SK375-AT3
Driving
Truck
SPIERINGS MOBILE CRANES USER MANUAL V 0.0
4-37
Nov
2
0
1
4
C
h
a
n
g
e
s
a
n
d
t
y
p
o
g
ra
p
h
ic
a
l
e
rr
o
rs
r
e
s
e
rv
e
d
.
©
2
0
1
4
S
p
ie
ri
n
g
s
M
o
b
ile
Cr
a
n
e
s
–
A
ll r
ig
h
ts
r
e
s
e
rv
e
d
.
Each hydraulic cylinder is equipped with a spring accumulator, which causes the relevant axles to
spring.
The total travel of the spring cylinders is 247 mm.
From the driving/levelling position, the travel is +187 mm up to
– 60 mm.
The spring accumulators can be locked, causing the spring function to be disabled.
When
driving an erected tower
the suspension must be locked to allow stable transport
(see
§ 4.15. Driving with an erected tower
As soon as the symbol
axle blocking
on the main screen appears, the spring accumulators are
disabled and the suspension is locked.
Disabling the spring load happens under the following conditions:
Switch
outrigger control
is enabled:
-
The symbol
outrigger control
on the main screen is active;
If the tower is not horizontally placed on the truck.
4.13.2.2.
Off-the-road mode
To achieve the maximum ground clearance, all axles need to be fully protracted.
This is the so-called
off-the-road mode
.
Proceed as follows:
1. Enable switch
release axle height adjustment
on the control panel;
2. Keep switch
all axles down
on the control panel pressed in:
-
All axles are extended simultaneously;
-
If all axles are fully extended, symbol
off-the-road mode
on the main screen becomes
active;
3. Disable switch
release axle height adjustment
on the control panel:
-
The spring load of the truck is active.
CAUTION!
Check if there are no persons on or around the truck in order to prevent dangerous
situations.
