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Checking connecting rod bolts - AR03.10-P-6111-01AW

INSPECTION DATA OF CONROD BOLTS

Number Designation Engine 601, 602 except 602.98, 603 except 603.970 up to 11/90 603.970 up to 8/90 Engine 601, 602 except 602.98, 603 except 603.970 as of 12/90 - 10/92 603.970 as of 9/90 - 10/92 Engine 601, 602 except 602.98, 603 as of 11/92
BE03.10-P-1001-03C Conrod bolt (straight stretch shank) Thread Ø   M - 9X1 9X1
Length (L) when new mm - 51.7 51.7
max. mm - 52.9 52.9
Stretch shank Ø New mm - 8.5 -
min. mm - 8.2 -
  See figure   - AR03.10-P-6111-01AW  AR03.10-P-6111-01AW 
BE03.10-P-1002-03C Conrod bolt (stretch bolt) Thread Ø   M 9X1 - -
Length (L) when new mm 51.7 - -
max. mm - - -
Stretch shank Ø New mm 7.3 - -
min. mm 7.1 - -
  See figure   AR03.10-P-6111-01AW  - -
  1. Inspect minimum stretch shank Ø (c) or length (L). If the measurement obtained is less than the minimum stretch shank Ø or greater than the maximum length, replace conrod bolt.

NOTES Only conrod bolts of the same type must be fitted to an engine because of the different weight.

Fig 1: Identifying Connecting Rod Bolts Length
G05438214Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Stretch shank bolt installed, engine 603.970 up to 08/1990, engine 601, 602, 603 except 603.970 up to 11/1990 

Straight stretch shank bolt installed 

as of 09/1990 in engine 603.970 up to 10/1992 

as of 12/1990 in engines 601, 602, 603 except 603.970 up to 10/1992 

Fig 2: Identifying Connecting Rod Bolts Length
G05438215Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Straight stretch shank bolt installed as of 11/1992 

Fig 3: Identifying Shank Length
G05438216Courtesy of MERCEDES-BENZ OF NORTH AMERICA.