Skoda Workshop Service and Repair Manuals

Installing and tensioning   Note t  Always perform adjusting work on the timing belt only 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.

–  Turn camshaft sprocket clockwise in the slots -arrow- as far as the stop.   Note It must still be possible to turn the camshaft sprocket on the hub, however it must not hang loose. For vehicles ► 04.01

–  Carefully turn eccentric in clockwise direction with the wrench for tensioning pulleys -C- sufficiently until the lug on the eccentric is right in front of stop -B-. –  Fit timing belt onto camshaft sprocket, tensioning pulley, crankshaft timing belt sprocket and onto the timing belt sprocket of the coolant pump. –  Install the tensioning device for toothed belt. –  Install guide pulley → Item –  Carefully turn eccentric in an anti-clockwise direction with a wrench for tensioning rollers -C- (the lug on the eccentric moves toward the stop -A-) until it is possible to move the locking plate -T10008- away slightly. –  Turn wrench in clockwise direction long enough until gap size -a- is achieved. (The lug on the eccentric moves toward the stop -B-).    Specification -a-: 4 ±1 mm.   Note t  Use e.g. a Ø 4 mm drill bit to adjust gap size -a-. t  Gap size -a- becomes smaller after the tensioning pulley is tightened. This fact should therefore be taken into account when setting with Ø 4 mm drill bit. t  On a warm engine dimension -a- can decrease to 1 mm. –  Hold tensioning pulley in this position and tighten nut of tensioning pulley as follows:    20 Nm + torque a further 1/8 turn (45°) For vehicles 05.01 ► l  Interlock camshaft with locking pin e. g. -3359- or -MP 1-301-. l  Interlock the crankshaft with the crankshaft arrester -T10050-. l  Interlock tensioning pulley in released position with fixing nut.

–  Check the correct catch fitting of the tensioning pulley in the hole in the rear timing belt guard -arrow-. –  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.

–  Loosen the fixing nut -1- of the tensioning pulley. –  Turn the eccentric of the tensioning pulley with two-hole nut turner (e. g. -T10020- or with Allen key) clockwise 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.

–  Firmly hold the eccentric of the tensioning pulley in this position and tighten 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. For all vehicles

–  Tighten bolts of camshaft sprocket -arrows- to tightening torque of 25 Nm + torque a further 45° (1/8 turn). –  Remove locking pin - MP 1-301- or -3359- and crankshaft arrester -T10050-.