Check brake lining thickness - AP42.10-P-4253MCU

MODEL 451.3/4 

Shown on left side of vehicle 

Fig 1: Identifying Plug And Brake Drum

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Checking
1	Remove stop plug (1) from brake anchor plate of left and right drum brake
2	Check lining thickness of brake shoes	The wear limit of brake shoe is to be evaluated through the inspection hole. Observe the wear limit to ensure that the wear limit is not exceeded before the next maintenance service. If necessary: ↓ Remove brake drum (2) for exact determination of the lining thickness of the brake shoes subject to separate repair order.
		Remove/install brake drum	AR42.10-P-1010MCU
		Remove/install brake shoes at rear axle	AR42.10-P-0165MCU
3	Seal inspection hole in brake anchor plate of left and right drum brake using stop plug (1)