International Harvester Company 15D-2 Operator's Manual page 27

OPERATION
BULLDOZER
Tilting the Blade
1. Raise the blade about a foot above the
ground.
2. Remove the strut locking pin from the
strut lock loop (refer to Illust. 18) and extend
the upper strut on the side of the blade to be
raised. Adjust this strut to tilt the blade about
half of the desired tilt.
3. Adjust the upper strut on the opposite
side of the blade by shortening it to obtain the
balance of the desired tilt. Reinstall the strut
locking pins.
NOTE: Do not tilt the blade in excess of
12 inches tip to tip.
Pitching the Blade
1.
To pitch the blade forward (decreas-
ing the suction angle), raise the blade a few
inches above the ground. Extend the upper
struts on each side of the blade.
NOTE: Do not extend beyond the marker
groove in the eyebolt.
2. To pitch the blade backward (inc r-ea s -
ing the suction angle), the upper struts must
be shortened.
NOTE: When increasing or decreasing
the suction angle, the upper struts must be
extended or shortened equally on both sides.
3. After making the adjustment, secure
each strut with the locking pin so that it will
not rotate.
Leveling the Blade
To level the blade, lift the blade a few
inches above the ground, and adjust both upper
struts so that the gap between the shoulder of
the eyebolt, clevis and the upper strut body is
1-1/16 inches on each end. (Refer to lliust.
21.) This will position the blade in its neutral
pitch position. If the blade is not level a half'
,
turn of the upper strut in either direction will
level the blade.
BULLGRADER
Angling the Blade
1. To angle the blade from the straight
position, raise the blade a few inches above
the ground.
2. Remove the strut trunnion from the
strut trunnion bracket (on the side of the blade
that is to be angled to the rear) and position
it do se to the C-frame. .
3. Remove the strut trunnion from the
opposite side of the blade, and swing the strut
assembly out as far as it will go.
•
CAUTION: The blade will drop on the
side where the strut is extended due to
the loss of balance.
4. Return to the starting side of the blade,
and swing the strut assembly outward.
5. Level the blade and maintain this level
position while angling the blade.
NOTE: Perform the following operations
in the order given to maintain the balance of
the blade during the installation of the first
strut trunnion.
Continued on next poge.
lIIust. 32
Blade angling positions.
25