Audi Workshop Service and Repair Manuals

Removing and installing balance shaft assembly with oil pump Special tools and workshop equipment required

t  Locking pin -T10027- Removing –  Remove sump → Chapter.   WARNING The engine must only be turned at the crankshaft, in the direction of normal engine rotation (clockwise).   Note Apply spanner to central bolt of crankshaft for turning engine.

–  Set camshaft sprocket to TDC marking by turning crankshaft. Marking on camshaft sprocket must align with arrow on toothed belt cover.

–  Pull off chain guard. Retaining tabs can be released with a small screwdriver (insert in openings -arrows-).

–  Loosen bolt on oil pump chain sprocket. Counterhold on central bolt of vibration damper.

–  Use screwdriver to slacken chain rail -arrow- and lock it in position using a 3 mm Allen key -1-.

–  Detach oil pump chain sprocket and disengage chain at balance shaft drive.

–  Remove baffle plate by unscrewing bolts -1 and 2-.

–  Loosen bolts -arrows- on balance shaft assembly, working from outside inwards, and then remove balance shaft assembly. Installing l  Chain tensioner must be pre-tensioned → Chapter. l  Tightening torques → Chapter „Part I: Sump, balance shaft assembly - exploded view“, → Chapter „Part II: Balance shaft assembly with oil pump - exploded view“. –  Renew all bolts on balance shaft assembly; note different bolt lengths → Fig.. –  Renew seal on bolt for balance shaft assembly → Item.

–  Fit spacer plate onto dowel sleeves on balance shaft assembly as shown -arrows-. –  Install balance shaft assembly with oil pump and spacer plate. Tighten securing bolts → Fig..   Note Note different bolt lengths. → Fig.

–  Install baffle plate. To do so, insert pins in balance shaft assembly -arrows- and tighten bolt -1- and bolts -2- to specified torque → Item, → Item.   Note Apply spanner to central bolt of crankshaft for turning engine.

–  Rotate engine to TDC of No. 1 cylinder by turning central bolt of crankshaft sprocket in normal direction of rotation. Marking on camshaft sprocket and marking on crankshaft must be aligned to TDC of cylinder No. 1 -arrows-.

–  Marking on chain sprocket of balance shaft -arrow- must be positioned opposite the locating hole. Use locking pin -T10027- to lock chain sprocket in this position. Place chain on chain sprocket of balance shaft. –  Install oil pump chain sprocket with new bolt and hand-tighten the bolt.   Note The oil pump chain sprocket can only be installed correctly in one position. When installing, you may ONLY turn the oil pump.

–  Remove locking pin -T10027- and Allen key -1-. Secure oil pump chain sprocket. Counterhold on central bolt of vibration damper. Further assembly is basically carried out in reverse order of dismantling. –  Install sump → Chapter.