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DAF CF65, CF75, CF85 Series . Manual - part 997

200423

2-5

Inspection and adjustment

STEERED TRAILING SWIVEL AXLE

ΧΦ65/75/85 series

2.2 INSPECTION AND ADJUSTMENT, CASTER

Inspection of caster
1.

Place the vehicle on a level and horizontal

surface.

Put the trailing axle in the "straight ahead"

position.

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.

Compare the reading with the specified

value. See 'Technical data'.

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.

Repeat the measurement once the steel

washers have been fitted.

S7 00 728

STEERED TRAILING SWIVEL AXLE

2-6

200423

Inspection and adjustment

ΧΦ65/75/85 series

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.

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.

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

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.

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.

Measure the axle load of the axle being

inspected.

Measure the toe of the axle.

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

0,5

-0,5

-1,5

1,5

2,5

3,5

4,5

5,5

-2

mm/m

152 N

x 1000 KG

S700910

STEERED TRAILING SWIVEL AXLE

2-8

200423

Inspection and adjustment

ΧΦ65/75/85 series

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.

Set the correct length by lengthening or

shortening the track rod.

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).

Thoroughly clean and check the clamping

bracket bolts. A corroded or damaged bolt

must be replaced. Replace the self-locking

nut.

Tighten the locking bolts of the clamping

brackets to the specified tightening torque.

See 'Technical data'.

After this, check the toe once again.

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.

-1

0,5

-0,5

-1,5

1,5

2,5

3,5

4,5

5,5

-2

mm/m

152 N

x 1000 KG

S700911

S7 00 539

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