DAF CF65, CF75, CF85 Series . Manual - part 915

 

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DAF CF65, CF75, CF85 Series . Manual - part 915

 

 

©

 200423

3-9

Removal and installation

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

3.6 REMOVAL AND INSTALLATION, AUTOMATIC SLACK ADJUSTER

Disc brakes

Note:
The automatic slack adjuster of the brake calliper 
should not be removed. If defective, the brake 
calliper should be replaced.

Drum brakes

Removal, automatic slack adjuster
1.

Pressurise the system to at least 7.5 bar.

2.

Support the axle, and place chocks in front of 
and behind the wheels of the other axle.

3.

Set the parking brake to the "Driving" 
position.

4.

Completely unscrew the spindle of the spring 
brake cylinder.

5.

Turn the brakes back completely by turning 
the hexagonal adjusting bolt counter-
clockwise. During this operation, clicks will 
be heard.

6.

Remove the split pin and yoke pin (A).

7.

Remove attachment nut (B) from the control 
plate.

8.

Turn the hexagonal adjusting bolt anti-
clockwise, so that the slack adjuster is 
released from the yoke.

9.

Remove attachment bolt (C) with the 
retaining plate and adjusting rings.

10. Remove the slack adjuster.

Note:
It is possible that during the installation 
of the slack adjuster the brake camshaft will 
be pushed inwards. This can be prevented 
by fitting a bolt in the brake camshaft, so that 
during installation of the slack adjuster the 
brake camshaft can be held in position.

R600141

A

C

B

BRAKE SYSTEM AND COMPONENTS

3-10

©

 200423

Removal and installation

5

ΧΦ65/75/85 series

6

Installation, automatic slack adjuster
1.

Check the splines of the brake camshaft for 
damage and wear, and re-grease them.

2.

Fit the spacer so that the slack adjuster is in 
line with the yoke.

3.

Slide the slack adjuster onto the brake 
camshaft. Note the arrow indicating the 
direction of rotation during braking.

4.

Turn the hexagonal adjusting bolt clockwise 
until the holes in it and the yoke engage.

5.

Insert the yoke pin with split pin.

6.

Lubricate the attachment bolt with Loctite 
and fit the bolt with the retaining plate.

7.

Check the axial play of the slack adjuster. 
See "Technical data". Check that the control 
plate can still be moved.

R600142

©

 200423

3-11

Removal and installation

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

8.

Turn the control plate as far as possible 
(until the internal stop is felt) in the direction 
in which the slack adjuster is moved during 
braking. Fix the control plate in this position 
using the attachment nut on the fixed 
bracket.

9.

Adjust the brakes. See "Inspection and 
adjustment".

R600143

BRAKE SYSTEM AND COMPONENTS

3-12

©

 200423

Removal and installation

5

ΧΦ65/75/85 series

6

3.7 REMOVAL AND INSTALLATION, BRAKE DRUM

Removal, brake drum
1.

Pressurise the air system.

2.

Place chocks in front of and behind the 
wheels of an axle on which you are not 
working.

3.

Release the parking brake by means of the 
parking brake valve or by removing the 
release bolts from the spring brake cylinders.

4.

Turn the automatic slack adjuster back 
completely.

5.

Unscrew the wheel nuts.

6.

Jack up the axle in question.

7.

Support the axle with stands.

8.

Remove the wheels.

9.

Remove the two attachment bolts (A) from 
the brake drum.

10. Insert two jack screws in the threaded 

holes (B).

11. Note:

Never use a pneumatic tool for tightening the 
jack screws.
Tighten them evenly by hand. This brings the 
brake drum to pressure. Use a copper punch 
to work the brake drum from the hub. 
Use lifting gear to remove the brake drum.

Installation, brake drum
1.

Clean the fitting edge of the brake drum and 
the wheel rim with a steel wire brush.

2.

Then smear the fitting edge lightly with 
grease. This grease layer should prevent the 
brake drum from rusting tight.

3.

Remove the jack screws from the brake 
drum.

4.

Fit the brake drum using the lifting gear.

5.

Fit two wheel nuts opposite one another.

6.

Tighten these wheel nuts evenly until the 
brake drum is correctly on the hub.

7.

Remove the wheel nuts.

8.

Fit the attachment bolts for the brake drum.

R600144

B

B

A

A

 

 

 

 

 

 

 

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