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Home >> Mercedes Benz >> 1996 >> E320 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crank Assembly - Testing & Repair - 210 Chassis >> Testing & Repair >> Measure end clearance of piston rings - AR03.10-P-7311-01V

Measure end clearance of piston rings - AR03.10-P-7311-01V

Modification notes

12.6.02 Value in series 1001 for engine 113.967 modified from 0.012...0.060 to 0.033...0.07 and from 0.010...0.030 to 0.01...0.04 Value in BE03.10-P-1001-05B for engine 113.967 modified *BE03.10-P-1001-05B 
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-1001-05B Piston ring vertical clearance Groove 1 mm 0.012...0.060 0.012...0.060 0.012...0.060
Groove 2; mm 0.010...0.030 0.010...0.030 0.010...0.030
Inspection data for piston rings

Number Designation Engines 113.960/961/ 962/963/964/ 965/968/971 Engine 113.967
BE03.10-P-1001-05B Piston ring vertical clearance Groove 1 mm 0.012...0.060 0.033...0.070
Groove 2 mm 0.010...0.030 0.01...0.04
Commercially available tools

Number Designation
WH58.30-Z-1004-12A Feeler gauge
  1. Measure the side clearance of the compression rings between the compression ring and the mounting groove in the piston with a COMMERCIALLY AVAILABLE TOOLS feeler gauge. Replace the compression rings or the piston if necessary.

    IMPORTANT The end 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 Side Clearance Of Compression Rings
    G04605654Courtesy of MERCEDES-BENZ OF NORTH AMERICA.