DAF CF65, CF75, CF85 Series . Manual — part 918

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200423

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Removal and installation

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

4.

Place the upper punch carefully in position
and gradually increase the force (this will
result in the upsetting of the rivet shank i.e.
filling the hole, and the formation of a collar
on the shank).

5.

Check the joints made for the following
points:
-

the collar formed on the shank must be
uniform all round and not flattened on
one side. If this is not the case:

-

the holes in the lining and brake shoe
are not in line.

-

the brake shoe was not held level during
the riveting process.

-

the rivets are wrong.

-

there must be no cracks in the collar
formed on the shank of the rivet.
If cracks are present, the clamping force
was too high.

-

the newly formed collar must abut the
brake shoe closely. Mark the halves
again if this is not the case.

-

the head of the rivet must not be forced
to one side in the lining. This can be
checked, for example, with the depth
measurement part of a calliper gauge
or visually by the asymmetrically formed
collar on the shank. If the head of the
rivet has been forced to one side in the
lining, the holes in the lining and the
brake shoe are out of alignment or the
brake shoe was not held level during the
riveting process.

6.

Check the brake lining for cracks around the
rivet head. If this is the case, the riveting
force was too high or the hole drilled in the
brake lining was too small. To prevent the
appearance of cracks, the diameter of the
hole in the lining must be approx. 0.5 mm
larger than the hole in the brake shoe.

R600136

R600134

R600138

BRAKE SYSTEM AND COMPONENTS

3-22

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Removal and installation

5

ΧΦ65/75/85 series

6

7.

If the joint is found to be in order, continue
to rivet the lining. Make sure that the lining is
pressed firmly against the shoe at each
riveting point. Work from the centre towards
the ends, alternately from one end to the
other. Follow this procedure for each set of
two rivets. This will ensure that the lining is
evenly bedded down over the entire length.

Checking the riveted joints
1.

Now check all the riveted joints in the manner
described, and use a feeler gauge to
measure any play between lining and brake
shoe. At the side this play may not exceed
0.1 mm with mechanical air brakes.
-

It must not be possible to slide the feeler
gauge further than the first row of rivets.

-

At the end of the lining, the play up
to the first row of rivets must not exceed
0.1 mm in the case of mechanical air
brakes.

-

No play at all is allowed for a distance
of 5 mm around the rivets.

R600139

4

2

1

3

R600140

max. 0,1mm

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200423

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Removal and installation

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

3.11 REMOVAL AND INSTALLATION, BRAKE SHOE BEARING

Anchor pin bearing
1.

Remove the brake shoes.

2.

Force the new bearing bushes into the brake
shoe. Check whether the anchor pins can
rotate in the new bearing bushes.

3.

Fit the brake shoes.

R600148

BRAKE SYSTEM AND COMPONENTS

3-24

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Removal and installation

5

ΧΦ65/75/85 series

6

Cam roller bearing
The spindles for the roller brake cams can be
locked in two ways:
-

locking by means of a spindle and two spring
pins.

-

locking by means of spindle with knurled
edge.

For the model of the spindle with knurled edge,
the following should be remembered:
-

The first time the spindle with the knurled
edge is fitted is during production.
The spindle may be fitted a maximum of
THREE TIMES on one side of the brake
shoe. Every time it is REINSTALLED,
a mark must be made on the brake shoe with
a centre point.
Two centre points indicate that the spindle
must be fitted in the REVERSE direction the
next time.
Here too, the spindle may not be fitted more
than three times.
After the spindle is fitted three times on the
other side of the brake shoe, the brake shoe
MUST be renewed.

Removal, cam roller bearing
1.

Remove the brake shoes.

2.

If fitted, remove the spring pins.

3.

Force the spindle from the brake shoe.
For the version with the knurled edge, force
the spindle from the shoe in such a way that
the knurled edge is not forced through the
entire brake shoe.

Installation, cam roller bearing
1.

Check the brake shoe, spindle and cam
roller for damage. Replace if necessary.

2.

Force the new bearing bush into the cam
roller.

3.

Force the spindle into the brake shoe with
the cam roller. For the version with the
knurled edge, mark the spindle as indicated
in this chapter.

4.

Fit the brake shoes.

R600149

R600150