SK599-AT5
Pneumatic system
Truck
9-2
SPIERINGS MOBILE CRANES USER MANUAL V 0.1
D
ec
2
01
6
C
h
an
ges
an
d t
y
po
gr
ap
hi
c
al
er
ro
rs
res
er
v
ed.
©
20
1
6
S
pi
er
ings
M
obi
le
C
ran
es
–
A
ll r
ight
s
re
se
rve
d
.
9.2.
Secondary system
The secondary system is composed of two compressed air reservoirs (see
):
•
Compressed air reservoir 4
(10 litres):
-
This reservoir ensures the air pressure for all secondary components (accessories);
•
Compressed air reservoir 5
(20 litres):
-
This is an emergency reservoir for the clutch and the gear box. If the air pressure in the
secondary system is lost, still the clutch and the gear box can be switched for a few times.
The following components are operated by the secondary system:
•
Engine brake:
-
Close/open exhaust valve;
-
Enable/disable fuel pump;
•
Gear box:
-
Power supply various features gear box and retarder;
•
Transfer case:
-
Switch between on-the-road mode / off-the-road mode;
-
Switch longitudinal differential lock axle 3;
-
Switch towing position;
•
Axles:
-
Switch transversal differential lock axles 2, 3 and 5;
•
EAS-system:
-
Supply control AdBlue;
•
Cab:
-
Air suspension driver’s seat.
The pressure reducing valve for the components of the secondary circuit is adjusted to 5.5 bar.
