3 Series E30 324td (M21) TOUR
11 25 Pistons with rings and pins M21 D 24 W, D 24 WA
1st groove (trapezoidal ring)
End clearance
mm
0.2 ... 0.4
2nd groove (taper face compression ring)
End clearance
mm
0.2 ... 0.4
Side clearance
mm
0.05 ... 0.08
3rd groove
(Oil scraper ring with hose-spring)
End clearance
mm
0.25 ... 0.50
Side clearance
mm
0.03 ... 0.06
TD Pistons with rings and pins, M21, D 24 W, D 24 WA
BMW AG - TIS
25.01.2013 01:30
Issue status (12/2007) Valid only until next DVD is issued
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