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

ENGINE 157, 278 in MODEL 166 

ENGINE 276 in MODEL 166, 251 

	Remove/install
	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
1	Remove corresponding underfloor paneling	MODEL 166	AR61.30-P-1001GQ
		MODEL 251	AR61.30-P-1001RT
2	Remove left catalytic converter	ENGINE 276.8 in MODEL 166, 251	AR49.10-P-5500GQC
3.1	Remove starter	ENGINE 276.9 in MODEL 166	AR15.30-P-7100GQ
3.2	Detach cover on access opening for retaining lock	ENGINE 157 in MODEL 166 with TRANSMISSION 722.9 ENGINE 276 in MODEL 251 with TRANSMISSION 722.9 ENGINE 276.8 in MODEL 166 with TRANSMISSION 722.9 ENGINE 278 in MODEL 166 with TRANSMISSION 722.9 Bolt, automatic transmission to engine	*BA27.40-P-1008-01A
	Check
4	Unfasten charge air cooler and place with attached lines to one side	ENGINE 276.8 in MODEL 166, 251	AR09.41-P-6819GQC
5	Check splines of ring gear for drive plate	Socket wrench bit Inspect gearing for wear and damage. To do this, crank engine at the central bolt of the crankshaft in the direction of rotation of the engine. If necessary: ↓ Replace drive plate	Fig 1
		ENGINE 276 in MODEL 166, 251	AR03.30-P-8001GQ
		ENGINE 157, 278 in MODEL 166	AR03.30-P-8001MLJ
	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 the mechanism when the components are moving.	AS00.00-Z-0009-01A
6	Insert retaining lock	Push retaining lock into starter opening and allow to engage in starter ring gear; turn engine at crankshaft if necessary.
		Retaining lock	Fig 2
7	Removal in the reverse order

HOUSING

Number	Designation			TRANSMISSION 722.9
*BA27.40-P-1008-01A	Bolt, automatic transmission to engine	M10X40	Nm	38
		M10X45	Nm	38
		M10X90	Nm	38
		M12	Nm	-

Fig 1: Identifying Socket Wrench Bit (001 589 65 09 00)

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA