Iveco Stralis AT/AD. Manual — part 179
6
AXLES 5876/4 (F 8021) - 5876/5 (F 8021) - 5886/5 (F 9021) - 5876/2 (F 8021)
S
TRALIS
AT/AD
Base - January 2003
Type of axle
5876/4 - 5876/5 - 5876/2 (F 8021) - 5886/5 (F9021)
KINGPINS
α
Kingpin angle
7
o
∅ 1
2
∅
Diameter of roller bearing seats
on the stub axle:
- top seat
∅ 1 mm
- bottom seat
∅ 2 mm
51.967 to 51.986
59.967 to 59.986
∅ 3
4
∅
Outside diameter of roller
bearings for stub axle:
- top bearings
∅ 3 mm
- bottom bearings
∅ 4 mm
52
60
Stub axle bearings
mm
0.014 to 0.033
∅ 5
6
∅
Inside diameter of roller
bearings for stub axle:
- top bearings
∅ 5 mm
- bottom bearings
∅ 6 mm
43
53
∅ 7
8
∅
Diameter of pin for stub axle
- top
∅ 7 mm
- bottom
∅ 8 mm
42.984 to 43.000
52.981 to 53.000
Top bearings - pin
mm
0 to 0.016
Bottom bearings - pin
mm
0 to 0.019
X
X 2
1
Clearance between axle and stub
axle top shim adjustment X1 mm
Gap between axle and stub axle
bottom shim adjustment
X2 mm
0.10 to 0.35
0.25
AXLES 5876/4 (F 8021) - 5876/5 (F 8021) - 5886/5 (F 9021) - 5876/2 (F 8021)
7
S
TRALIS
AT/AD
Type of axle
5876/4 - 5876/5 - 5876/2 (F 8021) - 5886/5 (F9021)
S
Adjustment plates X1; X2
0.25 mm
S mm
0.25 to 1.75
WHEEL HUBS
Wheel hub bearings
2 with tapered rollers
Hub bearing axle clearance
mm
max 0.16
Wheel hub clearance
by tightening retaining ring nut to torque
Bearing pre-load
rolling torque
daNm
0.50 max.
Oil for wheel hub bearings
Quantity per hub
Litres (kg)
Tutela W 140/M DA
~0.35 (0.32)
WHEEL GEOMETRY
Camber (vehicle with no load)
1
o
Caster angle (vehicle with no load)
1º 24”
4x2 - 6x2 vehicles
6x2 C vehicles
Wheel toe-in
4x2 - 6x2 vehicles
1
st
axle
2
nd
axle
Wheel toe in
(unloaded vehicle)
mm
Adjusting tolerance
mm
Checking tolerance
mm
+ 1
± 0.75
± 2
0
± 0.75
± 2
0
± 0.75
± 2
4x2 - 6x2 vehicles
6x2 C vehicles
Steering angle:
α
β
5876/4/5
5886/5
5876/2
Steering angle:
α
5876/4/5
5886/5
Internal
α
External
β
Internal
α
Exter-
nal
β
Internal
α
External
β
1
st
axle
2
nd
axle
1
st
axle
2
nd
axle
Vehicles with mechanical front suspension
52º
36º
-
-
52º
25º
36º
16º
Vehicles with pneumatic front suspension and longitudinal
bars
50º
35º
50º
35º
-
-
-
-
Vehicles with pneumatic front suspension and leaf springs
47º
33º
47º
33º
-
-
-
-
Axle weight
kg
Maximum load capacity
kg
-
7500
YES
1
NO
YES
NO
STEERING HARDNESS
YES
NO
YES
NO
YES
NO
YES
Front axle misaligned.
Restore the alignment and tighten the fixing nuts of
the leaf spring brackets to torque.
Wheel toe-in abnormal.
Adjust the toe-in of the front wheels correctly.
Tyre pressure abnormal.
Inflate the tyres to the required pressure.
Insufficient lubrication of joints.
Lubricate the joints thoroughly.
Adjustment between stub axle and front axle
incorrect.
Carefully adjust the play between the stub axle and
front axle.
Elements involved in the rotation of the stub axle on
the pin are inefficient.
Check and replace any deteriorated parts.
The main operating trouble of the front axle:
1 - Steering hardness;
2 - Wobbling;
3 - Noise.
8
AXLES 5876/4 (F 8021) - 5876/5 (F 8021) - 5886/5 (F 9021) - 5876/2 (F 8021)
S
TRALIS
AT/AD
Base - January 2003
YES
2
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
WOBBLING
Caster abnormal.
Check the assembly of the axle, repair or replace any
deformed parts.
Front axle misaligned.
Restore the alignment and tighten to torque the nuts
of the brackets fixing the leaf springs on the axle.
Wheel toe-in abnormal.
Adjust the toe-in correctly.
Ball joints of the steering tie rods inefficient.
Replace the defective parts.
Wheel hub bearing clearance abnormal.
Adjust the end float after making any necessary
replacements.
Wheels off centre:
rim centred, buckled
tyre fitted on rim incorrectly.
Replace the faulty rim.
Deflate and centre the tyre on the rim.
Wheels unbalanced.
Balance the wheels.
AXLES 5876/4 (F 8021) - 5876/5 (F 8021) - 5886/5 (F 9021) - 5876/2 (F 8021)
9
S
TRALIS
AT/AD
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