Remove/Install Retaining Lock For Crankshaft - AR03.30-P-5001XGA

Engine 176 in model 463

as of model year 2019

Shown on the left side of the engine

Courtesy of MERCEDES-BENZ USA

	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
	Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	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 injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Remove
1	Remove lower engine compartment paneling.		AR61.20-P-1105XG
2	Remove mounting console for low- temperature circuit switchover valve.	No coolant hoses are disconnected.	AR09.41-P-1220-01XGA
3	Unscrew nuts of the screws (2) and remove screws (2).
4	Remove cover (1) of the access opening.
5	Turn engine at the center bolt of the crankshaft in the direction of engine rotation and check ring gear of the drive plate for damage.	Ring wrench	Fig 1
		Socket wrench bit If complaints are present, ↓ Replace drive plate.	Fig 3
			AR03.30-P-8003XGA
6	Insert retaining lock into access opening.	If necessary, continue turning the engine at the center bolt of the crankshaft in direction of engine rotation until the retaining lock engages. Ring wrench	Fig 1
		Socket wrench bit	Fig 3
		Retaining lock	Fig 2
	Install
7	Remove retaining lock from access opening.	Retaining lock	Fig 2
8	Attach cover (1) and insert screws (2).
9	Position nuts of screws (2).
10	Tighten screws (2).	Engine 176 in model 463 with transmission 725.0 as of model year 2019Screw/bolt, transmission to engine	*BA27.10-P-1001-04H
11	Attach low-temperature circuit switchover valve mounting support.		AR09.41-P-1220-01XGA
		Bolt, mounting rail in lower engine compartment lining (front) to frame	*BA61.20-P-1002-01A
12	Install lower engine compartment lining.		AR61.20-P-1105XG