Skoda Workshop Service and Repair Manuals

Removing and installing camshaft timing chain Special tools and workshop equipment required t  Assembly tool -T10352- or assembly tool -T10352/1- t  Rig pin -T40011- Removing –  Remove top cover for timing chain → Chapter.   Caution The control valve has a left-hand thread.

–  Remove the control valve in the -direction of the arrow-: t  for engine identification character BZB with assembly tool -T10352- t  for engine identification characters CDAA, CDAB, CCZA with assembly tool -T10352/1-

–  Release screws -arrows- and remove bearing bracket.

–  Turn the vibration damper with the counterholder -T10355- into position “TDC for cylinder 1”-arrow-. l  The notch at the vibration damper must be opposite the arrow marking on bottom cover for timing chain. l  The markings -1- of the camshaft must point upwards. –  Remove bottom cover for timing chain → Chapter.

–  Press the chain tensioner of the oil pump in -direction of arrow- and lock with rig pin -T40011-. –  Remove chain tensioner of oil pump -1-. –  Remove drive chain for oil pump from chain sprocket at the crankshaft.   Note For the following working step a second mechanic is required.

–  Use a suitable cross-head screwdriver (approx. 2 mm) to lift the locking wedge of the chain tensioner in -direction of arrow 1-, press the tensioning rail in -direction of arrow 2- and secure the chain tensioner with rig pin -T40011-.   Caution t  The lock washer -A- of the chain tensioner must not be bent or levered off! t  If the automatic resetting of the chain tensioner does not function, the timing chain can jump over a tooth at a cold start - risk of engine damage!

–  Remove tensioning rail -2-.   Note The inlet camshaft jumps in the running direction of the engine. –  Remove sliding rail -1-. –  Remove timing chain. Install   Note t  The following work sequence must be performed in one work step, to do so a second mechanic is required. t  The coloured links of the timing chain must be positioned on the markings of the chain sprockets. t  Hold the wrench until the sliding rail and the tensioning rail are installed.

–  Check if the crankshaft is on “TDC for cylinder 1”.

–  Place timing chain onto outlet camshaft. –  Place timing chain onto crankshaft. –  Turn inlet camshaft with wrench in -direction of arrow- and fit timing chain.

–  Install sliding rail and tighten screws -1-. –  Install tensioning rail and tighten screw -2-.

–  Fit on bearing bracket and screw in screws -arrows- by hand. –  Remove the locking pin -T40011-. –  Tighten the screws -arrows- of the bearing bracket → Chapter. –  Install control valve (left-hand thread) → Chapter. Further installation occurs in reverse order. Pay attention to the following: t  Tightening torques: → Chapter –  Install bottom cover for timing chain → Chapter. –  Install top cover for timing chain → Chapter.