Remove/install crankshaft - AR03.20-P-4351SXI

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ENGINE 642 in MODEL 207, 212, 218, 221

Fig 1: Crankshaft Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Secure vehicle on vehicle lift	MODEL 207	AR00.60-P-0100CW
		MODEL 212, 218	AR00.60-P-0100EWS
		MODEL 221	AR00.60-P-0100SX
2.1	Remove engine	MODEL 207 with ENGINE 642 MODEL 212, 218 with ENGINE 642 without CODE M005 (4MATIC) MODEL 221.02/12 with ENGINE 642 MODEL 221.08/18 with ENGINE 642
		Model 207, model 212, 218 except code M005 (4MATIC)	AR01.10-P-2400OGE
		MODEL 221.02/12	AR01.10-P-2400SXI
		MODEL 221.08/18	AR01.10-P-2400SYZ
2.2	Remove engine with front axle carrier	MODEL 212, 218 with code M005 (4MATIC)
			AR01.10-P-2500OGE
3.1	Remove transmission with torque converter	Model 207, 212, 218, 221 with transmission 722.9
		Model 207 with transmission 722.9	AR27.10-P-0500CV
		Model 212, 218 with transmission 722.9 except code M005 (4MATIC)	AR27.10-P-0500EV
		Model 212, 218 with transmission 722.96 with code M005 (4MATIC)	AR27.10-P-0500CWX
		Model 221.0/1 with transmission 722.9 except code M005 (4MATIC)	AR27.10-P-0500SX
		Model 221 with transmission 722.9. with code M005 (4MATIC)	AR27.10-P-0500SYZ
3.2	Remove manual transmission	Model 212 with transmission 711.6
			-
4	Remove belt pulley		AR03.30-P-1600SXI
5	Remove drive plate		AR03.30-P-8001SXI
6	Remove cylinder head	MODEL 207, 212, 218	AR01.30-P-5800OGE
		MODEL 221	AR01.30-P-5800SXI
7	Remove oil pan	Model 207, model 212 (except 212.08/09/28/29), model 218 (except 218.39)	AR01.45-P-7500CO
		MODEL 212.08/09/28/29, 218.39	AR01.45-P-7500CWY
		MODEL 221.02/12	AR01.45-P-7500SXI
		MODEL 221.08/18	AR01.45-P-7500SYZ
8	Remove oil pump		AR18.10-P-6020SXI
9	Remove chain tensioner		AR05.10-P-7800SXI
10	Remove camshaft sprocket		AR05.20-P-6040OM
11	Remove timing case cover		AR01.40-P-8000SXI
12	Remove connecting rod bolts (12)	Bolt, connecting rod bearing cap to connecting rod	*BA03.10-P-1001-01L
13	Remove connecting rod		AR03.10-P-6111-06SXI
		The connecting rods (11) are cracked (broken) (magnified section). Dimensional accuracy of connecting rods (11) can no longer be guaranteed after opening, therefore new connecting rods must be fitted after removal. Engine damage may result. The connecting rods are delivered with assembly bolts and have to be replaced by connecting rod bolts (12) with an assembly locking element. This avoids loosening. The anti-twist locks (14) of the connecting rod bearing shells (13) must be located in the grooves (15) in the connecting rod (11) and the connecting rod bearing cap (16).
14	Remove pistons		AR03.10-P-7021SXI
15	Remove crankshaft bearing caps (4, 10) and fitted bearing (5)		AR03.20-P-4351-02TI
		The crankshaft bearing bolts (M11) (8) and the side crankshaft bearing bolts (M10) (9) must be replaced. Otherwise there is risk of breakage. Follow loosening procedure. Tighten the crankshaft bearing bolts (M11) (8) and the side crankshaft bearing bolts (M10) (9) evenly according to the tightening procedure.
		Screw/bolt, crankshaft bearing cap to crankshaft bearing body	*BA03.20-P-1001-01E
		Side screw/bolt, crankshaft housing to crankshaft bearing cap	*BA03.20-P-1002-01E
16	Remove crankshaft bearing caps (4, 10) and fitted bearing (5)	Carefully pry out crankshaft bearing cap (4, 10) and fitted bearing (5). Before removing mark the crankshaft bearing caps (4, 10) and fitted bearing (5).
17	Take crankshaft (1) out of cylinder crankcase
18	Take crankshaft bearing shells with oil holes and oil grooves (2) out of cylinder crankcase	Lubricate crankshaft journals and crankshaft bearing shells with oil holes and oil grooves (2).
19	Remove thrust plates (6) from cylinder crankcase	Observe installation position.
20	Install in the reverse order

CONNECTING ROD

Number	Designation			ENGINE 642
BA03.10-P-1001-01L	Bolt, connecting rod bearing cap to connecting rod	Stage 1 short arm	Nm	15
		Stage 2 long arm	Nm	20
		Stage 3 short arm	Nm	30
		Stage 4 long arm	Nm	40
		Stage 5 short arm	Nm	40
		Stage 5 short arm	∠°	90
		Stage 6 long arm	∠°	90
		Stage 7 short arm	∠°	90
		Stage 8 long arm	∠°	90
		For picture, see		AR03.10-P-6111-06TI

CRANKSHAFT BEARING CAP

Number	Designation				ENGINE 642
BA03.20-P-1001-01E	Screw/bolt, crankshaft bearing cap to crankshaft bearing body	M10	Stage 1	Nm	5
			Stage 2	Nm	35
			Stage 3	∠°	95
			Stage 4	∠°	95

CRANKSHAFT BEARING CAP

Number	Designation				ENGINE 642
BA03.20-P-1002-01E	Side screw/bolt, crankshaft housing to crankshaft bearing cap	M10	Stage 1	Nm	53
BA03.20-P-1002-01E		M10	Stage 2	∠°	95