Checking pistons and cylinders Assembling pistons Reference temperature for measurements: ......20 ° C (68 ° F) • Measure cylinder bore with internal probe at 20 mm (0.79 in) and 100 mm (3.94 in) from the top in direction of piston pin, and again at a right angle to the first measurement. a ............................................See Technical data A RS110970 Measuring plane A: ......................... 6 mm (0.24 in) a ............................................See Technical data • Install piston rings in cylinder. RS110200 • Determine piston ring clearance using feeler gauge. a ............................................See Technical data 11.31 R 850 1. 12. 3.
RS110190 • Carefully fit piston rings to piston in the following sequence, using piston ring pliers: 3rd groove - equal chamfer ring 2nd groove - micro-chamfer ring 1st groove - asymmetric, convex oval-section a ............................................See Technical data e Caution: The tubular-spring ring gap must be at 180° to the equal-chamfer ring gap. Install with “Top” uppermost. 20 100 RS110180 RS110180