Check tires for damage and crack formations - AP40.10-P-4051SLR

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MODEL 199

Wear pattern

Fig 1: Identifying Outer/Center Wear Point

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

23.3.11	Raise vehicle until wheels are clear of the ground using lifting platform, added	Step 1
	Information on depth of tire tread measurement on main tread added	Step 5

	Checking
	Risk of death caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
1	Hoist vehicle with lifting platform until wheels are free		AR00.60-P-1000SLR
2	Check manufacture date of tires	If the manufacture date is older than 6 years, the tires have to be replaced.
3	Check tires on all wheel-and-tire assemblies	Check tread as well as outer and inner sidewalls on all tires for signs of damage such as cuts, punctures, cracks, breakouts, separation and ingressed foreign matter. If damage is present ↓
3	Check tires on all wheel-and-tire assemblies	Replace tires.	AR40.10-P-1030SLR
4	Check tire wear pattern on all wheel-and-tire assemblies	The wear pattern of the tread shows a wedge-shaped change (see arrow). This sign of wear only occurs under extreme driving conditions, e.g. when driving on a race circuit. A correction to the chassis adjustment due to this wear characteristic is not necessary. In the case of an unusual wear pattern, determine and eliminate the cause for the increased tire wear, then: ↓
4	Check tire wear pattern on all wheel-and-tire assemblies	Replace tires.	AR40.10-P-1030SLR
	Measure
5	Measure depth of tread of all tires and note measured values on the maintenance sheet	The main tread along the entire circumference must have a tread depth of at least 1.6 mm. Measure depth of tread at point of greatest wear. Perform measurement at outside, inside and center of main tread. The wide tread grooves in the center area of the tread, which accounts for roughly 3/4 of the tread width is deemed to be the main tread. Note outer and center wear points (1, 2). For safety reasons tires should be replaced before reaching the minimum tread depth: On summer tires at approx. 2 to 3 mm tread depth, Winter tires at approx. 4 mm tread depth.
	Notes on measuring tire tread depth		AH40.10-P-0006-01T
			Fig 2
6	Lower vehicle

Fig 2: Identifying Brake Pad Check Gauge (211 589 06 23 00)

Courtesy of MERCEDES-BENZ USA