751
Model Code Page
8050--8750 19B440
44. HiTech Shuttle
1. 11. 1998
HiTech
1
2
2
10
12
11
9
8
7
6
5
4
3
3
Picture 10B. HiTech Shuttle components
1. Shuttle lever / hand brake
2. In the gear lever knobs, there are push buttons for electri-
cal disengagement of the Shuttle (comprare HiShift).
3. Pressure oil (1,8 MPa) from tractor low pressure circuit
to the valve bl ock on the LH side of th e gearbox (see
pages 420/20C and 440/24)
4. Valve block on which there are proportional solenoid
valves for F--- and R---cl utches of the shuttl e, see page
440/25.
5. DPS valve block, see page 440/25.
6. Display unit, see code 370 (Autoconrol V) page 370/4.
7. The shuttle can also be disengaged electrically with the
clutch pedal. The pedal has a position sensor.
8. Shuttle rpm sensors (+rotation direction information)
9. Gearbox speed sensor (driving speed)
10. Pressure accumulator
11. Control unit
12. Hand brake ram
The construction of the HiTech shuttle is of a planetary type.
Both F --- a n d R --- c lu tch di sc p a ck s ar e si m i la r. Wh e n one of
the c lutches is under pressure (proportional valve in ques-
tion energised), the direction in question is engaged. Power
routes in the Shuttle, see picture 10A (R=reverse drive,
F=forward drive).
The change of the driving direction can be done without
using the clutch pedal or push buttons and the tractor has
not the conventional propulsion clutch on the flywheel.
Automatics control the driving direction change and it is
prevented if the driving speed exceeds 10 km/h.
The following modifications have been done on the tractors
which are equipped with the HiTech Shuttle:
--- casting modifications on the housings of the DPS and
Shuttle.
--- since the DPS is fastened to the shuttle, modifications
have been done in the rear part o f the DPS, see pages
15C and D.
--- Main gearbox input shaft front end has modifications
--- The shaft between flywheel---DPS modified.
--- The pressure and lubricating oil pipes and the various
valve blocks have been arranged in the new way, see
page 440/16A and B.
--- New electrical control of the DPS and Shuttle, see code
370 (Autocontrol V).
--- Drive plate in place of the propulsion clutch, see page
410/4A.
Note! Repair instruction of the HiTech Shuttle, see pages
442/4---11. The elec tric control of the DPS and Shuttle is
described under code 370 (Autocontrol V). Various valve
blocks in connection with the HiTech Shuttle, see pages
440/24 and 25.
In connection with the HiTech Shut tle, the hand brake c ont-
rol has been combined with the Shuttle lever (see page
521/2).
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