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Install and gauge connecting rod bearings - AR03.10-P-6111-06TI

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ENGINE 642 

MODIFICATION NOTES

9.7.10 Value modified: Bolt connecting conrod cap to conrod, See picture in   *BA03.10-P-1001-01L 
TEST VALUE 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
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
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
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 (Rz) inside conrod bush μM 5
BE03.10-P-1011-01G Conrod bolt Thread dia. M 8.5 X 1
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
∠° 90
6. Long arm stage ∠° 90
7. Short arm stage ∠° 90
8. Long arm stage ∠° 90
See picture in AR03.10-P-6111-06TI 
  1. Clean the bearing points of conrod, conrod bearing caps and conrod bearing journals with a chamois leather.

    MAXIMUM AIR VOLUME Never use hard objects for cleaning to prevent damage.

    IMPORTANT Blow through oil galleries in direction of flow oil with compressed air.

  2. Install the conrod bearing cap with conrod bearing shells.
  3. Lubricate thread and bolt head contact surface of conrod bolts with engine oil.
  4. Screw in the connecting rod bolts and tighten according to the tightening instructions TORQUE SPECIFICATION .

    NOTES The conrods are cracked (broken). The dimensional accuracy of the conrods can no longer be guaranteed, therefore new conrods must be fitted following removal. Otherwise engine damage can occur. The conrods are supplied with assembly screws, which must be replaced by conrods with assembly clamps to prevent loosening.

    Fig 1: Connecting Rods Assembly Screws
    G10240578Courtesy of MERCEDES-BENZ USA