DAF CF65, CF75, CF85 Series . Manual — part 997
©
200423
2-5
Inspection and adjustment
STEERED TRAILING SWIVEL AXLE
ΧΦ65/75/85 series
7
7
2.2 INSPECTION AND ADJUSTMENT, CASTER
Inspection of caster
1.
Place the vehicle on a level and horizontal
surface.
2.
Put the trailing axle in the "straight ahead"
position.
3.
Use high-quality wheel alignment equipment
for the inspection. The equipment must be
calibrated regularly and preferably be of the
type that can be calibrated before every use.
4.
Follow the instructions for the wheel
alignment equipment carefully.
5.
Compare the reading with the specified
value. See 'Technical data'.
6.
Carry out the caster measurement on the
other axle side too.
If different readings are obtained, the axle
suspension should also be inspected for
deviations.
Adjusting the caster
1.
Adjust the caster by fitting hardened steel
washers between attachment of the torque
rods or the triangular link
(DAF no. 0202838). The washers are 3 mm
thick. Grind the washers if necessary. The
application of more than one washer per bolt
is not acceptable.
2.
Repeat the measurement once the steel
washers have been fitted.
S7 00 728
STEERED TRAILING SWIVEL AXLE
2-6
©
200423
Inspection and adjustment
7
ΧΦ65/75/85 series
7
2.3 INSPECTION OF CAMBER ANGLE AND KING PIN INCLINATION
Note:
In the following measurement, only the camber
angle is measured. If the camber angle is correct,
the king pin inclination must also be correct.
General
-
The vehicle should be on a flat and horizontal
surface, with the steering gear in the "straight
ahead" position.
-
The tyre pressure should be correct.
-
The camber angle can be measured using
an angle measuring device or wheel
alignment equipment.
-
The measurement should be carried out on
both wheels.
Inspection of camber angle using angle
measuring device
1.
Thoroughly clean the side of the wheel rim.
Position the angle measuring device against
the wheel rim. Keep the angle measuring
device in the vertical position.
2.
Read off the angle shown. For the permitted
angle, see 'Technical data'.
Inspection of camber angle using wheel
alignment equipment
1.
Use high-quality wheel alignment equipment
for the inspection. The equipment must be
calibrated regularly and preferably be of the
type that can be calibrated before every use.
2.
Follow the instructions for the wheel
alignment equipment carefully.
For the permitted angle, see 'Technical data'.
The following points may cause the reading to
deviate:
-
excessive swivel axle bearing play
-
bent front axle. In this case, the king pin
inclination will also deviate from the values
specified.
S7 00 566
©
200423
2-7
Inspection and adjustment
STEERED TRAILING SWIVEL AXLE
ΧΦ65/75/85 series
7
7
2.4 INSPECTION AND ADJUSTMENT, TOE
Inspection of toe
1.
Use high-quality wheel alignment equipment
for the inspection. The equipment must be
calibrated regularly and preferably be of the
type that can be calibrated before every use.
Follow the instructions for the wheel
alignment equipment carefully.
2.
Ensure that the steering gear is free of
tension. To that end, drive the vehicle, if
possible, directly to the place of
measurement. If this is not possible, drive
forwards and backwards at the place of
measurement with the steering gear in the
"straight ahead" position. Do not brake
excessively because of weight transmission
to front axle.
3.
Measure the axle load of the axle being
inspected.
4.
Measure the toe of the axle.
5.
Using the graph for the axle concerned,
inspect whether the toe is correct or must be
corrected (see 'Technical data').
There are two examples explaining how the
graphs are to be read in 'Technical data'.
Note:
If a large deviation is measured, the cause should
be traced. The deviation could, for example, have
been caused by a collision, during which
components were bent. If so, the remaining
steering gear components should be inspected
carefully.
Example 1
Look at the graph for the 152N axle, disc brake
version, used as a leading rear axle or first front
axle in a vehicle with two steered front axles.
The measured axle load is 4,000 kg and the
measured toe is 2 mm/m (toe-in).
The intersection of the lines (A) occurs in the
shaded area. This shows you that the toe is within
the permitted tolerance.
The toe does not have to be corrected.
1
2
3
4
5
6
7
8
0
-1
0,5
-0,5
-1,5
1,5
2,5
3,5
4,5
5,5
-2
2
3
4
5
6
1
mm/m
152 N
x 1000 KG
A
S700910
STEERED TRAILING SWIVEL AXLE
2-8
©
200423
Inspection and adjustment
7
ΧΦ65/75/85 series
7
Example 2
Look at the graph for the 152N axle, disc brake
version, used as a single front axle or second
front axle in a vehicle with two steered front axles.
The measured axle load is 5,000 kg and the
measured toe is 1-mm/m (toe-out).
The intersection of the lines (B) occurs outside
the shaded area. This shows you that the toe is
outside the permitted tolerance. If the amount
measured lies outside the shaded area, the toe
must be adjusted to the amount indicated by the
intersecting line (C).
Adjusting the track
1.
Slacken the bolts of the clamping brackets
until the track rod can be rotated.
2.
Set the correct length by lengthening or
shortening the track rod.
3.
Make sure that the threaded ends of the ball
end are not screwed too far from the track
rod. The clamping bracket should always
fully engage the screw thread of the ball end
(see drawing).
4.
Thoroughly clean and check the clamping
bracket bolts. A corroded or damaged bolt
must be replaced. Replace the self-locking
nut.
5.
Tighten the locking bolts of the clamping
brackets to the specified tightening torque.
See 'Technical data'.
6.
After this, check the toe once again.
7.
Make sure that the clamping brackets do not
come into contact with the axle housing at
maximum wheel deflection. Turn the
clamping brackets if necessary.
7
8
0
-1
0,5
-0,5
-1,5
1,5
2,5
3,5
4,5
5,5
-2
2
3
4
5
6
1
mm/m
152 N
x 1000 KG
5
B
1
2
3
4
6
C
S700911
S7 00 539
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