DAF CF65, CF75, CF85 Series . Manual — part 865

©

200423

1-1

Brake system and components

TECHNICAL DATA

ΧΦ65/75/85 series

6

0

1. BRAKE SYSTEM AND COMPONENTS

1.1 GENERAL

Coding of components
All components have been provided with number
codes.

Structure of the code

First digit
Where one connection performs several
functions, additional 1

st

digits will be allocated.

These are separated by a hyphen.

Second digit
If there are several connections with the same
function, a 2

nd

digit will be added immediately

after the 1

st

one.

Application example: empty/load relay valve

Often used:
1

energy supply (pressure)

2

energy discharge (outgoing command)

3

bleeding

4

control connection (incoming command)

Little used:
0

suction connection

5

vacant

6

vacant

7

anti-freeze connection

8

lubricating oil connection

9

coolant connection

Meaning:
1

air compressor energy supply

2

energy discharge (command) to the next
component

41

control connection (incoming)

42

second control connection (incoming)

TECHNICAL DATA

1-2

©

200423

Brake system and components

0

ΧΦ65/75/85 series

6

Compressor

CF65 series

Type

CF75/85 series

Type

Rejection sizes Wabco 911 504 ... compressor

Make:

Knorr SWC 9057

Version:

1 cylinder, water cooled, 255 cc

Make:

Wabco 911 504 ...

Version:

2 cylinder, water cooled

Cylinder bore at the turning point of the
first piston ring

75.022 mm

Height of piston ring groove:
first groove:

2.035 mm

second groove:

2.035 mm

third groove:

4.047 mm

Gudgeon pin hole diameter:

15.018 mm

Gudgeon pin diameter:

14.992 mm

Piston diameter, measured along the length of
the piston pen on the underside of the piston skirt.

74.962 mm

Gudgeon pin bearing in connecting rod:

15.047 mm

Crankshaft bearing diameter, non-drive side:

35.070 mm

Crankshaft main bearing, non-drive side:

34.963 mm

Crankshaft diameter at the connecting rod:

32.963 mm

Always replace rolling bearing on drive side

©

200423

1-3

Brake system and components

TECHNICAL DATA

ΧΦ65/75/85 series

6

0

Air supply unit

Knorr ZB4545 - II38005F, ZB4578 - K000394, ZB4580 - K000396 versions

(used on front-axle leaf suspension)

24

21

1

F

D

N

J

K

L

M

H

P

3

A

E

C

G

1

12

26

22

21

23

3

23 25

P

U

6.2
6.3
6.4

6.1

6.2

P

U

6.5
6.6
6.7

B

R600702

0

Knorr ZB4548 - II38799F, ZB4579 - K000395 versions (used on front-axle leaf suspension)

24

21

2

1

R

3

1

26

22

21

29

11

23

3

23 25

P

U

6.2
6.3
6.4

6.1

6.2

P

U

6.5
6.6
6.7

R600703

0

1

2

Q

F

M

P

E

C

G

A

B

D

N

J

H

K

L

12

A

air dryer/pressure regulator (unit)

K

pressure limiting valve, circuit 3

B

4-circuit protection valve (unit)

L

pressure relief valve, circuit 3

C

filter/drying grid

M

flow back valve, circuit 3

D

pressure regulator

N

pressure relief valve with bypass, circuit 4

E

blow-off valve

P

pressure sensors

F

pneumatic time switch for regeneration

Only for use on front-axle air suspension:

G

heating element

Q

pressure relief valve

H

pressure relief valve with bypass, circuit 1

R

non-return valve

J

pressure relief valve with bypass, circuit 2

TECHNICAL DATA

1-4

©

200423

Brake system and components

0

ΧΦ65/75/85 series

6

pressure sensor reading, circuits 1 and 2
(connections 6.2 - 6.7 in the diagrams above)

Pressure relief valve

supply pressure in circuit 1, connection 21

9.8 - 10.6 bar

supply pressure in circuit 2, connection 22

9.8 - 10.6 bar

supply pressure in circuit 3, connection 23

8.1 - 8.5 bar

supply pressure in circuit 3, connection 25

7.9 - 8.5 bar

supply pressure in circuit 4, connection 24

9.8 - 10.6 bar

supply pressure in circuit 4, connection 26

9.8 - 10.6 bar

opening pressure of circuits 1, 2 and 4

6.5 - 7.0 bar

opening pressure of circuit 3

7.0 - 7.5 bar

Static closing pressure, all circuits

 4.5 bar

circuit 1 activation pressure for flow-back function
of circuit 3

 4.5 bar

cut-out pressure of pressure regulator

9.8 - 10.6 bar

cut-in pressure of pressure regulator

1.0 - 1.8 bar below the cut-out pressure

safety valve opening pressure

12.8 - 13.2 bar

cut-in temperature of heating element

7

C

cut-out temperature of heating element

29

C

re-set time

approx. 20 sec.

1V

0V

2V

3V

4V

5V

12

0

2

4

6

8

10

P

21.22

(bar)

U

a

(V)

R600701

overflow pressure

10.0 bar