DAF CF65, CF75, CF85 Series . Manual — part 929

©

200423

4-3

Disassembly and assembly

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

9.

Remove the split ring between fork and
spring retainer. The spring retainer
and spring can now be removed.

Assembly, brake chamber
1.

Apply pressure to connection point (12)
(min. 6.0 bar).

2.

Install the diaphragm.

3.

Place the spring and spring retainer on the
yoke, and fit the split ring.

4.

Place the front cover of the brake chamber
on the yoke and press the cover downwards
against the spring tension. Place a wrench
on the yoke rod at the assembly surface of
the brake chamber.

5.

Place the complete front cover on the brake
chamber and fit the clamping strap,
tightening it to the specified torque.
See "Technical data". Remove the wrench.

6.

Fit the flexible bleed pipe with the sinter filter
fitted at the brake chamber side. Ensure that
the filter is correctly mounted in the flexible
bleed pipe to prevent any dirt from entering
the spring brake section.

R600195

R600195

R600196

BRAKE SYSTEM AND COMPONENTS

4-4

©

200423

Disassembly and assembly

5

ΧΦ65/75/85 series

6

Disassembly, spring brake section
1.

Remove the flexible bleed pipe with the
internal sinter filter.

2.

Apply marks to the two halves of the spring
brake cylinder housing.

3.

Remove the clamping pin from the release
bolt and remove the nut, washer and O-ring
from the release bolt.

4.

Using an Allen key, screw the release bolt
into the spring brake cylinder until it falls
freely into this cylinder.

5.

Remove the three screws and the instruction
plate on the rear of the spring brake cylinder.

R600197

R600198

R600199

©

200423

4-5

Disassembly and assembly

BRAKE SYSTEM AND COMPONENTS

ΧΦ65/75/85 series

6

5

6.

Place the complete spring brake cylinder
in the special tool (DAF no. 0484840)
and tighten the spring brake cylinder on the
special tool using two nuts.

7.

Apply pressure to connection point (11).
The yoke can now be removed from the
brake chamber. Place a wrench on the yoke
rod at the assembly surface of the brake
chamber. Now bleed the brake chamber.

8.

Place the special tool (DAF no. 0484845)
on the spring brake cylinder; then turn the
tool until it is under pressure.

9.

Remove four of the eight attachment bolts at
the circumference of the spring brake
cylinder and fit four studs, each with two
nuts, in their place. Studs, length approx.
210 mm, must be self-made.

10. Remove the four remaining attachment

bolts.

11. Release the tool and thus the spring.

Remove the various spring brake
components from the special tool.

R600200

R600201

R600202

BRAKE SYSTEM AND COMPONENTS

4-6

©

200423

Disassembly and assembly

5

ΧΦ65/75/85 series

6

Assembling the spring brake section
1.

Insert the top spring retainer in the spring
brake cylinder.

2.

Fit a new, greased sleeve on the lower spring
retainer.

3.

Fit a new O-ring and sealing ring in the
intermediate housing of the spring brake
cylinder.

4.

Fit the bottom spring retainer, greased,
in the intermediate housing.

5.

Place the spring on the bottom spring
retainer.
The end of the spring should be placed
against the cam in the spring retainer.

6.

Place the spring brake cylinder and the
auxiliary tool over the spring.

7.

Fit four studs in the attachment holes.
Pay attention to the marks.

8.

Using the special tool, apply pressure
to the spring, so that the two halves of the
housing come into contact with one another.
The studs also serve as guides.

9.

Install four attachment bolts and tighten them
to the specified torque. See "Technical data".

10. Remove the studs and tighten the remaining

four attachment bolts to the specified torque.

11. Remove the wrench.

12. Remove the complete spring brake cylinder

from the special tool.

13. Assemble the spring brake cylinder in such

a way that the release bolt in the spring
brake cylinder touches the top spring
retainer. Screw the release bolt into the
spring retainer.

14. Fit the O-ring and sealing ring on the release

bolt. Fit the nut and clamping pin, and tighten
the release bolt using the specified torque.
See "Technical data".

R600203

R600204