Skoda Workshop Service and Repair Manuals

Installing and tensioning   Note t  Adjusting work on the timing belt must only be performed on a cold engine. t  When rotating the camshaft, the crankshaft must not be positioned at TDC for any one piston. Risk of damaging valves and pistons. l  Interlock camshaft with locking pin e. g. -3359- or -MP1-301-. l  Interlock the crankshaft with the crankshaft arrester -T10050-. l  Interlock tensioning pulley in released position with fixing nut.

–  Pay attention to the correct fitting of the tensioning pulley in the opening in the rear timing belt guard -arrow-.

–  Slightly screw in screws -arrows-.   Note It must still be possible to turn the camshaft sprocket on the hub, however it must not hang loose. –  Turn camshaft sprocket clockwise in the elongated holes as far as the stop. –  Fit toothed belt onto crankshaft toothed belt sprocket, tensioning pulley, camshaft and, last of all, onto the toothed belt sprocket of the coolant pump. –  Install guide pulley of toothed belt → Item.

–  Remove rig tool -T10265- from the tensioning pulley and loosen its fixing nut. –  Turn the eccentric of the tensioning pulley with offset screwdriver -T10264- clockwise -arrow- in such a way until the pointer -2- stands in the centre of the base plate in the gap.   Note Ensure that the fixing nut does not turn. –  Hold the tensioning pulley in this position and tighten the fixing nut to 20 Nm + torque a further 45° (1/8 turn).   Note When tightening the fixing nut, the pointer turns -arrow- max. 5 mm to the right from the gap of the base plate. This position must not be corrected, because the toothed belt settles when running-in.

–  Position the counterholder -T10172- at the camshaft sprocket as shown and pretension the timing belt in the -direction of the arrow-. –  Keep the fixing bolts -1- of the camshaft sprocket under tension to 20 Nm + torque a further 45° (1/8 turn). –  Remove locking pin -MP1-301- or - 3359- and crankshaft arrester -T10050-. Test timing –  Turn the crankshaft two turns in the direction of running of the engine until the crankshaft is positioned shortly before TDC for cylinder 1.

–  Interlock during this motion the hub in the direction of running of the engine with locking pin -3359-.

–  Check whether: t  the crankshaft can be interlocked with the crankshaft arrester -T10050 -. t  The pointer of tensioning pulley stands in the centre or max. 5 mm to the right from the gap of the base plate. If the crankshaft cannot be arrested

–  Loosen bolts -arrows- of the camshaft timing gear.

–  Rotate crankshaft in direction of rotation of engine until the crankshaft can be arrested with the crankshaft arrester -T10050-.   Note If the crankshaft can be turned via the TDC for cylinder 1, turn crankshaft back slightly and once again set to the TDC for cylinder 1 by turning in direction of rotation of engine.

–  Position the counterholder -T10172- at the camshaft sprocket as shown and pretension the timing belt in the -direction of the arrow-. –  Keep the fixing bolts -1- of the camshaft sprocket under tension to 20 Nm + torque a further 45° (1/8 turn). –  Remove locking pin -MP1-301- or -3359- and crankshaft arrester -T10050-. –  Turn crankshaft 2 turns in the direction of running of the engine until the crankshaft is again on TDC. –  Repeat timing test. Proceed with installation Further installation occurs in reverse order for removal, while paying attention to the following:   Note t  Replace gaskets. t  Pay attention to different hose connections. Secure all hose connections depending on the version with hose clips or retaining clips.   Caution The tightening sequence and the tightening torque of the fixing screws for the engine support must definitely be respected. Otherwise stress of the engine support occurs, which results in the breaking of the engine support. –  Screw in screws -1...3- by hand first.

–  Tighten screws in the order shown -1...3- and 40 Nm + torque a further 180° (1/2 turn).   Note t  To do so, raise or lower engine with the supporting device -MP9-200 (10-222A) -. t  The engine support must be tightened up firmly before further installation of the right engine mounting. –  Install bottom, middle and top timing belt guard. –  Install belt pulley with vibration damper. –  Install and adjust the engine mount → Chapter and → Chapter. –  Install tensioning device for V-ribbed belt. Tighten screws to 25 Nm. –  Install the V-ribbed belt → Chapter. –  Install charge air pipes and charge air hoses → Chapter. –  Install fuel filter, coolant expansion reservoir and power-steering reservoir. –  Install the front right wheelhouse liner → Body Work → Rep. Gr.66.