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ADJUSTMENTS/
MAINTENANCE
STEERING STOP ADJUSTMENT (CONTINUED)
FIGURE 23
REAR WHEEL TREAD ADJUSTMENT — FIGURE 24
The rear wheels are normally assembled in the narrow tread
position, shown in Figure 24. The wheels can be turned on the
hubs for a wider tread. The wide tread provides greater stability
on hillsides and on rough terrain.
Remove the wheel lug nuts, turn the wheels around with the
pa, valve stems inward and re-assemble on the hub.
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123 x 10.50 x 12 = ы
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FIGURE 24
assemble the wheels on opposite sides of the tractor with the
valve stems
turned
inward.
Interchanging
the wheels
is
necessary to maintain proper direction of rotation for traction
tires.
HYDRAULIC LIFT OPERATION
The Hydraulic Lift Control Lever is located on the control console,
Shown in Figure 2. It is a four position lever to perform four func-
tions, "МІР", "'HOLD'', "DOWN", and "FLOAT. The normal
-15-
Figure 27 shows the components of the hydraulic lift system.
The hydrostatic transmission charge pump supplies the oil flow
from the rear axle transmission oil reservoir. Oil flow to and from
the cylinder is controlled by the valve. The back end of the
cylinder is anchored to the rear rock shaft. The forward end of
the cylinder is pinned to the lower end of the bell crank.
When the cylinder is extended or retracted, the bell crank pivots
and raises or lowers both the front and center rock shafts at the
same time through the front and center rock shaft linkages
Shown in Figure 27. The connection to the center rock shaît is
made through the slotted hole which allows the center rock shaft
to move up and down, allowing the mower to float independent of
the flotation provision in the hydraulic system.
The center rock shaft flotation spring provides mower flotation.
The tension on the spring can be increased by pulling the chain
shown in Figure 25 and latching a chain link in the notch in the
back of the tractor frame. This spring should always be in use
when the mower pan is used.
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TOC
CENTER ROCK SHAFT FLOTATION
SPRING ADJUSTING CHAIN
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FIGURE 25
HYDRAULIC LIFT REAR ROCK SHAFT
The tractor comes with a lift sensor device so that the front and
center rock shafts can һе operated independently of the rear
rock shaft while utilizing only one hydraulic cylinder. The alter-
nately latched, split lift linkage system holds the front and center
rock shafts in their raised positions while the rear rock shaft is
operated by the cylinder or vise versa.
This allows a rear
mounted attachment to be used without removing the front or
center mounted attachments and vise versa.
To make the rear rock shaft operational, move the Hydraulic Lift
Control to the "ИР" position and hold it there until the cylinder
is fully extended. Place the selector knob in the front notch,
Figure 26.
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