RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
‹› Only replace as set
‹› Mark affiliation to cylinder with paint, refer to => [ Mark Connecting Rod ]
‹› Installation position of connecting rod pairs, refer to => [ Connecting Rod, Installed Location ]
‹› Axial play for each new connecting rod pair: 0.20 to 0.27 mm
‹› Axial play wear limit: 0.30 mm
‹› Radial clearance, measuring, refer to => [ Connecting Rod, Measuring Radial Clearance ] See: Connecting Rod/Specifications/Connecting
Rod, Measuring Radial Clearance
‹› Insert connecting rod with correct identification letter, refer to => [ Connecting Rod, Allocating with Connecting Rod Bearing Shells to
Crankshaft ] See: Connecting Rod Bearing/Service and Repair/Removal and Replacement
5
Piston pin
‹› If tight, heat piston to 60 °C
‹› Removing and installing using a Drift (VW 222 A )
6
Circlip
‹› Replace
7
Piston
‹› Installation position of pistons, refer to => [ Piston installation position ]
‹› Piston and cylinder dimension, piston allocation to cylinder bore, refer to => [ Piston and Cylinder Dimensions ] See: Specifications
‹› Checking, refer to => [ Pistons, Checking ] See: Testing and Inspection
‹› Install with piston ring compressor
‹› Measuring cylinder bore, refer to => [ Cylinder Bore, Measuring ] See: Testing and Inspection
8
Piston rings
‹› Offset gaps by 120°
‹› Use piston ring pliers for removal and installation
‹› "TOP" marking or inscribed side must point to piston head
‹› Gap, measuring, refer to => [ Piston Ring End Gap, Measuring ] See: Piston Ring/Testing and Inspection/Piston Ring End Gap, Measuring
‹› Measuring side clearance, refer to => [ Piston Ring Side Clearance, Measuring ] See: Piston Ring/Testing and Inspection/Piston Ring Side
Clearance, Measuring
Piston installation position