DAF CF65, CF75, CF85 Series . Manual — part 981

©

200423

2-7

Inspection and adjustment

FRONT AXLE/LEADING REAR AXLE

ΧΦ65/75/85 series

7

6

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

FRONT AXLE/LEADING REAR AXLE

2-8

©

200423

Inspection and adjustment

6

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 front axle(s)/leading rear axle
toe
1.

Slacken the bolts of the clamping brackets

until the track rod can be rotated.

2.

Set the correct length for track rod type A

(see 'Technical data') by lengthening or

shortening the track rod.

Track rod type B can be adjusted using the

nuts with internal and external thread.

Both bolts should receive an equal number

of turns.

Note:

Make sure that the threaded ends of the ball

joints are not pushed too far from the track

rod. The clamping bracket should always

fully engage the ball joint screw thread. See

the drawing.

3.

Thoroughly clean and check the clamping

bracket bolts. A corroded or damaged bolt

must be replaced.

Replace the self-locking nut.

4.

Tighten the locking bolts of the clamping

brackets to the specified tightening torque.

See 'Technical data'.

5.

After this, check the toe once again.

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

A

S7 00 060

B

S7 00 061

S7 00 539

©

200423

2-9

Inspection and adjustment

FRONT AXLE/LEADING REAR AXLE

ΧΦ65/75/85 series

7

6

6.

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.

The straight steering rod clamping bracket

(type A) may have any position.

A

S7 00 060

FRONT AXLE/LEADING REAR AXLE

2-10

©

200423

Inspection and adjustment

6

ΧΦ65/75/85 series

7

2.5 INSPECTION AND ADJUSTMENT, WHEEL DEFLECTION

Work safely and block the vehicle so

that it cannot slide off the turning

plates.

Inspection of wheel deflection
1.

Engage the vehicle's parking brake and

place chocks in front of and behind the rear

wheels.

2.

Jack up the steerable axles and place

turning plates under the centre of the wheels.

Only use turning plates which allow for wheel

displacement caused by the wheel offset.

3.

Place the wheels in the "straight ahead"

position and lower them until they rest on the

turning plates. Set the turning plates to zero

degrees.

4.

Turn the steering wheel fully to the right until

the end stop is reached and check the wheel

deflection on the right. See 'Technical data'.

5.

Turn the steering wheel fully to the left until

the end stop is reached and check the wheel

deflection on the left. See 'Technical data'.

Adjusting the wheel deflection
1.

The wheel deflection is adjusted by changing

the length of the stop bolt on the swivel axle.

After the adjustment, secure the bolt using

the lock nut.

2.

After finishing the adjustment, make sure

that the tyre does not come into contact with

other components.

3.

If larger tyres, wheel rims or snow chains

have been fitted, first make sure that these

do not come into contact with other

components.

Reduce the wheel deflection if necessary.

4.

When the wheel deflection has been

changed, re-adjust the wheel deflection

limiting valves of the steering box.

}

S7 00 584