CYLINDER HEAD - CONTINUED
Welded valves which have two types of metal, may be magnetic tested. However, due to
change of metal at weld, there will be magnetic leakage at this point. This will be indi-
cated by a broad fuzzy pattern of magnetic particles.
f . Using magnetic inspection method, in-
spect for magnetic indications.
If indications appear over 1/2 inch
(12.70 mm) in length or more than
five indications are spaced closer
than 1/8 inch (3.18 mm) In area (7),
If magnetic indications appear in areas
(8), (9), (10), or (11), discard valve.
T A 2 4 2 4 6 2