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Home >> Mercedes Benz >> 1997 >> E320 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crank Assembly - Testing & Repair - 210 Chassis >> Testing & Repair >> Measure piston ring end clearance - AR03.10-P-7311-02V

Measure piston ring end clearance - AR03.10-P-7311-02V

Inspection data for piston rings

Number Designation Engine 112.910/911/912 Engines 112.920/ 921/922/923/ 940/941/942/ 943/944/945/ 946/947/948/ 960, Engine 113.940/941/942/943 Engines 113.944/980/ 981/982/984
BE03.10-P-1002-05B Piston ring end gap Groove 1 mm 0.200...0.350 0.200...0.350 0.200...0.350
Groove 2 mm 0.200...0.400 0.200...0.400 0.200...0.400
Inspection data for piston rings

Number Designation Engines 113.960/961/ 962/963/964/ 965/968/971 Engine 113.967
BE03.10-P-1002-05B Piston ring end gap Groove 1 mm 0.200...0.350 0.200...0.350
Groove 2 mm 0.200...0.400 0.200...0.400
Commercially available tools

Number Designation
WH58.30-Z-1004-12A Feeler gauge
  1. Clean cylinder wall.
  2. Insert the two compression rings one after the other into the unworn area of the cylinder barrel and measure the end gap with a COMMERCIALLY AVAILABLE TOOLS feeler gauge. Replace the piston rings if necessary.

    IMPORTANT The gap clearance of the oil scraper ring cannot be checked because of its three-part design. The oil scraper ring must also be replaced when the compression rings are replaced.

    Fig 1: Measuring Cylinder Barrel End Gap
    G04605655Courtesy of MERCEDES-BENZ OF NORTH AMERICA.