DAF LF45, LF55 Series. Manual - part 522

LF45/55 series

Inspection and adjustment

FRONT AXLE, F36/F48

2-13

Screw the thrust washer (8) onto the
threaded spindle.

Fit the spring retainer (3), spring (4) and
thrust sleeve (6) in the bracket (1).
Fit the locking screw (5). It should be
possible to move the thrust sleeve (6)
freely.

Note:
Fit the correct thrust sleeve (6).
The thrust sleeve (6) must abut the rim of
the steering ball joint (7).

Unscrew thrust bolt (2) until the flange of
the thrust sleeve (6) abuts the bracket
(A=0 mm).

Fit the special tool to the steering ball joint
(7) and turn the threaded spindle (9) by
hand until the special tool is tight around the
steering ball joint (7).

Tighten the thrust bolt (2) until its head
abuts the bracket (1).

Measure the play “A” between the thrust
sleeve and the bracket using a feeler
gauge.
Compare the measurement taken with the
maximum permissible steering ball joint
play, see “Technical data”.
If necessary, replace the steering ball joint.

S700426

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FRONT AXLE, F36/F48

Inspection and adjustment

LF45/55 series

2-14

2.9 CHECKING FRONT AXLE HOUSING

General
If the vehicle has been involved in a collision or
if abnormal deviations are measured when the
wheel alignment is checked, it is advisable to
check the axle housing.

A number of the measurements below can also
be carried out using alignment equipment.
Consult the alignment equipment manual for this
purpose.

The special tools required cannot be obtained
from DAF and must be manufactured by
yourself.

S7 00 119

Checking front axle housing
1.

Take the front axle off the vehicle and
remove both swivel axles, see “Removal
and installation”.

Place a straight edge across the spring
seats of the front axle housing and check
whether they are aligned.

S7 00 151

Place a straight edge across both spring
seats and check whether they are parallel
with each other.

S7 00 152

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LF45/55 series

Inspection and adjustment

FRONT AXLE, F36/F48

2-15

Place the two gauge bars in the swivel axle
holes.
Place a straight edge with a protractor on
the spring seat. Measure the angle of the
gauge bars relative to the spring seats. The
angle measured should be 90

S7 00 149

Measure the king pin inclination (KPI) by
placing a straight edge with a protractor on
the spring seats.
By placing the straight edge of the
protractor parallel to the gauge bar, the
angle can be read. See “Technical data” for
the correct angle.

If a deviation is found during one of the
checks, the axle housing must be replaced.

Straightening of the front axle
housing is not permitted. This
could affect the strength of the
materials.

S7 00 150

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FRONT AXLE, F36/F48

Inspection and adjustment

LF45/55 series

2-16

2.10 CHECKING WHEEL RIM

General
1.

Check the wheel rims for the following:
-

deformation of the wheel rims and
wheel disc.

deformation or cracking of the wheel
stud holes.

corrosion, including on the tyre side of
the rim and on the rim ring.

Cracked or damaged wheel rims or wheel
rims with cracked or deformed wheel stud
holes must be replaced.
Welding or repairing wheel rims in any way
is prohibited. Welds will crack again in the
course of time due to the dynamic load.

When taking a damaged wheel rim
off the vehicle, deflate the tyre
(remove the tyre valve), because of
possible tensions in the wheel rim.

To prevent damage to the tyre due to
corrosion and/or indirect tension cracks
(due to notching), the anti-corrosion
treatment of the wheel rim must not be
damaged in any way.
For removal of corrosion and repairing the
paint layer, see “Paint treatment”.
Before re-spraying, remove the old layer of
paint to prevent the paint layer from
becoming too thick. The total layer of paint
must not be more than 50 microns thick.

If the paint layer is more than 50
microns thick in total (wash primer
and finishing paint), the pre-tension
of the wheel studs could be
reduced if this layer were to be
crushed. This could result in the
wheel nuts coming loose.

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