Assess condition of brake disks

AP42.10-P-4256EW

10.05.2019

Model

117, 118, 156, 164, 166, 167, 169, 171, 172, 176, 177, 190, 197, 203, 204, 205, 207, 209, 211, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 238, 242, 245, 246, 247, 251, 253, 257, 290, 292, 293, 453, 461, 463

P42.10-2952-09

1	Steel brake disk		x	Crack length
2	Ceramic brake disk

Perforated compound brake disk with wear bores

11	Outer wear bore
12	Center wear bore
13	Inner wear bore
14	Brake disk bores

P42.10-3225-06

Compound brake disk with wear bores

11	Outer wear bore
12	Center wear bore
13	Inner wear bore

P42.10-3224-06

 Danger	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 handling, transport and storage of composite brake disks	Model 190, 205, 213, 217, 222, 238, 253, 257, 290	AH42.10-P-9406-12LF
Topical note	Notes on handling, transport and storage of ceramic brake disks	Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253, 290 with code B07 (Ceramic brake system)	AH42.10-P-9406-13A
	Check
1.1	Assess steel brake disks (1) for score marks, cracks, corrosion and soiling (e.g. oil, grease).	Model 117, 118, 156, 164, 166, 167, 169, 171, 172, 176, 177, 203, 204, 207, 209, 211, 216, 219, 221, 230, 238, 242, 245, 246, 247, 251, 257, 292, 293, 453, 461, 463 Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253, 290 except code B07 (Ceramic brake system) Model 205 with code B07 (Ceramic brake system)and steel brake disks on the rear axle
		 For perforated or counterbored steel brake disks (1) assess the crack length (x) including the bore diameter. Otherwise the assessment may be incorrect.
		If a crack length (x) is  25 mm (0.98 inches), split open cracks or score marks are deeper than 0.5 mm (0.02 inches), or severe corrosion is present,
		
		replace steel brake disks (1).
		 After obtaining special order.
		If soiling (e.g. oil, grease) is present.
		
		Clean steel brake disks (1), and replace if necessary.
		 After obtaining special order.
1.2	Assess ceramic brake disks (2) for damage and soiling (e.g. oil, grease).	Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253, 290 with code B07 (Ceramic brake system)
	Notes on evaluating brake disks		AH42.10-P-9406-07RQ
		If the ceramic brake disks (2) are damaged or soiled,
		
		replace ceramic brake disks (2).
		 After obtaining special order.
		If, in exceptional cases, assessment of the ceramic brake disks (2) is not possible by means of a visual check,
		
		check ceramic brake disks (2) for condition.
			AP42.10-P-4246U
		 After obtaining special order.
2.1	Assess steel brake disks (1) for wear.	Model 117, 118, 156, 164, 166, 167, 169, 171, 172, 176, 177, 203, 204, 207, 209, 211, 216, 219, 221, 230, 238, 242, 245, 246, 247, 251, 257, 292, 293, 453, 461, 463 Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253, 290 except code B07 (Ceramic brake system) Model 205 with code B07 (Ceramic brake system)and steel brake disks on the rear axle Steel brake disks (1) with wear bores.
Topical note	Notes on evaluating brake disks with and without wear holes		AH42.10-P-9406-14A
		If outer wear bore (11), center wear bore (12) and the inner wear bore (13) are visible,
		
		the steel brake disks (1) are OK; new brakepads can still be installed on the disks.
		If the inner wear bore (13) is visible,
		
		the steel brake disks (1) are OK, the current brakepads can still be used, do not install any more new brakepads onto the steel brake disks (1).
		If none of the three wear bores are visible,
		
		replace steel brake disks (1).
		 After obtaining special order.
		If, in exceptional cases, assessment of the steel brake disks (1) is not possible by means of a visual check,
		
		check steel brake disks (1) for condition.
			AP42.10-P-4246U
		 After obtaining special order.
2.2	Assess steel brake disks (1) for wear.	Model 117, 118, 156, 164, 166, 167, 169, 171, 172, 176, 177, 203, 204, 207, 209, 211, 216, 219, 221, 230, 238, 242, 245, 246, 247, 251, 257, 292, 293, 453, 461, 463 Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253, 290 except code B07 (Ceramic brake system) Model 205 with code B07 (Ceramic brake system)and steel brake disks on the rear axle Steel brake disks (1) without wear bores.
Topical note	Notes on evaluating brake disks with and without wear holes		AH42.10-P-9406-14A
		If deeply contoured ridging is present at the outer edge,
		
		replace steel brake disks (1).
		 After obtaining special order.
		If, in exceptional cases, assessment of the steel brake disks (1) is not possible by means of a visual check,
		
		check steel brake disks (1) for condition.
			AP42.10-P-4246U
		 After obtaining special order.

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