Remove/install lower crankcase section at removed engine - AR01.40-P-3200AMG

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ENGINE 156

Fig 1: Lower Crankcase Section Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Lower Crankcase Section Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Secure engine to assembly stand Passenger car engine assembly stand
2	Remove spark plugs
		ENGINE 156 in MODEL 204, 212	AP15.10-P-1580CMG
		ENGINE 156 in MODEL 230	AP15.10-P-1580RMG
		ENGINE 156 in MODEL 164, 251	AP15.10-P-1580RTS
		ENGINE 156.984 in MODEL 216.377, 221.077/177	AP15.10-P-1580SMG
		ENGINE 156.982 in MODEL 209 ENGINE 156.983 in MODEL 211, 219	AP15.10-P-1580TMG
3	Remove oil pan bottom section	ENGINE 156 in MODEL 164, 251	AR01.45-P-7555GZS
		ENGINE 156 in MODEL 204, 212	AR01.45-P-7555CMG
		ENGINE 156.982 in MODEL 209.377/477	AR01.45-P-7555TMG
		ENGINE 156.983 in MODEL 211.077/277, 219.377
		ENGINE 156 in MODEL 216, 221	AR01.45-P-7555SMG
		ENGINE 156 in MODEL 230.470	AR01.45-P-7555RMG
4	Remove oil pan	ENGINE 156 in MODEL 164, 251	AR01.45-P-7500GZS
		ENGINE 156 in MODEL 204, 212	AR01.45-P-7500CMG
		ENGINE 156.982 in MODEL 209.377/477	AR01.45-P-7500QMG
		ENGINE 156.983 in MODEL 211.077/277, 219.377	AR01.45-P-7500TMG
		ENGINE 156 in MODEL 216, 221	AR01.45-P-7500SMG
		ENGINE 156 in MODEL 230.470	AR01.45-P-7500RMG
5	Remove oil pump	ENGINE 156 in MODEL 164, 251	AR18.10-P-6020GZS
		ENGINE 156 in MODEL 204, 212	AR18.10-P-6020CMG
		ENGINE 156.982 in MODEL 209.377/477	AR18.10-P-6020TMG
		ENGINE 156.983 in MODEL 211.077/277, 219.377
		ENGINE 156 in MODEL 216, 221	AR18.10-P-6020SMG
		ENGINE 156 in MODEL 230.470	AR18.10-P-6020RMG
6	Detach A/C compressor or A/C compressor from crankcase	ENGINE 156 in MODEL 212	AR83.55-P-5300EW
		ENGINE 156.980 in MODEL 164 with CODE 580 (Automatic air conditioning) with CODE 581 (Comfort automatic air conditioning)	AR83.55-P-5300GZ
		ENGINE 156 in MODEL 204	AR83.55-P-5300CMG
		ENGINE 156.982 in MODEL 209.377/477 with CODE 580 (Automatic air conditioning) with CODE 581 (Comfort automatic air conditioning) ENGINE 156.983 in MODEL 211.077/277, 219.377 with CODE 580 (Automatic air conditioning) with CODE 581 (Comfort automatic air conditioning)	AR83.55-P-5300TMG
		ENGINE 156 in MODEL 216, 221	AR83.55-P-5300SMG
		ENGINE 156 in MODEL 230.470	AR83.55-P-5300RMG
		ENGINE 156.980 in MODEL 251	AR83.55-P-5300RT
7	Detach engine support from crankcase	ENGINE 156	*BA22.10-P-1001-02A
8	Remove vacuum reservoir	For vehicles with vacuum reservoir at the crankcase
9	Remove rear radial shaft sealing ring	ENGINE 156 in MODEL 164, 251	AR03.20-P-3063GZS
		ENGINE 156 in MODEL 204, 212	AR03.20-P-3063CMG
		ENGINE 156.982 in MODEL 209.377/477	AR03.20-P-3063TMG
		ENGINE 156.983 in MODEL 211.077/277, 219.377
		ENGINE 156 in MODEL 216, 221	AR03.20-P-3063SMG
		ENGINE 156 in MODEL 230.470	AR03.20-P-3063RMG
		Replace rear radial shaft sealing ring.
10	Unfasten screw/bolts (13, 14, 15) counter to the tightening procedure and remove		AR03.20-P-4351-05AMG
		Replace screw/bolts (13, 14, 15) and tighten according to tightening procedure.
		Bolt for crankshaft bearing cap (lower section of cylinder crankcase/main bearing threaded connection)	*BA03.20-P-1001-01J
		Cylinder crankcase lower part to cylinder crankcase upper part	*BA03.20-P-1002-01J
11	Pry off lower crankcase section (8) (bed plate) and take off
	Notes on sealant path for timing case cover		AH01.40-P-1000-01AMG
	Information on application of sealant to crankcase bottom section		AH01.40-P-1000-03AMG
		Do not hammer in any pry off tool between upper crankcase section (7) and lower crankcase section (8) (bed plate). The sealing surfaces can be damaged otherwise. Sealing surfaces must be absolutely oil and grease free before application of the sealant. Leaks can occur otherwise. Apply sealant to upper crankcase section (7) and timing case cover.
		Loctite 5970 sealant	*BR00.45-Z-1013-01A
		Application gun	Figure
12	Remove sealant on timing case cover, upper crankcase section (7) and lower crankcase section (8) (bed plate)		AR01.00-P-0050-01A
		Do not use any sharp-edged tools or abrasive paper. The sealing surfaces can be damaged otherwise.
		Loctite 7200	*BR00.45-Z-1038-04A
		Loctite 7063 cleaning spray (150 ml)	*BR00.45-Z-1046-04A
13	Install in the reverse order

CRANKSHAFT BEARING CAP

Number	Designation				ENGINE 156
BA03.20-P-1001-01J	Bolt for crankshaft bearing cap (lower section of cylinder crankcase/main bearing threaded connection)	M9	Stage 1	Nm	20
			Stage 2	Nm	32
			Stage 3	∠°	90
			Stage 4	∠°	90
			Stage 5		losen
			Stage 6	Nm	20
			Stage 7	Nm	32
			Stage 8	∠°	90
			Stage 9	∠°	90
		M10	Stage 1	Nm	20
			Stage 2	Nm	40
			Stage 3	∠°	90
			Stage 4	∠°	90
			Stage 5		losen
			Stage 6	Nm	20
			Stage 7	Nm	40
			Stage 8	∠°	90
			Stage 9	∠°	90

CRANKSHAFT BEARING CAP

Number	Designation				ENGINE 156
BA03.20-P-1002-01J	Cylinder crankcase lower part to cylinder crankcase upper part	M6	Stage 1	Nm	4
		M6	Stage 2	∠°	90
		M8	Stage 1	Nm	10
		M8	Stage 2	∠°	90

ENGINE SUPPORT (ENGINE SIDE)

Number	Designation			ENGINE 156
BA22.10-P-1001-02A	Bolt, engine support to crankcase	Stage 1	Nm	20
BA22.10-P-1001-02A	Bolt, engine support to crankcase	Stage 2	∠°	90

Fig 3: Identifying Application Gun (112 589 00 25 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1013-01A	Loctite 5970 sealant	A 003 989 98 20
BR00.45-Z-1038-04A	Loctite 7200	Henkel Loctite Deutschland GmbH
BR00.45-Z-1046-04A	Loctite 7063 cleaning spray (150 ml)	A 001 986 71 71 10