Iveco Stralis AT/AD. Manual — part 199
60181
Figure 6
1.
O
il
ta
nk
w
it
h
low
oil
lev
el
sw
it
ch
-
2
.Hyd
ra
ulic
p
ump
-
3
.C
ent
ring
cylind
e
r
-
4.
P
res
sure
ga
ug
e
(2
b
ar)
-
5.
Hyd
ra
ulic
accumula
to
r
-
6.
Sla
ve
cylind
e
r
-
7.
P
o
wer
st
eering
sys
te
m
-
V
.C
ap
S
TRALIS
AT/AD
86
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
Base - January 2003
73043
Figure 7
1. Electropneumatic distributor - 2. Level sensor - 3. Rear axle air spring - 4. Pressure sensor - 5. Sensor pressure -
6. Air spring for additional axle lifting - 7. Additional axle air spring - 8. Check valve - 9. Pressure sensor
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
87
S
TRALIS
AT/AD
VEHICLES WITH PNEUMATIC REAR SUSPENSIONS AND PNEUMATIC LIFTING
Location on the vehicle of the main components
60909
Figure 8
1. Light indicator (air spring suspension low pressure) - 2. Pressure gauge (opening pressure 8 bar) - 3. Check valve -
4. Pressure control intake - 5. Axle electropneumatic distributor - 6. Rear axle air spring - 7. Axle suspension pressure gauge - 8.
Air spring for additional rear axle - 9. Pressure gauge for additional rear axle suspension - 10. Check valve* -
11. Pressure gauge for additional rear axle lift - 12. Air spring for additional rear axle lift - 13. Level sensor -
14. Controlled pressure valve - 15. Manual condense bleeder - 16. 30 litres air tank
* Both must be fitted on the vehicle with connection 1 downward.
S
TRALIS
AT/AD
88
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
Base - January 2003
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
89
S
TRALIS
AT/AD
YES
Inefficient operation of mechanical components
(Visual inspection)
Overhaul or replace worn or damaged mechanical
components
Leakage or breaking in the hydraulic system piping
Close or replace loosened or damaged connections.
Replace broken or damaged pipes.
Oil leakage inside the rear cylinder
Replace the cylinder
Oil leakage inside the front cylinder
Replace the cylinder
4. Power steering system oil lamp lighted.
5. Third axle hydraulic system low oil pressure lamp
lighted.
6. Third axle hydraulic system low oil pressure lamp off
in presence of fault.
7. The third axle does not lift or lower or does not assist
at pickup.
Main operating faults of the additional steering rear axle:
1. Partial or total reduction of the third axle steering.
2. Total or partial lack of realignment of the third axle.
3. Irregular wear of the third axle tyres.
YES
YES
1
PARTIAL OR TOTAL REDUCTION
OF THE THIRD AXLE STEERING
NO
NO
NO
YES
YES
Air in the hydraulic system
Bleed and refill the system
System oil low pressure
Refill the system
YES
2
TOTAL OR PARTIAL LACK OF
REALIGNMENT OF THE THIRD AXLE
NO
(continue)
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