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

Model 290 

Shown on right side of vehicle except code B07 (AMG - ceramic brake system) 

Courtesy of MERCEDES-BENZ USA

	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
Notice	Notes on evaluating brake disks with and without wear holes		AH42.10-P-9406-14A
Notice	Notes on handling, transport and storage of ceramic brake disks		AH42.10-P-9406-13A
Notice	Notes on handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
	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 disks (1) on front and rear axles using vernier caliper.	Model 290 except code B07 (AMG - ceramic brake system)
		Model 290.658/659/661/688/689 except code B07 (AMG - ceramic brake system) Brake disk thickness	*BE42.10-P-1001-08GA
		Model 290.658/659/661/688/689 except code B07 (AMG - ceramic brake system) Brake disk thickness	*BE42.10-P-1001-09EA
		Caliper gauge	Fig 1
		If the wear limit has been exceeded or will be exceeded before the next brakepad change. ↓ replace brake disk (1) in pairs.
		Remove/install brake disk (1) on rear axle Model 290 with code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) Model 290 with code U69 (Brake calipers painted yellow) except code B07 (AMG - ceramic brake system)	AR42.10-P-0240FRX
		Model 290 with code U70 (red-painted brake callipers) except code B07 (AMG - ceramic brake system)
		Remove/install brake disk (1) on front axle Model 290 with code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) Model 290 with code U69 (Brake calipers painted yellow) except code B07 (AMG - ceramic brake system) Model 290 with code U70 (red-painted brake callipers) except code B07 (AMG - ceramic brake system)	AR42.10-P-0230FRX
	Check
3	Check brake disk (1) on front and rear axle for corrosion, score marks, cracks and chippings.	Model 290 except code B07 (AMG - ceramic brake system)
		If the brake disk (1) is perforated or is provided with sunk holes, assess the crack length (x) including the bore diameter.
		Model 290.658/659/661/688/689 except code B07 (AMG - ceramic brake system) Check brake disks	*BE42.10-P-1002-08GA
		Model 290.658/659/661/688/689 except code B07 (AMG - ceramic brake system)	*BE42.10-P-1002-09EA
		Check brake disks If there is a problem, ↓ replace brake disks (1) in pairs.
		Remove/install brake disk (1) on rear axle Model 290 with code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) Model 290 with code U69 (Brake calipers painted yellow) except code B07 (AMG - ceramic brake system) Model 290 with code U70 (red-painted brake callipers) except code B07 (AMG - ceramic brake system)	AR42.10-P-0240FRX
		Remove/install brake disk (1) on front axle Model 290 with code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) Model 290 with code U69 (Brake calipers painted yellow) except code B07 (AMG - ceramic brake system) Model 290 with code U70 (red-painted brake callipers) except code B07 (AMG - ceramic brake system)	AR42.10-P-0230FRX
4	Check brake disk (1).	Model 290 with code B07 (AMG - ceramic brake system)
		If there is a problem, ↓ replace corresponding brake disk (1).	AR42.10-P-0270RG
		Remove/install brake disk (1) on rear axle Model 290 with code B07 (AMG - ceramic brake system)	AR42.10-P-0240FRK
		Remove/install brake disk (1) on front axle Model 290 with code B07 (AMG - ceramic brake system)	AR42.10-P-0230FRK
	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