Inspect condition of brake disks - AP42.10-P-4258RQ

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MODEL 197.3/4 without CODE B07 (Ceramic brake system)

Fig 1: Inspecting Brake Disks Condition

Courtesy of MERCEDES-BENZ USA

	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Remove/install
1	Remove wheels
	Remove wheels		AR40.10-P-1100RQ
	Check
2	Check brake disks (1) at front and rear axle	Inspect for scores and cracks. Hairline cracks can occur due to high stress. Brake disks (1) do not have to be replaced when the crack length (2) is a maximum of 25 mm. Measure crack length (2) including the bore diameter. For cracks and scores which have split open and are deeper than 0.5 mm: ↓ Replace brake disks (1).
		Remove/install brake disk, brake caliper and brake pads of the front wheel brake	AR42.10-P-0225RQ
		Removing/installing brake disk, brake caliper and pads of rear wheel brake	AR42.10-P-0250RQ
	Measure
3	Measure thickness of brake disks on front and rear axles using caliper gauge (010)	Observe recommended limit dimensions, so that the wear limit is not undershot before the next brake pad change.
		Brake disk thickness	*BE42.10-P-1001-08R
		Brake disk thickness	*BE42.10-P-1001-09R
		Caliper gauge If necessary: Replace brake disks (1).	Figure
		Remove/install brake disk, brake caliper and brake pads of the front wheel brake	AR42.10-P-0225RQ
		Removing/installing brake disk, brake caliper and pads of rear wheel brake	AR42.10-P-0250RQ
4	Install in the reverse order

CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number	Designation			MODEL 197 except CODE B07
BE42.10-P-1001-08R	Brake disk thickness	New	mm	36
BE42.10-P-1001-08R	Brake disk thickness	Wear limit	mm	33

CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number	Designation			MODEL 197 without CODE B07 (Ceramic brake system)
BE42.10-P-1001-09R	Brake disk thickness	New	mm	26
BE42.10-P-1001-09R	Brake disk thickness	Wear limit	mm	24

Fig 2: Identifying Caliper Gauge (140 589 00 19 00)

Courtesy of MERCEDES-BENZ USA