• Steel body
• Valve directly activated
• Valve lash mechanically adjusted

Mechanical tappet with top shim

• Loosely inserted in tappet body
• Supplied in various thicknesses
• Material and heat treatment can be selected as required

Valve lash is adjusted by means of the shim thickness.

Mechanical tappet with bottom shim

• Defined lash between cam base circle and tappet body outside surface - due to shim thickness
• Very low tappet mass > reduced valve spring forces and thus frictional power
• Large contact surface for cam

Mechanical tappet with graded base thickness

Shim:

• Valve lash adjusted by means of the tappet base thickness
• Very low tappet mass
• Reduced valve spring forces and thus frictional power
• Large contact surface for cam
• Very economical manufacture feasible