DAF LF45, LF55 Series. Manual - part 436

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1-9

Brake system and components

TECHNICAL DATA

ΛΦ45/55 series

6

0

Wabco PAN 17 version:

Wabco PAN 19-1+ and PAN 19-2 versions:

BRAKE DISC

Knorr model

Note:

If it is established during brake pad replacement 

that the brake thickness is less than or equal to 

39 mm, the brake disc must also be replaced.

Maximum brake block thickness (C)

26 mm

Maximum lining thickness (E)

2 mm (at the thinnest point)

Minimum brake block thickness (F)

9 mm (at the thinnest point) with 7mm rear plate 

thickness (D)

Replacing:

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

with the specified lining only.

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.

R600489

A

B

F

E

D

C

Maximum brake disc thickness (A)

45 mm

Minimum brake disc thickness (B)

37 mm (rejection dimension, disc must be 

replaced)

Minimum thickness, turning dimension

40 mm

TECHNICAL DATA

1-10

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Brake system and components

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ΛΦ45/55 series

6

The following signs of wear are permissible:

Not permissible:

Wabco model
PAN 17 version:

The following signs of wear are permissible:

Not permissible:

Brake disc wobble 0.15 mm

max. 0,75 x a

max. 1,5 mm

R600471

A

1

                   

B

1

D

1

                    

C

1

a

A1

Crazy cracking.

B1

Cracks running to the centre up to 1.5 mm 

wide and deep, max. 0.75 x friction 

surface width (a).

C1

Unevenness in the disc surface up to 

1.5 mm.

D1

Through-going cracks.

Maximum brake disc thickness (A)

34 mm

Minimum brake disc thickness (B)

28 mm (rejection dimension, disc must be 

replaced)

Minimum thickness, turning dimension

30 mm

A1

Crazy cracking.

B1

Cracks running to the centre up to 1.5 mm 

wide and deep,
max. 0.75 x friction surface width (a).

C1

Unevenness in the disc surface up to 

1.5 mm.

D1

Through-going cracks.

A

R600508

A

Measuring distance is 35 mm

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Brake system and components

TECHNICAL DATA

ΛΦ45/55 series

6

0

PAN 19-1+ and PAN 19-2 versions:

The following signs of wear are permissible:

Not permissible:

Brake disc wobble 0.15 mm

BRAKE CALLIPER
Knorr model

Wabco model

Maximum brake disc thickness (A)

45 mm

Minimum brake disc thickness (B)

38 mm (rejection dimension, disc must be 

replaced)

Minimum thickness, turning dimension

40 mm

A1

Crazy cracking.

B1

Cracks running to the centre up to 1.5 mm 

wide and deep,
max. 0.75 x friction surface width (a).

C1

Unevenness in the disc surface up to 

1.5 mm.

D1

Through-going cracks.

A

Measuring distance is 35 mm

R600708

A

R600712

Y - X

Brake calliper play in axial direction (direction A)

0.6 - 1.0 mm

Brake calliper play on guide bushes ("Y" - "X")

max. 2.0 mm

Play between brake calliper carrier and brake 

pads ("Y" - "X" direction)

0.3 - 0.9 mm

Play between brake pad/brake disc:
Manually adjustable brake pad/brake disc play 

after fitting brake pads:

0.7 mm

TECHNICAL DATA

1-12

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Brake system and components

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ΛΦ45/55 series

6

1.2 TIGHTENING TORQUES

The tightening torques stated in this section are 

different from the standard tightening torques 

stated in the overview of the standard tightening 

torques. The other threaded connections not 

specified must therefore be tightened to the 

torque stated in the overview of standard 

tightening torques.

When attachment bolts and nuts are replaced, it 

is important that - unless stated otherwise - these 

bolts and nuts are of exactly the same length and 

property class as those removed.

QUICK-RELEASE COUPLING

SPRING BRAKE CYLINDER

BRAKE CYLINDER

BRAKE CALLIPER - BRAKE CARRIER, Knorr 

model

(1) Always use new bolts, provided with locking compound. 

New bolts are supplied with locking compound already 

applied.

Parker

20 - 30 Nm

Attachment nuts

195 Nm

Release bolt

70 Nm

Clamping strip attachment nut

40 Nm

Attachment nuts

195 Nm

Sliding sleeve Allen screws (SB7000)

285 Nm

(1)

Sliding sleeve Allen screws (SN7000)

180 Nm + 90



(1)

Pressure tool, guide bush bellows

8 Nm

Rubber bearing bush pressure tool (only 

SN7000)

8 - 45 Nm

R600744