Iseki TH4330 - GROUND SPEED SELECTION (Hydrostatic Transmission)

OPERATION
41
GROUND SPEED SELECTION
(Hydrostatic Transmission)
The hydrostatic transmission provides variable speed
control in forward or reverse.
FIGS. 5-9 & 5-10:
Range shift lever, 1, provides two major changes in
ground speed.
IMPORTANT: STOP tractor whenever shifting the range
shift lever 1.
Hydrostatic control lever (TH4330/4290), 2, is used
only forward travel and provides infinitely variable speeds
from “0” to top speed in a particular range. This lever
allows the operator to set a constant speed for operating
in large areas, road travel, etc. Lever will hold position
selected and must be returned to “0” position, manually
(or by carefully pushing reverse pedal, 4).
Pedal, 3, also controls forward travel speed. As pedal is
progressively pushed down, a corresponding increase in
ground speed will be noticed.
When released, pedal will return to neutral position
selected by hydrostatic control lever. When lever is in the
“0” position, pedal will return to neutral, and Tractor will
stop.
Reverse travel speed is obtained by pushing pedal, 4,
down. As pedal is progressively pushed down, a corre-
sponding increase in ground speed will be noticed. When
released, pedal will return to neutral position.
FIG. 5-11: Arrangement of gear with appropriate ground
speeds, in order from slow to fast, are shown in the chart
at right.
NOTE: Ground speed indicated at 2600 engine rpm with
TH4330 and 2500 engine rpm with TH4290/4260
FIG. 5-9
FIG. 5-10
FIG. 5-11
SHIFT
POSITIONS
TH4260
Hydrostatic
(Engine 2500 rpm)
TH4290
Hydrostatic
(Engine 2500rpm)
TH4330
Hydrostatic
(engine 2600 rpm)
Tire Turf Wide Turf Agri. Turf Wide Turf Agri. Turf Wide Turf Agri.
Forward Forward Forward
t
4.89 5.43 5.36 4.89 5.43 5.36 5.09 5.65 5.57
1
r
10.54 11.69 11.52 10.54 11.69 11.52 10.96 12.16 11.98
2
r
25.09 27.86 27.44 25.09 27.86 27.44 26.10 28.97 28.54
Max.Speed
(forward)
High Iide 2750 rpm High Iide 2750 rpm High Iide 2810 rpm
27.13 30.10 28.21 27.13 30.10 28.21 28.21 31.30 30.84
Reverse
t
3.42 3.75 3.70 3.42 3.75 3.70 3.56 3.90 3.90
1
r
7.38 8.07 7.67 7.38 8.07 7.67 7.67 8.39 8.39
2
r
17.57 19.20 18.27 17.57 19.20 18.27 18.27 19.97
19.97