International Harvester Company 15D-2 Operator's Manual page 25

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• Bracket sheave
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Cable control unit
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Cable reeving diagram
(Madel 15D.3 and 15(;.3 ~nly).
Removing cable from a reel or coil with-
out revolving it re suits in a twist as each turn
Ls taken off. If this twist is not removed and
the cable straightened befo re being placed un-
der tension, kinks are apt to result.
To prevent kinking the cable when remov-
ing it from a reel, revolve the reel and take
the cable off in the same way it was put on the
reel. Put a shaft through the center of the reel
and jack it up so the reel will revolve freely.
Pull the cable straight ahead, keeping it tight
to prevent it from loosening on the reel. A
board held against one flange may be used as
a brake to keep the reel from revolving too
fast.
To prevent kinking a cable when uncoiling
it, remove the ties and roll the coil along the
ground so that the cable lies straight. There
will be no twist or kink in the cable if these
instructions are followed. (Refer to Illust. 26.)
Lubrication
Lubricate all lubrication points as outlined
in the "SCHEDULED MAINTENANCE" section.
OPERATION
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Control handle positions'
(Models 15D.2 and 15G·2only.).
Control Handle Positions
(Models 150·2 and 15G·2 Only)
The positions of the operating control
handle are the same for the bulldozer and bull-
grader. The four positions of the handle,
~amed in order from the rear, are: 1, RAISE;
2, HOLD; 3, I.::.OWER; 4, FLOAT. Operation
follows the natural reaction; pull back on the
handle to raise and push forward to lower.
NOTE: After using the "RAISE" or
"LOWER" position, the control handle will
automatically return to "HOLD" position. Hold-
ing the hydraulic control handle in "RAISE" or
"LOWER" position for a five minute interval
upon reaching the limit of piston travel, will
not damage the hydraulic system. However.
extended holding in these positions will produce
excessive heat. which may affect blade perfor-
mance. and cause the pump to overheat. The
correct procedure is to switch to the "HOLD"
position at the limit of travel if it is desired to
hold this position for several minutes.
Raise: To raise the blade. pull the con-
trol handle back as far as it will go. In this
position, oil forces the piston and rod back to
the top of the cylinder.
Hold: To hold the blade in any fixed posi-
tion. move the control handle to the second
position. This blocks the oil in the cylinde r s
and holds the pistons and blade stationary •. The
blade is held in place until r el.eased,
Continued on n.xt ,.. ••
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