DAF CF65, CF75, CF85 Series . Manual — part 912

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200423

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Inspection and adjustment

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

2.

Push the brake calliper as far as possible
towards the brake calliper support (C).

3.

Measure the distance "X".

4.

Push the reversed brake calliper as far as
possible towards the brake calliper
support (D).

5.

Measure the distance "Y".

6.

Calculate the difference between
the measured distances, "Y" - "X"
(see "Technical data").

7.

Fit the brake pads.

X

R600710

C

Y

R600711

D

BRAKE SYSTEM AND COMPONENTS

2-34

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Inspection and adjustment

5

ΧΦ65/75/85 series

6

2.22 BRAKE ADJUSTMENT, DRUM BRAKE VERSION

Set the brakes by turning the hexagonal adjusting
bolt clockwise.

Turn the adjusting bolt until the brake lining abuts
the brake drum.
Then turn the adjusting bolt back (90

 - 120)

until the bake lining is just free of the brake drum.

R600253

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200423

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Inspection and adjustment

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

2.23 BRAKE ADJUSTMENT, DISC BRAKE VERSION

1.

Position a feeler gauge between the rear
of the brake pad and one of the thrust
pieces of the brake calliper to check the play.
Compare the measured value
(see "Technical data").

2.

If the play is not correct, it needs to be
adjusted. Remove the covering cap from
the slack adjuster.

3.

Fit a ring spanner on the adapter and turn
the hexagonal adjusting bolt together with
the adapter anti-clockwise until there is
ample clearance between the brake pads
and the brake disc.

Note:
Never turn the hexagonal adjusting bolt
without using an adapter. The adapter
is a torque safety and will break off when the
torque is too high. Without the use of an
adapter the mechanics in the brake calliper
may become damaged when the torque
is too high, so that replacement of the brake
calliper may be necessary.

4.

Position a feeler gauge with the correct
thickness between the brake pad and the
thrust piece of the adjuster with the
hexagonal adjusting bolt. See "Technical
data".

5.

Turn the hexagonal adjusting bolt clockwise
with the ring spanner and the adapter until
the feeler gauge just fits. Remove the feeler
gauge.

6.

Apply the brake a number of times so that the
play can set.

7.

Release the brake. Now it should be possible
to turn the hub by hand.

8.

Position a feeler gauge between the
rear of the brake pad and one of the thrust
pieces of the brake calliper to check the play.
Compare the measured value
(see "Technical data").

9.

After the inspection, lightly grease the
sealing cap and replace it on the slack
adjuster. See "Technical data".

23

37

1

R600463

BRAKE SYSTEM AND COMPONENTS

2-36

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200423

Inspection and adjustment

5

ΧΦ65/75/85 series

6

2.24 INSPECTION, AIR TIGHTNESS

Air tightness
If the brake system of a vehicle has been charged
to the maximum pressure, it should generally be
possible to drive the vehicle away after a period
of 16 hours of uninterrupted standstill, without
first having to charge the brake system to
sufficient operating pressure.
This implies a maximum pressure drop of approx.
0.4 bar per hour at normal system pressure.

Note:
Always connect auxiliary consumers and
accessories to circuit 4.