Check thickness and condition of brake disks

AR42.10-T-0120B

19.11.09

MODEL 613.355 with FRONT AXLE 739.234 with REAR AXLE 745.990 /996 /997
with Lucas disc brake system D3

MODEL MODEL 613.455 /485 with FRONT AXLE 739.234 with REAR AXLE 745.996
with Lucas D3 disc brake system

MODEL 613.364 /365
with VOSE front axle for O560,
with Lucas D3 disk brake system

MODEL MODEL 613.358 /388 with FRONT AXLE 739.234 with REAR AXLE 745.997
with Lucas D3 disc brake system

W42.10-0009-02

W42.10-0008-02

Brake disc dimension

1 Brake disk

A Total thickness of new brake disk

B Wear limit

C Chamfer = Degree of brake disk wear per side

Possible conditions of brake disc surface

A1 Network-like crack formation

B1 Cracks running towards the center of the wheel hub

C1 Unevenness in the brake disk surface

D1 Through-cracks

a Friction ring surface

b Breadth and depth of cracks

	Checking
1	Remove wheels		AR40.10-T-1100B
2	Measure thickness of brake disks (1)	Vernier caliper
		Front axle	*BE42.10-N-1001-08E
		Rear axle If the repair limit is reached: 	*BE42.10-N-1001-09E
		Replace brake disk.	AR42.10-T-0220B
3	Check brake disk (1) for galling and cracks	 Net-like crack formation (A1) or cracks running towards the center of the wheel hub (75 % of rubbing ring surface, max. 1.5 mm wide and deep), continuous cracks (B1) and unevenness of brake disc surface (C1) up to 1.5 mm are permissible. If necessary: 
		Skim brake disk.  This is only permissible if the wear limit for brake pads with 8mm or 10mm backplates has not yet been reached.	AR42.10-T-0110B
		Front axle	*BE42.10-N-1001-08E
		Rear axle	*BE42.10-N-1001-09E
		 If cracks run right through:
		Replace brake disk.	AR42.10-T-0220B

Test values for front brake disks

Number	Designation				Models 613.355/358/388/455/485 with front axle 739.234	Model 613.364/365 with VOSE front axle


BE42.10-N-1001-08E	Brake disc thickness	New		mm	45	45
		Repair limit for brake pads with	8 mm carrier plate	mm	42	42
			10 mm carrier plate	mm	39	39
			Standard size	mm	-	-
			Oversize	mm	-	-
		Wear limit for brake pads with	8 mm carrier plate	mm	41	41
			10 mm carrier plate	mm	38	38
		Wear limit	absolute	mm	35	35

Test values for rear brake disks

Number	Designation				Model 613.355 with HA 745.990/996/ 997 rear axle	Model 613.455 / 485 with rear axle 745.996


BE42.10-N-1001-09E	Brake disc thickness	New		mm	45	45
		Repair limit for brake pads with	8 mm carrier plate	mm	42	42
			10 mm carrier plate	mm	39	39
		Wear limit for brake pads with	8 mm carrier plate	mm	41	41
			10 mm carrier plate	mm	38	38
		Wear limit absolute		mm	35	35

Test values for rear brake disks

Number	Designation				Model 613.358/388 with rear axle 745.997


BE42.10-N-1001-09E	Brake disc thickness	New		mm	45
		Repair limit for brake pads with	8 mm carrier plate	mm	42
			10 mm carrier plate	mm	39
		Wear limit for brake pads with	8 mm carrier plate	mm	41
			10 mm carrier plate	mm	38
		Wear limit absolute		mm	35