audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Separating parts of new conrod > < Pistons and conrods - exploded view
Removing and installing pistons
Removing and installing pistons
Special tools and workshop equipment required
   
t  Drift -VW 222 A-
t  Piston ring clamp, commercially available
Removing
l  Engine secured to engine and gearbox support -VAS 6095- → Chapter
–  Remove cylinder head → Chapter.
–  Remove upper section of sump → Chapter.
–  Mark installation position and cylinder number of piston.
–  Mark installation position and cylinder number of conrod → Item.
–  Remove conrod bearing cap and pull out piston and conrod upwards.
  Note
If piston pin is difficult to remove, heat piston to approx. 60 °C.
–  Take circlip out of piston pin boss.
–  Use drift -VW 222 A- to drive out piston pin.
Installing
Installation is carried out in the reverse order; note the following:
l  Tightening torques → Chapter „Pistons and conrods - exploded view“
  Note
t  Renew the bolts tightened with specified tightening angle.
t  Arrow on piston crown points to pulley end.
t  Piston ring gaps should be spaced at 120°.
–  Oil running surfaces of bearing shells.
–  Install piston using commercially available piston ring clamp; note installation position → Item.
–  Install conrod bearing cap; note installation position → Item.
–  Install cylinder head → Chapter.
–  Install sump (upper section) → Chapter.
  W00-0236

Separating parts of new conrod > < Pistons and conrods - exploded view