DAF LF45, LF55 Series. Manual - part 435

©

 200436

1-5

Brake system and components

TECHNICAL DATA

ΛΦ45/55 series

6

0

RELAY VALVE
Fitted with internal filter and silencer

EMPTY/LOAD RELAY VALVE

1

0

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

P

2

 

(bar)

P

4 

(bar)

R 600363

0

1

2

3

4

5

6

7

8

9

10

1

0,25 

P41(bar)

P2(bar)

R600330

2

3

4

5

6

7

8

9

10

0,1

+

P

42 

= P

41

P

42 

= 0

1:2.7

Maximum reduction ratio

1 : 2.7

Actuating pressure

0.25 bar

Fitted with internal filter and silencer

TECHNICAL DATA

1-6

©

 200436

Brake system and components

0

ΛΦ45/55 series

6

ABS VALVE

Electrical connections

ASR solenoid valve

TRAILER VEHICLE CONTROL VALVE
Knorr model

Advance

Resistance of magnet coil

15 

≥ 5 ohm at 25C

1

2

3

2

1

1

2

3

3

R600370

1.

Bleed magnet coil

2.

Earth

3.

Aerate magnet coil

1

3

2

R600484

1.

Supply

2.

Port, two-way valve

3.

Bleed

Type:

AC 597BA

Input pressure

3 bar

Output pressure

3.2 bar

(equals 0.2 bar advance = factory setting)

©

 200436

1-7

Brake system and components

TECHNICAL DATA

ΛΦ45/55 series

6

0

Advance adjustment
Adjusting screw (Allen type, 6 mm)

Clockwise increases the advance

Anti-clockwise decreases the advance

Knorr model

Advance

Advance adjustment
Adjusting screw (Allen type, 6 mm)

Clockwise increases the advance

Anti-clockwise decreases the advance

PARKING BRAKE VALVE WITH TRAILER 
VEHICLE CONNECTION

Wabco model

Type:

AC 597C

Input pressure

3 bar

Output pressure

3.5 bar

(equals 0.5 bar advance = factory setting)

Type:

961 723 134 0

Max. output pressure in driving position

approx. 8 bar

TECHNICAL DATA

1-8

©

 200436

Brake system and components

0

ΛΦ45/55 series

6

PARKING BRAKE VALVE WITHOUT TRAILER 
VEHICLE CONNECTION
Wabco model

BRAKE PADS

Knorr model

Type:

961 723 036 0

Max. output pressure in driving position

approx. 8 bar

R600489

A

B

F

E

D

C

Maximum brake block thickness (C)

30 mm

Maximum lining thickness (E)

2 mm (at the thinnest point)

Minimum brake block thickness (F)

11 mm (at the thinnest point) with 9mm rear plate 

thickness (D)

Replacing:

all brake pads at the same time for each axle, and 

with the specified lining only.