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OPERATION AND MAINTENANCE
Spike & Double Reel
1. The Spike and Double Reel Harrow consists of two
rows of spring-loaded spike harrow bars and
spring-loaded reels that operate independently. This
harrow will perform best in clean dry ground with little
or no residue.
2. Spike tooth bars have adjustable spring pressure and
tooth angle, with backup protection. Heavy spring
pressure and increased tooth angle will make the
spike harrow more aggressive. Lower tooth angle
and light spring pressure will make the harrow less
aggressive and should be used for wetter and
increased residue conditions.
3. To change the spike tooth angle
raise the finisholl so the harrow is off the ground.
Remove the clevis pin at the lower end of each spike
bar arm. Moving the pin to a higher adjustment hole
will make the spike teeth stand more vertical and be
more aggressive. Moving the clevis pin lower will
allow the spike tooth to lay flatter and not as
aggressive. Set the clevis pin adjustment the same
for each end of the spike bar. Front spike bars may
be set different than rear bars if desired.
The chain hooks on the spike bar arms are offset to
4.
allow the spring pressure to be changed
. The heavier setting should work for
Figure 4-26
most conditions. To change the spike harrow spring
pressure, first remove the pivot bolt through the
spike harrow clamp and lower both spike bars for
each section to the ground. Insert a ¾" bolt/pin (not
provided) through the harrow arm assembly hole.
NOTE
There is still spring tension on the harrow arms.
Remove the rear arm pivot bolt, holding the bottom
5.
of the arm to leverage the spring against the ¾"
assembly bolt/pin. Remove the front arm pivot bolt.
Remove the 3/16 retaining cotter pin from the both
spring hooks. Remove the chain hooks and turn the
offsets the desired setting. The closer the offsets
face each other the lighter the spring setting, the
farther apart, the heavier the setting. Reinstall the
cotter pins. Connect the spring to the front harrow
arm and reinstall the pivot bolt. Connect the spring
to the rear harrow arm, and insert the top of the
rear arm against the assembly pin. Pull the lower
end of the rear harrow arm back until the rear pivot
bolt can be installed. Reconnect the spike bar clamp
to the harrow arms with the pivot bolts. Remove
assembly pin when finished.
4-26
See Figure
4-25,
See
6. Use the rear spring assembly to adjust the height of
the of the double reel
Initially set the reels to run approximately even with
the bottom of the finisholl sweeps. To adjust the reel
height, loosen the locking nut against the front of the
spring assembly and the locking nut against the 2-1/2
dia adjustment pin. Rotate the head of the
adjustment bolt to raise or lower the reel assembly.
Retighten the locknuts against the spring end and the
spring pin. Make sure the reel heights are set so the
reels are even across the back of the finisholl.
The double reel assembly may also be adjusted for
7.
front-to-rear pitch
See Figure 4-25
should run approximately level front-to-rear while
working in the field. If ground conditions are very
loose, or the reels try to push dirt, it may be
necessary to run the front reel slightly higher than
the rear reel. To change the reel pitch, lower the
reels so they are just above the ground to prevent
uncontrolled falling. Remove the two round head
square neck ½ x 1-1/4 screw and flange head nuts
from each arm assembly. Rotate the double reel
assembly to the desired pitch, and reinstall the
screws. Adjust the reel pitch the same for all harrow
sections.
1/2 X 1-1/4 SQUARE NECK SCREWS,
1/2 FLANGE NUTS
Figure 4-25: Spike Tooth Angle & Reel Adjustment
assemblySee Figure
4-25.
. The reels
LOCKING NUT
SPRING
ASSEMBLY
CLEVIS PIN
DOUBLE REEL ASSEMBLY
F-756-0321
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