Assess condition of brake linings - AP42.10-P-4252SLB

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MODEL 172

Fig 1: Checking Brake Lining Thickness

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Lining Thickness, Flashlight & Mirror

Courtesy of MERCEDES-BENZ USA

	Check
	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
	Notes on repairs to brake system		AH42.00-P-0003-01A
1	Assess lining thickness (1) of brake pads on front axle	If necessary, use lamp (2) or mirror (3). The thickness of the pad backing plate can be used as a guide when assessing brake lining thickness.
1	Assess lining thickness (1) of brake pads on front axle	Brake shoe thickness If, in exceptional cases, assessment by means of visual inspection is not possible, ↓ remove wheels to conduct assessment, subject to separate repair order.	*BE42.10-P-1001-05P
2	Assess lining thickness (1) of brake pads on rear axle	If necessary, use lamp (2) or mirror (3). The thickness of the pad backing plate can be used as a guide when assessing brake lining thickness.
2	Assess lining thickness (1) of brake pads on rear axle	Brake shoe thickness If, in exceptional cases, assessment by means of visual inspection is not possible, ↓ remove wheels to conduct assessment, subject to separate repair order.	*BE42.10-P-1001-15P
3	Determine likely remaining distance of brake linings		AP42.10-P-4253-03EW
3	Determine likely remaining distance of brake linings	If the wear limit for the brake linings is reached, the brake pads must be replaced subject to 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 is to be used for determining 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 BRAKE LINING

Number	Designation			MODEL 172.403/404/434/438/457, MODEL 172.431 with CODE 950/951/952, MODEL 172.447 except CODE 494	MODEL 172.475
BE42.10-P-1001-05P	Brake pad	Brake pad, new	mm	12, 50	11, 30
		Pad backing plate	mm	5, 50	5, 50
		Wear limit	mm	2, 00	2, 00
		Wear indicator activated (if installed)	mm	2...3	2...3

CHECK VALUES FOR FRONT BRAKE LINING

Number	Designation			MODEL 172.431 except CODE 950/951/952, MODEL 172.447 with CODE 494, MODEL 172.448
BE42.10-P-1001-05P	Brake pad	Brake pad, new	mm	14, 00
		Pad backing plate	mm	5, 50
		Wear limit	mm	2, 00
		Wear indicator activated (if installed)	mm	2...3

CHECK VALUES FOR REAR BRAKE PAD

Number	Designation			MODEL 172.403/404/431/434/438/447/448/457/475
BE42.10-P-1001-15P	Brake pad	Brake pad, new	mm	12, 0
		Pad backing plate	mm	5, 5
		Wear limit	mm	2, 0
		Brake wear indicator activated (if installed)	mm	2...3