Electrohydraulic Clutch - New Holland T4.75F Operator's Manual

Electro-hydraulic clutch
The electro-hydraulic operation of the clutch allows the
operator to control the movement of the tractor without
using the clutch pedal by simply moving the gear lever
from one gear to another, whether forwards or in reverse,
without using the clutch pedal (1) fig. 2.
After selecting the required range, move the shuttle lever
into the forward or reverse gear position, press the push
button (2), without pressing the clutch pedal move the
gear lever (1) onto the required gear and release the but-
ton to set the tractor in motion.
NOTE: The function is disabled when you keep button (2)
fig. 4 pressed for longer than 10 seconds or if you get
up out of the driving seat with the tractor in motion. Can-
celling the function is highlighted by an audible warning,
followed by a message on the performance monitor show-
ing CP (1).
To reactivate this function you can move the shuttle
control lever into neutral or momentarily press the clutch
pedal.
Dual Command (2 Speed Power Shift) dis-
abling indicator
The transmission can be disabled in one of three ways:
1. Initial test
2. Temporary disabling of the transmission
3. Permanent disabling of the transmission.
Initial test
During the tractor start-up phase, the control unit can de-
tect conditions that block operation, for example:
- excessive oil viscosity at low temperatures;
- problems of a hydraulic or mechanical nature.
If the oil temperature is low because of the weather condi-
tions, the test performed automatically by the control unit
can take several seconds. In this case, wait for the auto-
matic test to end and leave the engine idling until the oil
reaches its normal operating temperature.
3 - CONTROLS/INSTRUMENTS
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