audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Engine cylinder head, valve gear > < Piston and cylinder dimensions
Checking radial clearance of conrod bearings
Checking radial clearance of conrod bearings
Special tools and workshop equipment required
t  Plastigage
Test sequence
–  Remove conrod bearing caps.
–  Clean bearing caps and bearing journals.
–  Place Plastigage onto bearing journal or into bearing shells corresponding to width of bearing.
l  The Plastigage must be positioned in the centre of the bearing shell
–  Fit conrod bearing cap and tighten to 30 Nm. Do not rotate crankshaft.
–  Remove conrod bearing caps once more.
–  Compare width of Plastigage with measurement scale:
Radial clearance:
l  New: 0.015 ... 0.062 mm.
l  Wear limit: 0.12 mm.
–  Renew bolts for conrod bearings.
   

Engine cylinder head, valve gear > < Piston and cylinder dimensions