TT Coupe L4-2.0L Turbo (CCTA) (2008)
‹› Installed location => [ Installed position of bearing shell ]
‹› Do not interchange used bearing shells (mark)
‹› Axial play new: 0.10 to.35 mm Wear limit: 0.40 mm
‹› Measure radial clearance with Plastigage (R): New: 0.02 to.06 mm Wear limit: 0,09 mm. Do not turn crankshaft when checking radial
clearance
4
Pressure relief valve
27 Nm
5
Oil spray jet
‹› For piston cooling
6
Circlip
7
Piston pin
‹› If difficult to move, heat piston to approximately 60 °C
‹› Removing and installing using a drift (VW 222 A )
8
Piston
‹› Checking => [ Pistons, Checking ] See: Testing and Inspection
‹› Mark installed position and cylinder allocation
‹› Arrow on piston face points toward belt pulley side
‹› Install with piston ring compressor
‹› Piston and cylinder dimensions => [ Installed position of bearing shell ] => [ Piston and Cylinder Dimensions ] See: Specifications
‹› Cylinder bore, checking => [ Cylinder Bore, Checking ] See: Testing and Inspection
9
compression rings
‹› Offset gaps by 120°
‹› Use piston ring pliers for removal and installation
‹› The "TOP" or "R" marking must face toward the piston crown.
‹› Checking ring gap => [ Piston Ring Gap, Checking ] See: Piston Ring/Testing and Inspection/Piston Ring Gap, Checking
‹› Check piston ring groove clearance => [ Piston Ring Groove Clearance, Checking ] See: Piston Ring/Testing and Inspection/Piston Ring
Groove Clearance, Checking
10
Oil scraping ring
‹› 2-part
‹› Install the upper steel ring so the gap is offset by 120° to the adjacent compression ring.
‹› Offset all oil scraping ring component gaps to each other.
‹› Checking ring gap => [ Piston Ring Gap, Checking ] See: Piston Ring/Testing and Inspection/Piston Ring Gap, Checking
‹› Side clearance cannot be measured.
11
Connecting rod