Iveco Stralis AT/AD. Manual — part 200
S
TRALIS
AT/AD
90
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
Base - January 2003
Refill nitrogen
Steering centre an cylinder positioning adjustment
incorrect
Adjust where necessary
Oil leakage inside the rear cylinder
Replace the cylinder
Oil leakage inside the front cylinder
Replace the cylinder
Balance wheels
YES
YES
YES
YES
NO
NO
NO
YES
Third axle wheel balancing incorrect
3
IRREGULAR WEAR OF THE THIRD
AXLE TYRES
Refill the system
YES
Third axle circuit oil low pressure
4
POWER STEERING SYSTEM OIL
LAMP LIGHTED
Transmitter irregular operation
Check wiring and replace transmitter if necessary
NO
Oil leakage inside the rear cylinder
YES
NO
Replace the cylinder
YES
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
91
S
TRALIS
AT/AD
Pressure gauge irregular operation
Check wiring and replace the pressure gauge if
necessary
Oil leakage inside the rear cylinder
Replace the rear cylinder
Refill the system
YES
YES
NO
NO
YES
Third axle circuit oil low pressure
5
THIRD AXLE HYDRAULIC
SYSTEM LOW OIL PRESSURE
LAMP LIGHTED
Transmitter irregular operation
Wiring irregular operation
YES
YES
NO
NO
YES
Lamp burnt
(Check with ”lamp test”)
6
Replace the transmitter
Check wiring and replace faulty components
Replace the lamp
THIRD AXLE HYDRAULIC
SYSTEM LOW OIL PRESSURE
LAMP OFF IN PRESENCE OF FAULT
S
TRALIS
AT/AD
92
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
Base - January 2003
PART
TORQUE
Nm
(kgm)
Nut fastening slave cylinder and centring cylinder ball joint
300
(30)
Steering linkage castellated nut
250
(25)
Nut for screw fastening air spring
92
± 9
(9.2
± 0.9)
Nut fastening spring supporting sheet to chassis
146.5
± 14.5
(14.7
± 1.5)
Nut for screw fastening rear axle support
92
± 9
(9.2
± 0.9)
Nut for screw fastening plate to support
92
± 9
(9.2
± 0.9)
Lift air spring damaged
Replace air spring
Fault of mechanical components
Replace faulty mechanical components
Close or replace loosened or damaged connections.
Replace broken or damaged pipes
YES
YES
NO
NO
YES
Leakage or breaking in the hydraulic system piping
7
THE THIRD AXLE DOES NOT LIFT
OR LOWER OR DOES NOT ASSIST
AT PICKUP
YES
NO
Fault on the electric system
- Fault memory reading
- Pressure sensor parameter reading
- Check the wiring
- Replace faulty components
STEERING REAR ADDED AXLE 57080/D1 (N 8072)
93
S
TRALIS
AT/AD
CHARACTERISTICS AND DATA
Steering and third axle hydraulic system
Power steering system
Ball-circulation ZF 8098 with built-in pressure relief valve
Operating pressure variable
150 + 15 bar
steering centre
22.2:1
Reduction ratio
variable
maximum steering
26.2:1
Power steering pump
Type
Minimum no of revolutions
rpm
ZF
500
Minimum no. of revolutions
rpm
∽ 500
Maximum no. of revolutions
rpm
∽ 3500
Maximum no. of revolutions
rpm
Maximum pressure
3500
Maximum pressure
(without pressure relief valve)
bar
165
(
p
)
Delivery (controlled)
dm
3
/min
20
Slave cylinder
Useful stroke
98 mm
Useful stroke
98 mm
49086
Length between wheel bases
in straight running position
890
± 1 mm
Centring cylinder
Useful stroke
180 mm
49086
Length between wheel bases
in straight running position
1000 mm
Hydraulic accumulator
38948
Nitrogen pre-load pressure
8.5
± 1 bar
Oil Tutela GI/A
Quantity
4 to 5 litres
bar
Circuit pressure
(during straight running)
12 +1 bar
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