Workshop Manual

0312 1572 - 0138
2/4
© 11/2004
6
Drive system
W 02-10-03
2011
Only in BFL, BFM engines
z Measure piston ring trapezoidal groove for first
piston ring with trapezoidal groove wear gauge.
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z If there is a gap (S) between the trapezoidal wear
gauge and piston, the piston is still usable.
S
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z If the trapezoidal groove wear gauge is touching the
piston (arrow), the piston must be changed.
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