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Question

Which one of the following is correct sequence

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A.


B.


C.


D.


Answer ( Option A)


Solution

Camshaft with pushrods

The overhead valve system (OHV) system, operated by pushrods, has the crankshaft adjacent and parallel to the crankshaft in the cylinder block.

As the crankshaft rotates, each valve is opened by means of a tappet, pushrod and rocker arm. The valve is closed by spring pressure.

The camshaft drive-chain sprocket has twice as many teeth as the crankshaft sprocket, so that the camshaft rotates at half engine speed.


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