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B5.9G, B5.9LPG – Troubleshooting and Repair Manual – 004-999   Cam Followers/Tappets – Overview

Table of Contents

General Information

General Information

 TOC

Valve Tappets and Push Tubes

The valve tappets are mushroom-shaped. The convex shape of the surface that contacts the camshaft lobe causes the tappets to rotate as it lifts the push tube.

  
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The ball end of the push tube fits into a ball socket in the tappet. The other end of the push tube is fitted with a socket into which the ball end of the rocker lever adjusting screw operates.

  
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A loose rocker lever and the need to reset the valve clearance frequently can indicate camshaft lobe or valve tappet wear. If an inspection of the levers, valve stems, and push tubes does not show wear, then valve tappet and/or camshaft lobe wear can be suspected.

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Last Modified:  03-Apr-2002
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