TARAL VST 818, Руководство пользователя, Страница: 29 / 60

OPERATOR'S SEAT 3-POINT LINKAGE
It is cushioned seat with spring support for maximum operator
comfort. Vibration levels of the seat measured for lightweight
and heavy operators as per 78/764/EEC are 1.24m/s 2 and
1.16m/s 2 , respectively.
In order to reduce the vibration levels:
1. Try to keep the vertical position adjustment of the seat at
medium level.
2. Adjust the spring tension according to the weight of the
operator by twisting the screw at the back side.
SPOOL VALVE OULET
This tractor is provided with a 3-point linkage of Category-1 as a
standard equipment.
The implement which is to be mounted, must match the 3-point
linkage of Category-1.
NOTE
When an implement is towed with the linkage drawbar
installed on lower links, the lower links should always be
kept horizontal.
HYDRAULIC SYSTEM
Your tractor is provided with the live hydraulic system in which a
hydraulic pump is driven directly by the engine camshaft and
always makes the oil circulate to exert the hydraulic pressure
while the engine is running. The hydraulic oil of exclusive use
is reserved in the transmission case and passed through the oil
filter, thus ensuring effective operation.
Position control, flow control (down speed control) and lock of
the implements are possible with the hydraulic control lever
installed on the right side of the seat. For external service, the
hydraulic pressure can be taken out by fitting an adapter plate
to the delivery pipe installed on the left side of the seat.
External outlet valve
FRONT AXLE STEERING ADJUSTMENT
Rotation levels of the front axle are adjustable. The length of the
stopper is adjusted by tightening and loosening the No.1 bolt
shown in the side picture, after adjustment is done No.2 contra
nut is tightened to secure it. Recommended value for the distan-
ce from the upper stopper to the cast (A distance) is 22 mm
(0.866 in.).
CAUTION
Reducing this value, increases the rotation angle reducing the
lateral stability of the tractor, this may cause the tractor to roll
over on turnings or inclined lands. So do not adjust it below the
recommended value.
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CAUTION
When using an implement which requires a mass amount of oil,
the oil level on the transmission case of the tractor may drop
below the minimum baseline. If this happens, components of
the tractor may be damaged due to insufficient lubricating. To
prevent this from happening, be watchful of oil level when using
hydraulic outlet valve; and if necessary, replenish oil using the
oil recommended for transmission.