Skoda Workshop Service and Repair Manuals

Removing and installing camshaft Special tools and workshop equipment required t  Counterholder -T30004 (3415)- t  Sealant remover gasket stripper (bearing code GST, bearing article no. R 34402), manufacturer Retech s.r.o. t  Cleaning and degreasing agent, e.g. -D 009 401 04- t  Protective goggles and gloves t  Sealant -D 188 800 A1-   Note Observe safety measures and rules for cleanliness when working on vehicles with liquefied petroleum gas system (LPG) → Chapter. Removing l  Cylinder head fitted. –  Removing the intake manifold → Chapter. –  Remove top toothed belt guard.

–  Position camshaft sprocket to TDC marking for cylinder 1 by rotating at crankshaft. The marking on the camshaft sprocket must be aligned with the arrow on the toothed belt guard. –  Slacken tensioning pulley and take timing belt off camshaft sprocket.

–  Loosen the camshaft sprocket, to do so use counterholder -T30004 (3415)-. –  Pull off camshaft sprocket. –  Remove Woodruff key from the camshaft. –  Slacken the bolts for the cylinder head cover from the outside to the inside. –  Remove cylinder head cover.

–  Unscrew rear toothed belt guard from cylinder head -arrows-. –  Unscrew the nuts of bearings 5, 1 and 3. Then, slacken bearings 2 and 4 alternately diagonally across. –  Take off ladder frame. –  Take out camshaft. –  Remove the roller rocker arms together with the balancing elements. Lay aside on a clean surface. –  Ensure that the roller rocker arms and the balancing elements are not mixed up.

Install   WARNING Wear protective gloves when working with sealant and grease remover! –  Remove the old sealant from the groove -arrow- of the ladder frame as well as from the sealing surfaces and the cylinder head using a chemical sealant remover. –  Degrease the sealing surfaces. –  Cut off nozzle tube at the front marking (Ø of nozzle approx. 1 mm).

–  Insert the hydraulic balancing elements in the cylinder head and position the relevant roller rocker arm on the valve stem ends or balancing elements. –  Ensure that all the roller rocker arms are correctly positioned on the valve stem ends -1- and are clipped in place on the relevant balancing elements -2-. –  Oil contact surfaces of camshaft.

–  Position camshaft in TDC position of cylinder 1: l  At the camshaft, the cams of cylinder 1 must be pointing up evenly -arrows-.

–  Apply an even, thin layer of sealant -D 188 800 A1--1- and -2- into the clean groove of the ladder frame. –  Apply a thin layer of sealant on the surfaces before the ends of the sealant bead -arrows- as well as onto the sealing surface.   Note t  The sealant must not be applied too thick. Wipe off any excess sealant with a non-fluffing cleaning cloth. t  The ladder frame should be fitted on and bolted without any interruption as the sealing surfaces immediately begin hardening as soon as they come into contact. –  Insert the rear screw cap → Item flush.

–  Position ladder frame and slightly tighten the nuts -3-, -4-, -5-, -6- in several stages crosswise. –  Then, slightly tighten the nuts -1-, -2-, -7-, -8-, -9-, -10-. –  Then tighten the nuts in the sequence -1…10-. Tightening torque: 23 Nm –  Replacing camshaft gasket ring → Chapter. –  install (set the timing) → Chapter.   Note t  After installing the ladder frame and the cylinder head cover, allow the sealant to dry for about 30 minutes. t  After installing the camshaft, the engine must not be started for about 30 minutes. The hydraulic clearance compensation elements must settle (otherwise valves would strike the pistons). t  After carrying out work on the valve gear, carefully crank engine at least 2 revolutions to ensure that no valve touches the piston when the engine is started.