
66
Repair Instructions
Checking for cracks
Cutting damage can cause overheating cracks which
can only be detected with special equipment. Any
cracks and notches can be found most reliably using
a magnetic powder such as Magnaglo, fluorescent
powder reacting to ultraviolet light. Refer to the rele-
vant equipment manufacturer’s instructions for opera-
tional procedure. The shaft must be demagnetized af-
ter this sort of test.
Cracks of the following type and locations mean that
the crankshaft must be discarded.
A.
Lengthwise cracks in the bearing journals and
hole edges.
B.
Lateral cracking in the marked area.
C.
Cracks longer than 5 mm connected to oilway
holes. Cracks shorter than 5 mm are removed
with grinding.
D.
Cracks longer than 10 mm outside the marked
area. Single cracks shorter than 10 mm can be
accepted.
Содержание 300 Series
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