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400 4F_11319.4.enu
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Operation
Turning with counter-rotating tracks
You can turn the vehicle in its own length by counter-rotating
the tracks. This causes the vehicle to dig in to some extent, so
you should manoeuvre in this way only when the snow is of
adequate depth. It is advisable to employ this method of
turning in exceptional situations only. Turning with counter-
rotating tracks places very high strains on the rubber belts and
the track cleats.
Driving: uphill
Always maintain a moderate speed on downgrades. This
precaution will enable you to ensure that the engine does not
overrev, the vehicle does not drift out of control, and the snow
is not dragged downhill by the action of the tracks. Use the
speed potentiometer to reduce the speed of descent.
Restrict your steering movements to a minimum. Make sure
that both tracks are turning.
Reduce speed as you crest rises, in order to ensure that you have
the vehicle under control as it tips forward. This will prevent the
front blade from digging in and the tracks from losing traction.
Invariably, do not negotiate a downgrade unless you
are sure that:
- the adhesion of the snow is adequate.
- your run out at the bottom of the slope is adequate and
safe.
- there are no skiers in the danger zone.
If the PistenBully starts slipping on a downgrade and drifts at
an angle to left or right (vehicle's longitudinal axis drifts off the
line of fall), you must immediately apply opposite lock (turning
the steering wheel to the right or left, as applicable), counter-
rotating the tracks if necessary, in order to bring the vehicle's
longitudinal axis back onto the line of fall. Briefly increase
engine speed in the process.
You can counteract slippage along the line of fall by reversing
the tiller shaft's direction of rotation and carefully employing
the front blade to re-stabilise the vehicle.
D
RIVING
TIPS
AND
INFORMATION
Summary of Contents for PistenBully 400 4F
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