Iveco Stralis AT/AD. Manual — part 232
Play in ball joints and/or elastic supports loosened
Play in universal joint
Check and adjust in accordance with characteristic data
given in the “AXLE” section.
Check intake pipe and pump shaft seal for leaks and top
up fluid. Bleed the system.
Front wheel toe-in incorrect
5
YES
NO
YES
YES
NO
YES
NO
YES
6
TORSIONAL VIBRATION OF THE
STEERING WHEEL
YES
NO
Wheels out of balance
Balance in accordance with instructions given in the
section ”Wheels and tyres”
Air in hydraulic system
EXCESSIVE PLAY AT THE
STEERING WHEEL
Fix the supports.
Replace ball joints.
Replace universal joint
Send steering unit to a ZF service centre
Internal failure of steering system
8
STEERING
S
TRALIS
AT/AD
Base - January 2003
Fluid leaking from couplings in power steering
circuit
In every case it is necessary to establish where and why hydraulic fluid is being lost, eliminate the cause and, with the engine running,
top up fluid to upper mark on dipstick.
7
YES
NO
YES
YES
NO
YES
NO
YES
8
LOSS OF FLUID
Tank cover not secured
Secure cover
Deterioration of gaskets and seals
Replace worn gaskets and seals, top up fluid and bleed
INSUFFICIENT PRESSURE
IN THE CIRCUIT
Pump not operating correctly
Overhaul or replace the hydraulic pump.
Check coupling and seals for serviceability, replacing any
which are worn
Insufficient oil level in the tank
Top up oil level and bleed circuit
STEERING
9
S
TRALIS
AT/AD
10
STEERING
S
TRALIS
AT/AD
Base - January 2003
PART
TORQUE
Nm
(kgm)
Flanged hexagonal nut for steering support + pitman arm
226.5
±22.5
(22.6
±2.3)
Flanged hexagonal head screw for fixing steering gear stand
278
±28
(27.8
±2.8)
Hexagonal head screw for steering box
527 5
±52 5
(52 7
±5 3)
Calibrated hexagonal head screw for steering box
527.5
±52.5
(52.7
±5.3)
Castellated nut for steering linkage and hydraulic circuit (*)
300
(30)
Self-locking nut for universal joint
55
±5
(5.5
±0.5)
Calibrated screw for universal joint
55
±5
(5.5
±0.5)
Fixing flange for track rod and drag link arm
80
±10
(8
±1)
Hexagonal nut for lever on the steering box
575
±55
(57.5
±5.5)
Nut for screw fastening steering support
146.5
±14.5
(14.6
±1.5)
Y Self-braking flanged hexagonal nut for steering gear stand
226.5
±22.5
(22.6
±2.3)
Y Hexagonal head screw for fixing the steering gear stand
248
±25
(24.8
±2.5)
j Hexagonal nut with flange for pitman’s arm
226.5
±22.5
(22.6
±2.3)
j Hexagonal head flanged screw for pitman’s arm
278
±28
(27.8
±2.8)
j Castellated nut for hydraulic cylinder (*)
400
(40)
j Castellated nut for steering linkage (*)
250
25
j Fixing flange for track rod and drag link arm
170
±10
(17
±1)
j Fixing flange for drag link bar
80
±10
(8
±1)
(*) If at the prescribed torque the notch does not correspond to the hole, keep tightening until the split pin can be inserted.
Y
j
4x2 vehicles - 6x2 vehicles with additional rear lifting axle -
6x2 vehicle with third steering axle - 6x2C vehicles
STEERING
11
S
TRALIS
AT/AD
TOOLS
TOOL NO.
DESCRIPTION
99305446
Hand pump for hydraulic system filling and drain
99305450
Series of connections (2) for 99305446 hydraulic pump
99347042
Steering wheel puller
99347068
Puller for steering rod ball joints
99355032
Wrench for power steering fixing screws
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