Crankshaft

Crankshaft




The crankshaft has six main bearings, of which the 5th bearing is a thrust bearing. At the front end of the crankshaft there are two spline joints of which the inner drives the oil pump.

The outer joint carries the timing belt pulley and vibration damper. A dummy spline locates and guides the pulley.

The connecting rods are forged and the saw tooth joint between connecting rod and cap locates the cap exactly.

B 5254, B 5252 and B5234T are equipped with forged crankshafts which give maximum strength and also contribute to a low noise level.

On the B5252 a cast crankshaft will be introduced successively throughout 1993 due to the low power output.

The B 5204 has a shorter stroke which means that the crankshaft is more compact. The compact cast crankshaft still retains the strength of the crankshaft in engine B 5254.