Removing and installing crankshaft - RA03001041800X(03-1800)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Preceding work:
Engine removed (01-0300) .
Oil pump removed (18-2100) .
Oil shield at crankshaft removed (18-2180) .
End cover removed (01-2220) .
Timing case cover removed (01-2100) .
Operation no. of operation texts and work units or standard texts and flat rates:
03-4351
| Conrod bearing cap | unbolt, remove. |
| Crankshaft bearing cap | unbolt, remove.
NOTE:
The crankshaft bearing caps are consecutively numbered, beginning with the first crankshaft bearing cap at the front.
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| Crankshaft (20) | remove, install.
NOTE:
Crankshaft bearing shells (24) in the crankcase have an oil groove and an oil feed drilling.
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| Crankshaft bearing cap | install, pay attention to fit, see note. |
| Axial bearings (22) and (23) | install in crankshaft bearing point (5).
NOTE:
The thrust washers in the bearing cap each have two retaining lugs as an anti-twist lock. The oil grooves (arrows) in the thrust washers (22) and (23) must face toward the crankshaft thrust sides.
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| Bolt thread and bolt head contact surface | oil. |
| Bolts of crankshaft bearing caps | tighten from inside to outside. Initial torque 55 Nm. Tightening angle 90 - 100°. Re-use bolts up to a bolt length of max. 63.8 mm. |
| Conrod bearing cap | lubricate with engine oil and install bearing cap. Pay attention to marking. Install the bearing shells with the oil drilling in the conrod otherwise the conrod bushes will not be lubricated. |
| Conrod bolts | tighten (03-3100) . |
| Crankshaft (20) | rotate, check clearance. |
TIGHTENING TORQUES IN NM OR ANGLE OF ROTATION
| Bolts (1) of crankshaft bearing cap | initial torque | 55 | ||
| angle of rotation | 90° | |||
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Special tools
NOTE:
The 7 crankshaft bearing caps are fitted at the side in the crankcase (arrows). The fit is off centered so that the bearing caps can only be installed in one position.
The crankshaft bearing caps are machined together with the crankcase.
Following bearing damage, the conrods must be taken out and any swarf present in the conrod bores, the crankshafts and crankcase oil galleries removed.
Replace oil filter, oil cooler and oil pump.
The forged conrods are guided axially in the pistons (piston-guided conrods) (arrows).