Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Tolerance When New Wear Limit
Max. wear limit of the cylinder bores in direction of driving or transverse direction at upper an lower point of return of the 1st piston ring 0.09 mm 0.09 mm
Axial clearance for piston rings in: Groove a 0.05 - 0.08 Millimeter (mm)0.10 Millimeter (mm)
Groove b 0.01 - 0.03 Millimeter (mm)0.10 Millimeter (mm)
Groove c 0.01 - 0.04 Millimeter (mm)0.06 Millimeter (mm)
Piston ring gap in: Groove a 0.20 - 0.35 Millimeter (mm)1.0 Millimeter (mm)
Groove b 0.20 - 0.35 Millimeter (mm)0.8 Millimeter (mm)
Groove c 0.20 - 0.35 Millimeter (mm)0.8 Millimeter (mm)
Piston clearance 0.008 - 0.018 mm 0.08 mm