Remove/install retaining lock for crankshaft/ring gear - AR03.30-P-5000SMG

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ENGINE 156 in MODEL 216, 221 with TRANSMISSION 722

Fig 1: Removing/Installing Crankshaft Retaining Lock/Ring Gear

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of lifting platform and position four support plates at lifting platform support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury caused by moving parts that can pinch, crush or, in extreme cases even sever extremities.	Keep all body parts and limbs away from moving mechanical components.	AS00.00-Z-0009-01A
1	Switch ignition off, remove ignition key (transmitter key).	On vehicles with code 889, Keyless Go: Press Keyless Go start/stop button repeatedly until ignition is switched off
	Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.		AS54.10-Z-0001-01A
2	Disconnect ground line from battery	Insulate clamping device of ground line in order to prevent inadvertent contact with ground point of battery.	AR54.10-P-0003SX
	Notes on battery	All models	AH54.10-P-0001-01A
3	Raise vehicle with lifting platform		AR00.60-P-1000SX
4	Remove starter		AR15.30-P-7100SMG
5	Insert retaining lock (1) into starter opening	Slide retaining lock into starter opening (see arrow) and allow to latch into ring gear. If required, continue turning engine at center bolt on the crankshaft in direction of rotation of the engine.
5	Insert retaining lock (1) into starter opening	Retaining lock	Fig 2
6	Install in the reverse order
7	Perform basic programming

Fig 2: Identifying Retaining Lock (112 589 03 40 00)

Courtesy of MERCEDES-BENZ USA