Check Thickness And Condition Of Brake Disks - AR42.10-P-0120LWG

Model 213, 253, 293 

Courtesy of MERCEDES-BENZ USA

Shown on right side of vehicle on model 253, except code B07 (Ceramic brake system) 

	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 handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
	Notes on handling, transport and storage of ceramic brake disks		AH42.10-P-9406-13A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove
1	Remove wheel and tire assemblies.		AR40.10-P-1102A
	Measure
2	Measure thickness of brake disk (1) on front and rear axle using vernier caliper.	Model 213, 253 except code B07 (Ceramic brake system) Model 293
		Model 293 Brake disk thickness	BE42.10-P-1001-08IA
		Model 293 Brake disk thickness	BE42.10-P-1001-09GA
		Model 253 except code B07 (Ceramic brake system) Brake disk thickness	*BE42.10-P-1001-09Y
		Model 213 except code B07 (Ceramic brake system) Brake disk thickness	BE42.10-P-1001-09ZA
		Model 253 except code B07 (Ceramic brake system) Brake disk thickness	*BE42.10-P-1001-08BA
		Model 213 except code B07 (Ceramic brake system) Brake disk thickness	BE42.10-P-1001-08CA
		Caliper gauge If the wear limit has been exceeded or will be exceeded before the next brakepad change.	Fig 1
		↓ Replace brake disk (1) in a pair. Model 213, 253	AR42.10-P-0220EWE
		Remove/install brake disk (1) on front axle Model 293	AR42.10-P-0230EQ
		Remove/install brake disk (1) on rear axle Model 293	AR42.10-P-0240EQ
	Check
3	Check brake disk (1) on front and rear axle for corrosion, score marks, cracks and chippings.	Model 213, 253 except code B07 (Ceramic brake system) Model 293 For a brake disk (1) that is perforated or has sunk holes, assess crack length (x) including bore diameter.
		Model 293 Check brake disks	BE42.10-P-1002-09GA
		Model 293 Check brake disks	BE42.10-P-1002-08IA
		Model 253 except code B07 (Ceramic brake system) Check brake disks	*BE42.10-P-1002-09Y
		Model 213 except code B07 (Ceramic brake system) Check brake disks	BE42.10-P-1002-09ZA
		Model 253 except code B07 (Ceramic brake system) Check brake disks	*BE42.10-P-1002-08BA
		Model 213 except code B07 (Ceramic brake system) Check brake disks In the event of a problem, ↓ Replace brake disk (1) in a pair.	BE42.10-P-1002-08CA
		Model 213, 253	AR42.10-P-0220EWE
		Remove/install brake disk (1) on front axle Model 293	AR42.10-P-0230EQ
		Remove/install brake disk (1) on rear axle Model 293	AR42.10-P-0240EQ
4.1	Check brake disk (1) for wear.	Model 213, 253 with code B07 (Ceramic brake system) Check brake disk (1) for wear using wear indicators.
	Notes on evaluating brake disks	Model 213, 253 with code B07 (Ceramic brake system)	AH42.10-P-9406-07RQ
		In the event of a problem, ↓ Replace brake disk (1) in a pair.	AP42.10-P-4258-02RQ
		Model 213, 253	AR42.10-P-0220EWE
	Risk of injury  to skin and eyes from laser beams	Never look directly into the laser beam. Do not attempt to suppress natural reflex of closing the eyelids. Avoid direct skin contact with the laser beam. If damage to the eye is suspected, consult an eye specialist immediately.	AS30.30-Z-0001-01A
4.2	Check brake disk (1) for wear.	Check brake disk (1) for wear using Carboteq measurement method.
	Notes on evaluating brake disks	Model 213, 253 with code B07 (Ceramic brake system) Check brake disks for wear Model 213, 253 with code B07 (Ceramic brake system) In the event of a problem, ↓ Replace brake disk (1) in a pair.	AH42.10-P-9406-07RQ AR42.10-P-0264-01RG
		Model 213, 253	AR42.10-P-0220EWE
	Install
5	Attach wheel and tire assemblies.		AR40.10-P-1102A

Fig 1: Identifying Caliper Gauge (140 589 00 19 00)

Courtesy of MERCEDES-BENZ USA