Volkswagen Workshop Service and Repair Manuals

Removing and installing timing chain and drive chain for oil pump Special tools and workshop equipment required

t  Counterhold tool -T10172- Removing –  Remove valve timing housing → Chapter. –  Lock camshafts and crankshaft → Chapter. –  Lever spring wire -1- out of stud using a screwdriver.

–  Unscrew securing bolt -2- and remove chain tensioner. –  Remove securing bolt -3-. Counterhold the wheel using counterhold tool -T10172-. –  Remove chain sprocket for oil pump, drive chain and drive sprocket.

–  Press tensioning plate by hand in -direction of arrow- and lock chain tensioner using 3 mm hexagon key -1-.

–  Remove securing bolt -1-. Use counterhold tool -T10172- for this. –  Pull tensioning plate -3- and guide rail -2- forwards off guide pins. –  Remove timing chain from chain sprockets. Installing –  Place timing chain on crankshaft chain sprocket and camshaft chain sprocket. –  Push tensioning plate -3- and guide rail -2- forwards onto guide pins.

–  Install second camshaft chain sprocket using new securing bolt -1-. Specified torque for securing bolt for chain sprocket: 50 Nm + turn 90° further. –  Use counterhold tool -T10172- for this. –  Position drive chain for oil pump together with both chain sprockets. –  Fit new securing bolt to oil pump sprocket.

Specified torque for chain sprocket -3- on the oil pump: 20 Nm + turn 90° further. –  Install chain tensioner for the oil pump drive. Torque setting for sprocket securing bolt -2-: 15 Nm –  Use counterhold tool -T10172- for this. –  Lever spring wire -1- onto stud using a screwdriver. –  Tension timing chain by removing 3 mm hexagon key from of chain tensioner. –  Check valve timing → Chapter –  Install timing housing → Chapter. Further assembly is basically the reverse of the dismantling sequence.