Modification notes
Check values for connecting rod
Number | Designation | Engine | Engine | ||
BE03.10-N-1001-01P | Bolt, connecting rod bearing cap to connecting rod | Thread Ø | M | 161.5 | 161.5 |
Length of shank when new | mm | 67.2...67.5 | 67.2...67.5 | ||
Permissible shank length | mm | 68,5 | 68,5 | ||
BE03.10-N-1002-01P | Connecting rod bearing radial play | mm | 0.060 to 0.120 | 0.060 to 0.120 | |
Check values for a crankshaft
Number | Designation | Engine | Engine | ||
BE03.20-N-1001-02M | Connecting rod journal Ø, connecting rod journal width | Ø standard | mm | 89.980 to 90.000 | 93.980 - 94.000 |
Ø deviation 0.10 | mm | 89.880 - 89.900 | 93.880 - 93.900 | ||
Ø deviation 0.25, | mm | 89.730 - 89.750 | 93.730 - 93.750 | ||
Ø deviation 0.50 | mm | 89.480 - 89.500 | 93.480 - 93.500 | ||
Ø deviation 0.75 | mm | 89.230 - 89.250 | 93.230 - 93.250 | ||
Ø deviation 1.00 | mm | 88.980 - 89.000 | 92.980 - 93.000 | ||
BE03.20-N-1002-02M | Connecting rod bearing inside Ø with connecting rod bearing shells inserted | Standard | mm | 90.060 to 90.102 | 94.064 to 94.110 |
Deviation 0.10 | mm | 89.960 to 90.002 | 93.964 to 94.010 | ||
Deviation 0.25 | mm | 89.810 to 89.852 | 93.814 to 93.860 | ||
Deviation 0.50 | mm | 89.560 to 89.602 | 93.564 to 93.610 | ||
Deviation 0.75 | mm | 89.310 to 89.352 | 93.314 to 93.360 | ||
Deviation 1.00 | mm | 89.060 to 89.102 | 93.064 to 93.110 | ||
Connecting rod
Number | Designation | Engine | ||
BA03.10-N-1001-01L | Bolt, connecting rod bearing cap to connecting rod | Stage 1 | Nm | 110 |
Stage 2 | ° | 90 | ||
422 589 02 09 00
Wrench socket
Dial indicator
001 589 53 21 00
W03.20-1075-11
1 Clean connecting rod journals on crankshaft (1) with a chamois leather.
2 Measure connecting rod journal Ø of crankshaft (1) using the micrometer in three measuring directions (D, E, F) offset by about 60°. Calculate a mean value using the three measured values.
The crankshaft (1) must be machined or installed if one measurement of connecting rod journal Ø is outside the tolerance.
3 Assign connecting rod bearing shells according to the mean value of the connecting rod journal Ø.
Observe machining stage (standard or deviation and corresponding width). All connecting rod journal Ø must have the same machining stage; machine or replace the crankshaft (1) as required.
4 Clean connecting rod bearing shells (3, 4), and their mounts in the connecting rod (2) and connecting rod bearing cap (6) with a chamois leather and check for wear and damage.
In cases of wear, connecting rod bearing shells (3, 4) can be replaced if all connecting rod journal Ø on the crankshaft are within the tolerance.
5 Assign marked connecting rod bearing shell (3, 4) on connecting rod (2) and connecting rod bearing cap (6) and insert.
The locking lugs on connecting rod bearing shells (3, 4) must be located in foreseen grooves (arrows) in connecting rod (2) and connecting rod bearing cap (6). The connecting rod bearing cap (6) and the connecting rod (2) are marked by numbers (e.g. X431) for pairing and must not get mixed up with each other. They must be assigned according to marked installation position of connecting rod journal on crankshaft.
6 Measure connecting rod bolts (5).
Replace corresponding connecting rod bolt (5) if the shank length is exceeded.
W03.10-1035-03
7 Tighten connecting rod bearing cap (6) with connecting rod bolt (5) on connecting rod (2) .
The connecting rod (2) and connecting rod bearing cap (6) must only be tightened using engaged connecting rod bearing shells (3, 4). Observe tightening torque stage.
8 Set dial indicator and quick connect calipers for inside measurements, set using the outside micrometer to the smallest dimension of the respective machining stage (observe preload of 5 mm) and set scale on dial indicator to "0".
9 Measure connecting rod bearing inside Ø in assembled connecting rod (2) using quick calipers for inside measurements in the measurement directions (A, B, C). Begin with measuring direction (A) 90° offset from separation point (arrows) and measure each remaining measuring direction (B, C) offset by about 60°. Take the mean value of the three connecting rod bearing inside Ø.
The preset dimension plus a read off measured value each produce a measured connecting rod bearing Ø. If one of the three connecting rod bearing inside Ø is outside the tolerance, repeat the measurement again with new connecting rod bearing shells, or replace connecting rod (2) with connecting rod bearing cap (6).
W03.10-1034-03
10 Take the calculated mean value of the connecting rod journal Ø from the calculated mean value of the connecting rod bearing inside Ø.
Example: 90.060 mm - 89.990 mm = 0.070 mm
11 Take off connecting rod bearing cap (6) again.
The connecting rod bearing inside Ø and connecting rod journal must have the same machining stage (standard or deviation) in order to achieve the correct connecting rod bearing play. No reworking is permissible. The bearing shells are delivered ready-to-install ex works and for repair purposes, also in Deviations.