30
Audi TT Quick Reference Specification Book • May 2009
Sealing Flanges and Vibration Damper –
Tightening Torques
Component
nm
Belt pulley/vibration damper to cylinder block bolt
70
Sealing flange on belt pulley side to cylinder block bolts
10
Vibration damper to crankshaft
100 plus an
additional
90° (¼ turn)
Control housing cover bolts
25
Engine speed (RPM) sensor G28 to control housing
cover bolts
5
Tensioning element to auxiliary component bracket
35
Sealing plug to cylinder block at rear
30
Crankshaft Assembly – Tightening Torques
Component
nm
Bearing cap to cylinder block bolts
30 plus an
additional 180°
(½ turn)
Crankshaft Dimensions
Reconditioning
dimension, dimensions in mm
Crankshaft
bearing
pin diameter
Connecting rod
bearing
pin diameter
Basic dimension
1)
59.958 to 59.978
53.958 to 53.978
1)
Reworking is not permitted.
Piston and Connecting Rod – Tightening Torques
Component
nm
Connecting rod bearing cap to connecting rod bolts
30 plus an
additional 90°
(¼ turn)
Pressure relief valve to oil spray jet
27
Piston Ring End Gaps
Piston ring (dimensions in mm)
new
Wear limit
Compression ring
0.20 to 0.40
1.00
Tapered ring
0.20 to 0.40
1.00
Oil scraping ring
0.25 to 0.50
1.00
