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Crank pulley; Crankshaft. Crankshaft oil seal (or rear main seal) Cylinder head. Cylinder head cover; Other cylinder head cover parts; Cylinder head gasket; Distributor; Distributor cap; Drive belt; Engine block; Engine cradle; Engine shake damper and vibration absorber; Engine valve; Fan belt; Gudgeon pin ; Harmonic balancer; Heater; Mounting ...
A main bearing is a bearing in a piston engine which holds the crankshaft in place and allows it to rotate within the engine block. The number of main bearings per engine varies between engines, often in accordance with the forces produced by the operation of the engine.
Crankshaft, pistons and connecting rods for a typical internal combustion engine Marine engine crankshafts from 1942. The crankshaft is located within the engine block and held in place via main bearings which allow the crankshaft to rotate within the block. [3] The up-down motion of each piston is transferred to the crankshaft via connecting ...
It was fitted to Nissan 720 pickup trucks 1983 through 1986 and D21 Nissan pickups (only 1986–1988). In some European markets it was also fitted to the Nissan Urvan and Cabstar. Featured five main bearing crankshaft and redesigned rear main seal.
The crankcase often forms the upper half of the main bearing journals (with the bearing caps forming the other half), although in some engines the crankcase completely surrounds the main bearing journals. An open-crank engine has no crankcase. This design was used in early engines and remains in use in some large marine diesel engines.
In 1974, the oil dipstick tube moved from the timing case to the skirt under the left cylinder bank near the rear of the casting. In 1984, the rear main seal was changed from a two-piece to a single-piece design. Around 8.6 million 351W engines were manufactured between 1969 and 1996 at the Windsor Engine Plant Number One. Applications: