DAF CF65, CF75, CF85 Series . Manual — part 1195

©

200423

3-19

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΧΦ85 series

5

3.24 INSPECTING THE AUTOMATIC BRAKE ADJUSTER

Brake drum

Inspection, brake adjuster travel
1.

Measure the basic setting L1.

2.

Measure the position when the brakes are
applied, L2 (minimum brake system
pressure 6 bar).

3.

Calculate the brake stroke L3 = L2 - L1, see
"Technical data". If the brake stroke differs
from the specified value, take the following
action:

4.

Check whether the control plate (1) is locked
in respect of the fixed bracket.

5.

If not, turn the control plate as far as possible
(until the internal stop is felt) in the direction
in which the brake adjuster is moved during
braking.

6.

Fix the control plate in this position using the
attachment nut on the fixed bracket.

7.

Check the internal slip using a torque
wrench.

Inspection, internal slip
1.

Make certain that there is sufficient pressure
in the reservoirs (6.5 bar minimum).

2.

Release the parking brake.

3.

Fit a torque wrench on the hexagonal
adjusting bolt and turn this counter-
clockwise. For the permitted value, see
"Technical data".
If the specified reverse torque is not
reached, but the worm shaft already turns at
a lower value, the brake adjuster should be
replaced.

M6101

L2

L1

M6005

1

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

3-20

©

200423

Inspection and adjustment

5

ΧΦ85 series

3.25 CHECKING THE BRAKE CYLINDER FASTENING

1.

Check that the brake cylinders do not move
during operation of the service brake.

©

200423

3-21

Inspection and adjustment

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

ΧΦ85 series

5

3.26 INSPECTION, BRAKE LINING THICKNESS

Inspecting the brake lining thickness
(FTP axle excepted)
1.

Pressurise the air brake system (pressure
regulator should cut out) and make sure that
the vehicle's parking brake is not engaged.

2.

Check the brake lining thickness through the
openings in the dust cover.

3.

Replace the brake lining if it is worn down to
the wear indicator mark on the lining.

Note:
If in doubt about the amount of brake lining
wear, release the brakes and remove the
dust cover.

Inspecting the brake lining thickness
(FTP axle)
1.

Pressurise the air brake system (pressure
regulator should cut out) and make sure that
the vehicle's parking brake is not engaged.

2.

Check the brake lining thickness through the
openings in the dust cover.

3.

Replace the brake lining if it is worn down to
the wear indicator mark on the lining.

Note:
If in doubt about the amount of brake lining
wear, release the brakes and remove the
dust cover.

M6012

M6002

R6 00 677

EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES

3-22

©

200423

Inspection and adjustment

5

ΧΦ85 series

3.27 CHECKING THE BRAKE SHOE THICKNESS AND BRAKE DISC

Version: Knorr SB 7000
1.

Check whether guide bush (4) protrudes
from guide sleeve (6) (C).
If the guide bush (4) is level with the guide
sleeve (6) (see detail A) the brake shoe and
brake disc thicknesses should be checked.

C

1

4

6

R600481

A