Install, measure conrod bearings - AR03.10-P-6111-06TI

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Fig 1: Identifying Conrod Bolts Tightening Instructions

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Clean bearing points of conrod, conrod bearing caps and of conrod bearing journals with a chamois leather.
Blow through oil galleries in direction of flow oil with compressed air. Do not use any hard objects for cleaning.
Install conrod bearing cap with conrod bearing shells.
Coat the conrod bolt threads and the contact surfaces of the conrod bolt heads with engine oil.
Screw in conrod bolts and tighten according to tightening instructions .
The conrods are cracked (broken). New conrods must be fitted following removal as the dimensional accuracy of the conrods after opening can not be guaranteed. The conrods are supplied with the assembly bolts and must be replaced with conrods with the assembly locking element.

MODIFICATION NOTES

9.7.10

Value modified: Bolt connecting conrod cap to conrod, See picture in

*BA03.10-P-1001-01L

TEST VALUES FOR CONNECTING ROD

Number	Designation				Engine 642
BE03.10-P-1001-01G	Dimension	Distance from center of conrod bearing bore to conrod bush bore (L)		mm	167.97...168.03
		Width of conrod	Conrod bearing bore (B)	mm	18.1...18.6
		Width of conrod	Conrod bush bore (b)	mm	21.94...22.0
		See picture in			-
BE03.10-P-1002-01G	Dimension	Conrod bearing shell basic bore (D1) dia. Ø		mm	67.600...67.614
		Permissible out-of-roundness and conicity of basic bore		mm	0, 007
		See picture in			-
BE03.10-P-1003-01G	Dimension	Permissible twist of conrod bearing bore to conrod bush bore over a length of 100 mm		mm	0.100
BE03.10-P-1004-01G	Dimension	Permissible variation of axial parallelism of conrod bearing bore to conrod bush bore over a length of 100 mm		mm	0.045
BE03.10-P-1005-01G	Dimension	Permissible weight difference between complete conrods in the same engine		g	2
BE03.10-P-1006-01G	Dimension	Conrod bush inner dia. Ø(d)		mm	30.038...30.044
BE03.10-P-1006-01G	Dimension	See picture in			-
BE03.10-P-1007-01G	Dimension	Conrod bush outside dia.		mm	-
BE03.10-P-1008-01G	Dimension	Conrod bush basic bore dia. Ø(d1)		mm	32.500...32.525
BE03.10-P-1008-01G	Dimension	See picture in			-
BE03.10-P-1009-01G	Dimension	Piston pin play in conrod bush		mm	0.028...0.039
BE03.10-P-1010-01G	Dimension	Peak-to-valley height (R_z ) inside conrod bush		μM	5
BE03.10-P-1011-01G	Conrod bolt	Thread dia.		M	8.5x1
BE03.10-P-1011-01G	Conrod bolt	Shank length when new		mm	47 (±0.3)

CONNECTING ROD

Number	Designation			Engine 642
BA03.10-P-1001-01L	Bolt connecting conrod cap to conrod	1. Short arm stage	Nm	15
		2. Long arm stage	Nm	20
		3. Short arm stage	Nm	30
		4. Long arm stage	Nm	40
		5. Short arm stage	Nm	40
		5. Short arm stage	∠°	90
		6. Long arm stage	∠°	90
		7. Short arm stage	∠°	90
		8. Long arm stage	∠°	90
		See picture		Fig 1