International Harvester Company 15D-2 Operator's Manual page 28

OPERATION
6. First install the strut trunnion that is
angled to the rear of the tractor.
7. Install the other strut trunnion to its
bracket on the C-frame. If necessary, adjust
the upper strut to align the strut trunnion with
the strut trunnion bracket.
8. Level the blade so that when the blade
is resting on the ground, one corner does not
dig in more than the other.
If only a small
amount of adjustment is required, this may be
accomplished by adjusting the upper struts.
9. To raise one end of the blade, lengthen
the upper strut on the side to be raised. To
lower one end cf the blade,
shorten the upper
strut on the side to be lowered.
10. After the leveling the blad~ raise the
blade above the ground about 12 Inche s , Adjust
the upper struts to a "NEUTRAL" position (no
compression or tension); so that the blade con-
necting pins are free in their brackets.
Changing the Angle of the Blade'
1. To change the angle of the blade, when
it is already angled away from the straight po-
sition, raise the blade a few inche s above the
ground.
2. Remove the strut trunnion from its
bracket on the other side, and swing the strut
assembly all the way out.
3. Proceed as previously outlined under
"Angling the Blade,"
if it is desired to make
the blade sidecast in the opposite direction.
4. If it is desired to position the blade
st raight ac ros s the front of the tractor, angle
the blade until it is straight. Maintain the
blade in a level position during the process of
angling.
5. Move either strut assembly until the
assembly contacts the C-frame. .
•
CAUTION: The blade will drop on the
. side where the strut is extended due to
the los s of balance.
6. Move the strut assembly on the other
side of the blade until it contacts the C-frame,
and level the blade.
7. Assemble this strut trunnion into its
trunnion bracket on the C-frame.
8. Assemble the strut trunnion on the
opposite side into its trunnion bracket on the
C-frame.
If necessary,
adjust the upper strut
to align the strut trunnion with the trunnion
bracket.
9. Level the blade, so that when the
blade is resting on the ground, one corner
does not dig in more than the other. If only
a small amount of adjustment is required, this
may be accomplished by adjusting the upper
struts.
10. To raise one end of the blade, length-
en the upper strut on the side to be raised.
To lowe r one end of the blade, shorten the up-
per strut on the side to be lowered.
11. After leveling the blade, raise the
blade above the ground about 12 inches. Adjust
the upper struts to a "NEUTRAL" position (no
compression or tension); so that the blade con-
necting pins are free in their brackets.
Tilting the Blade.
1. To tilt the blade, raise the blade about
a foot above the ground.
2. Remove the st rut trunnion from its
bracket on the side to be raised, and position
the strut close to the C-frame.
3. Adjust the opposite side to get the de-
sired tilt by shortening the upper strut. Adjust
this strut to tilt the blade about half of the de-
sired tilt. Always adjust the side being lowered
first, so that change of balance will not cause
the loose strut assembly to swing out and cause
unexpected damage.
4. Retu rn to the s ide of the t racto r on
which the strut assembly was disengaged, and
lengthen the upper strut until the strut trunnion
can be inserted in its bracket on the C-frame.
NOTE: Do not tilt the blade in excess of
12-inches tip to tip.
5. After tilting the blade, raise the blade
above the ground about 12 inche s , Adjust the
upper struts to a "NEUTRAL" position (no
compression or tension); so that the blade con-
necting pins are free in their brackets.
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