RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
^
Axial play for each new connecting rod pair: 0.20 to 0.27 mm
^
Axial play wear limit: 0.30 mm
^
Radial clearance, measuring
^
Insert connecting rod with correct identification letter
5 - Piston pin
^
If tight, heat piston to 60 degrees C
6 - Circlip
7 - Piston
^
Installation position of pistons
^
Piston and cylinder dimension, piston allocation to cylinder bore
^
Checking
^
Install with piston ring compressor
^
Measuring cylinder bore
8 - Piston rings
^
Offset gaps by 120 degrees
^
Use piston ring pliers for removal and installation
^
"TOP" marking or inscribed side must point to piston head
^
Gap, measuring
^
Measuring side clearance
Piston ring end gap, measuring
-
Slide piston ring down from above at a right angle to cylinder wall until it is approx. 15 mm from bottom edge of cylinder.
-
When sliding in, use a piston without piston rings.