SK599-AT5
Driving
Truck
4-64
SPIERINGS MOBILE CRANES USER MANUAL V 0.1
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4.17.3.
Enabling transfer case to neutral position
When an external compressor is connected or when there is sufficient air pressure in the secondary air
pressure vessel, the transfer case can be switched to its
neutral position
.
•
Switch the
transfer case
to its
neutral position
by enabling switch
transfer case neutral
in the
central console:
-
Check if the symbol
transfer case neutral
on the
main screen
is active.
4.17.3.1.
Remove drive shafts on output shafts of the transfer case
If no external compressor is used, then the drive shafts on the output shafts of the transfer case need
to be removed.
4.17.3.2.
Power-assisted steering
The steering pumps which are powered by the diesel engine, will deliver no more oil, eliminating the
power-assisted steering largely. Only the emergency steering pump delivers oil for the power-assisted
steering. However, this pump only delivers oil when the vehicle is moving (> 5 up to 8 kph)
(> 3.1 up to 5 mph).
The rear axle steering is completely out of operation. The steering system ensures axles 4 and 5 to
centre itself and to operate rigid. The two front axles remain normally steerable.
CAUTION!
Support the drive shafts before loosening the bolts in the flange.
This prevents personal injury or damage by unexpected falling of the shafts.
The weight of the drive shafts is 25 to 60 kg each.
CAUTION!
If the drive shafts on the output shafts of the transfer case are removed, the
emergency steering pump is not functioning.
The power-assisted steering is completely eliminated and the vehicle is hard to
handle (see Chapter 12. Steering
CAUTION!
Only the mechanically steered axles will function, increasing the turning circle
significantly (see Chapter 12. Steering
CAUTION!
The vehicle is steering considerably heavier by the elimination of the power-
assisted steering (see Chapter 12. Steering
