrap trailing chains (#1) around harrow frames to
keep chains from becoming entangled in the harrow
sections as center and wing frames are pulled away.
Disconnect Trailing Chains
Figure 2-5
Refer to Figure 2-6 on page 16:
6. Pull tractor and harrow straight ahead until harrow
frames are clear of harrow sections.
7.
Pull harrow frame around one end of the harrow
sections to the other side of the harrow sections and
then back harrow frames to the harrow sections until
leading chains are above pull tabs (#5).
Refer to Figure 2-7 on page 16:
8. Connect leading chains (#2) to pull tabs (#1) with
existing nuts (#3). Tighten nuts to the correct torque.
9. Connect trailing chains (#7) to angle plates (#4) (5th
row back from pull tab (#1) with existing nuts (#6).
Tighten nuts to the correct torque.
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