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Crankshaft assembly
General
The crankshaft is made of ductile cast iron. It has
integral balancing weights and five main bearing
journals.
The axial play is controlled by two sectioned thrust
washers on each side of the central main bearing.
The main bearings have a steel plate mantel and a
surface bearing of tin-aluminum. The main bearing
cap is made of ductile cast iron.
The front and rear stuffing boxes have lip seals
made of Viton and oil return grooves on the inside of
the lip. The front stuffing box is installed on the front
side of the lubricating oil pump. On most engines
the rear stuffing box is located directly in the fly-
wheel cover or the back plate.
The crankshaft front end has two separate key-
grooves. The rear keygroove is for the lubricating
oil pump, which is installed around the crankhaft.
The front keygroove is for the belt pulley, which
drives the timing belt.
The crankshaft pulley is fastened to the belt pulley
with four domed screws and fastened to the crank-
shaft with a center screw.
A vibration damper is integrated into the pulley.
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