Assess Condition Of Brake Linings - AP42.10-P-4252D

Model 253 

Courtesy of MERCEDES-BENZ USA

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
	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
Topical note	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on handling, transport and storage of composite brake discs		AH42.10-P-9406-12LF
	Check
1	Assess lining thickness (1) of brake linings on front axle	If necessary, use flashlight (2) or mirror (3). The thickness of the pad backing plate can be used as a guide when assessing brake lining thickness. Brake lining thickness If, in exceptional cases, assessment by means of visual inspection is not possible: ↓ Detach wheel and tire assemblies and inspect them, subject to separate repair order.	*BE42.10-P-1001-06B
2	Assess lining thickness (1) of brake linings on rear axle	If necessary, use flashlight (2) or mirror (3). The thickness of the pad backing plate can be used as a guide when assessing brake lining thickness. Brake lining thickness If, in exceptional cases, assessment by means of visual inspection is not possible: ↓ Detach wheel and tire assemblies and inspect them, subject to separate repair order.	*BE42.10-P-1001-18B
3	Determine likely remaining distance of brake linings	If the wear limit for the brake linings is reached, the brake linings must be replaced subject to a separate repair order. Otherwise the braking effect may be impaired and people, property and environmental damage may result! Per axle, the brake pad with the least lining thickness (1) is to be used for determining the likely remaining distance. In order to avoid an unscheduled workshop visit between services, it is necessary to determine the remaining distance of the present brake linings. If the remaining distance determined is smaller than the next service interval, premature brake pad replacement should be recommended to the customer.	AP42.10-P-4253-03EW

CHECK VALUES FOR FRONT AXLE BRAKE LINING

Number	Designation			Model 253
BE42.10-P-1001-06B	Brake lining thickness	Brake pad, new	mm	13
		Pad backing plate	mm	5
		Wear limit	mm	2
		Wear indicator activated (if installed)	mm	2-3

CHECK VALUES FOR REAR AXLE BRAKEPAD

Number	Designation			Model 253
BE42.10-P-1001-18B	Brake lining thickness	Brake pad, new	mm	11
		Pad backing plate	mm	5
		Wear limit	mm	2
		Wear indicator activated (if installed)	mm	2-3