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Home >> Audi >> 2017 >> A7 Quattro Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 114 (Engine System (Crankshaft & Cylinder Block - Service Information - 4.0L - CEUC, CRDB, CTGE, CWUB, CWUC)) >> Crankshaft, Cylinder Block >> Piston And Connecting Rod >> Pistons And Cylinder Bore, Checking >> Clean The Piston Ring Groove Before Checking

Clean The Piston Ring Groove Before Checking

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GWWN13-10569Courtesy of AUDI OF AMERICA, LLC

-- Clean the piston ring groove before checking.

Piston Ring New mm Wear Limit mm
1st Compression ring 0.035 to 0.085 0.200
2nd Compression ring 0.005 to 0.045 0.150
Oil scraping ring 0.020 to 0.055 0.200
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