BMW R 1150 RT Repair Manual page 82

Technical Data 11 Engine
3rd groove
Coiled-spring ring
Height
Wear limit
Gap
Wear limit
Float
Wear limit
Piston pin
Piston pin dia.
Wear limit
Bore dia. in piston
Radial clearance in piston
Wear limit
11
11.12
R 1150 RT
mm (in) 1.97...1.99 (0.0776...0.0783)
mm (in) 1.9 (0.0748)
mm (in) 0.30...0.55 (0.0118...0.0217)
mm (in) 1.20 (0.0472)
mm (in) 0.020...0.060 (0.0008...0.0024)
mm (in) 0.15 (0.0059)
mm (in) 21.995...22.000 (0.8664...0.8662)
mm (in) 21.960 (0.8646)
mm (in) 22.005...22.011 (0.8663...0.8666)
mm (in) 0.005...0.016 (0.0002...0.0006)
mm (in) 0.070 (0.0028)