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Limit sample photo

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The irregularities shown in the limit sample photo are normal and must not be classified as damage influencing the function of the part or requiring replacement of the part.

Fig 1: Checking Valve Tappet Guide
G03099994Courtesy of PORSCHE OF NORTH AMERICA, INC.

Permissible irregularities: 

A =Voids up to max. 1 mm[sup2 ]

B =Fractures at the edges of the running surface of the valve tappet guide

C =Irregular contact patterns in the running surfaces of the valve tappet guide

D =Grooves in the oil pockets