Ariens 931000 User Manual download pdf (Page 15)

ADJUSTMENTS/ MAINTENANCE

STEERING STOP ADJUSTMENT (CONTINUED)

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

valve stems inward and re-assemble on the hub.

-------

rcry \ \ll IW

NARROW WHEEL TREAD SETTING W

(23 X 10.50 X 12 TIRES SHOWN)

.oNARROW?

X 10.50 X 12 = 32)4

WIDE

23x 10.50 4,12 = 35%

FIGURE 24

If traction tread tires are used, remove the wheel lug nuts and re

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, “UP", “HOLD", “DOWN", and “FLOAT”. The normal

H^out-of-use position is the “HOLD” position and the attachment

^will not lower or raise. When it is desired to raise the attachment,

the lever is pulled to the “UP” position and the cylinder is ac

tuated to lift the attachment. When the lever is moved to the

“DOWN" position, the oil pressure in the cylinder is reversed

and the cylinder forces the attachment down.

When an attachment is being used which is designed to follow

ground contours, the lever should be placed in the “FLOAT”

position. The cylinder is then free to move as the attachment

position requires.

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 shaft 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.

CAUTION: WHEN ADJUSTING CHAIN TENSION ALWAYS GRASP

CHAIN HANDLE FIRMLY (NOT THE CHAIN) AS CONSIDERABLE

TENSION IS ON THE CHAIN AND INJURY TO THE HANDS COULD

RESULT.

HYDRAULIC LIFT REAR ROCK SHAFT

The tractor comes with a lift sensor device so that the front and

center rock shafts can be 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 Litt

Control to the “UP" 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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Ariens 931000 User Manual Page 15

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