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3.4.5. Powered front axle
The powered front axle is driven from the output
shaft of the gearbox for front wheel drive through a
propeller shaft. The differential of the front axle has
an automatic limited sleep. The limited sleep
engages automatically when wheel − spin occurs.
Front wheel drive can be engaged and disengaged
electro − hydraulically in (12+12) or mechanically by
lever in (16+8) when driving a tractor or stable.
In 12+12 models when 4WD is engaged the springs
force the discs together and four − wheel drive
engages. Consequently the 4WD is always
engaged when the engine is stopped (multi − disc
clutch not pressurized). In addition when braking
with both brake pedals or when engaging parking
brake, the front − wheel drive always engages in
order to provide the braking function for the front
wheels. Front wheel drive can be used in all gears,
but when running on the road it should remain
disengaged.
3.4.6. Power take-off
The power take off works fully independently of the
gearbox. It has its own clutch disc in the double
clutch which is attached to the flywheel.
Engagement and disengagement of the power
takeoff is via the PTO clutch control lever of the
clutch disc. Power is transmitted from the flywheel
to the power take off through a power take off shaft
which runs through the gearbox.
With the PTO selector control lever, located on the
right side of the driving seat, you can select either
540 RPM or 1000 RPM, alternative equipment 540E
(750 RPM) PTO.
3.5. Brake system
The oil bath multi − disc brakes are located between
the differential and final drive gears in the final drive
housing. The brakes operate hydraulically from the
brake pedals. When both brake pedals are
depressed the front wheel drive is engaged
automatically (4WD indicator lamp lights
on instrument panel) in order to provide braking
function at the front wheels. The pedals can be
connected together and used as running brakes or
separated and used individually as steering brakes.
The parking brake is mechanically operated and
operates on the main brakes and engages the 4WD
electro hydraulically (4 WD models, parking brake
and 4WD indicator lamps light on instrument panel).
The brakes can be adjusted by means of adjusting
nuts which are fitted on the rear axle.
A trailer brake valve and the air pressure brakes are
available as extra equipment.
3.6. Steering system
The tractor has a hydrostatic steering system
meaning that the steering movement from steering
wheel to the front axle is transmitted by means of oil
under pressure. This makes the hydrostatic steering
particularly easy to use. If the oil pressure in the
steering system should collapse for any reason,
steering is still possible by hand.
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