DAF CF65, CF75, CF85 Series . Manual — part 1084

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200448

3-1

Rear axle alignment

DIAGNOSTICS

ΧΦ65/75/85 series

9

1

3. REAR AXLE ALIGNMENT

3.1 FAULT-FINDING TABLE

SYMPTOM: AXLE MISALIGNMENT

Possible cause

Remedy

Axle suspension clearance.

Check the axle suspension. Replace the worn

parts.

Loose U-bolts.

Check the tightening torques of the U-bolts.

Tighten the nuts to the specified tightening

torques.

Shifted centre bolt.

Check the centre bolt. Check the tightening

torques of the U-bolts.

Loose or shifted front spring bracket.

Check the spring brackets. Fit the spring bracket

as specified.

Incorrect spring bracket fitted.

Fit the spring bracket as specified.

Sagged spring assembly or spring assembly with

broken spring leaves.

Check opening of both spring assemblies. Replace

spring assemblies.

Difference in length between the spring

assemblies.

Measure the centre-to-centre distance between

shackle pin or spring eye bolt and centre bolt.

Adjust the alignment or replace the spring

assemblies.

Misalignment of the vehicle due to wrongly

adjusted or defective height adjustment.

Check/replace sensor. Recalibrate.

Bent torque rod (air suspension and tandem axle). Check the torque rods. Replace if necessary.

Incorrectly fitted torque rods (air suspension and

tandem axle).

Check the torque rods. Fit the torque rods

correctly.

Difference in length between the torque rods at the

vehicle's left and right sides (air suspension and

tandem axle).

Measure the length of the torque rods. Adjust the

difference in length.

Bent axle housing.

Check the straightness of the axle housing. If

possible, adjust by changing the axle alignment.

Bent leaf-sprung trailing axle yoke.

Replace the trailing axle yoke.

Misalignment of the vehicle because the

superstructure is heavier on one side.

Measure the wheel pressure. Distribute the weight

more evenly.

Inadequate alignment of axle suspension.

Check the alignment. Adjust the axle alignment.

Bent chassis.

Measure the chassis.

Straighten the chassis, if possible.

Chassis side members have shifted in relation to

one another.

Measure the chassis.

Straighten the chassis, if possible.

Align the axle.

DIAGNOSTICS

3-2

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200448

Rear axle alignment

1

ΧΦ65/75/85 series

9

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Contents

CHASSIS

ΧΦ65/75/85 series

9

2

2 Chassis

CONTENTS

Page

Date

1.

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . 200448
1.1

Repairs to the chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . 200448

1.2

Drilling in the chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 . . . . . 200448

1.3

Replacing rivets by bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 . . . . . 200448

CHASSIS

2

©

200448

Contents

2

ΧΦ65/75/85 series

9