Car Automotive

Archive for September 12th, 2009

Crankshaft
The crankshaft is journaled in three main bearings (MD2010), or four main bearings (other engines). The axial bearing on MD2040 consists of loose thrust wash- ers placed at the rear main bearing. On the other en- gines the rear main bearing cap is made of aluminium and serves as thrust washers. The crankshaft is statically and dynamically balanced and has induction hardened bearing surfaces. At the front the crankshaft is fitted with a key joint and at the rear with a flange on which the fly- wheel is attached.

Main and big-end bearings
The main and big-end bearings consist of steel shells lined with bearing metal. The bearings are precision milled and ready for installation. Two oversizes are available as spare parts. Note: The thrust washers for the crankshaft’s axial bear- ing are not available in oversize.

Connecting rods
The connecting rods have I-sections. The piston bolt end is through-drilled for lubrication of the gudgeon pin.

Flywheel
The flywheel is screwed on a flange on the rear of the crankshaft. It is statically balanced and fully processed. The starter ring is shrunk onto the flywheel. A flexible coupling with damper element of rubber is screwed on the flywheel. The coupling transfers the force to the reverse gear/S-drive.