Skoda Workshop Service and Repair Manuals

Setting the timing Special tools and workshop equipment required t  Adapter for dial gauge -T10170- or -T10170 A- t  Camshaft fixer/locator -T10171 A- Change camshaft fixer/locator -T10171- in camshaft fixer/locator -T10171 A- → Chapter. t  Counterholder -T10172- t  Locating screw -T10340- t  Counterholder -T30004 (3415)- t  Rig pin -T40011- t  Dial gauge, commercially available Work procedure –  Remove engine cover → Chapter.

–  Release screws -2- and remove retaining clip -1-. –  Disconnect plug -3- from charge pressure sender -G31- with intake air temperature sender 2 -G299-. –  Unhook the hoses at the pressure pipe and open the cable guide. –  Press the retaining clips -arrows- towards the outside and pull the pressure pipe out towards the top. –  Then pull off the pressure pipe from the exhaust turbocharger.

–  Disconnect plug -arrow- at oil pressure switch -F1-.

–  Release screw -1- for earth lead.

–  Release screws -1- and -2- and push the left coolant pipes to the left side.

–  Release screws -arrows-, take off cap -1- and -2-. –  Remove timing case → Chapter.

–  For turning the crankshaft insert the bushing, the crankshaft belt pulley -2- and the fixing screw -3- and tighten the fixing screw (use counterholder -T30004 -). –  Remove ignition coil from cylinder 1 → Chapter and release the spark plug.

–  Screw adapter for dial gauge -T10170 - up to the stop into the spark plug thread. –  Insert the dial gauge -A- with extension -T10170/1- up to the stop and fix in place using the clamping screw -arrow-. –  Rotate the crankshaft in direction of rotation of engine on TDC for cylinder 1. Note down the position of the small pointer of the dial gauge. –  Turn crankshaft 45° in the opposite direction of rotation of the engine.

–  Press the tensioning rail -1- in -direction of arrow- and interlock the piston with the rig pin -T40011-.

–  Mark with a suitable felt-tip pen the direction of rotation of the timing chain -3-.   Note The fixing screw of the camshaft adjuster -2- has a left-hand thread. –  Release screws -2- and -4- and remove the camshaft adjuster -1- with the timing chain -3-. Use counterholder -T10172- to counterhold. –  Mount again camshaft adjuster -1-. –  Replace screws -2- and -4- and tighten screw -2- to 40 Nm and screw -4- to 50 Nm; to do so use counterholder -T10172-.

–  Turn the inlet and exhaust camshaft until the camshaft fixer/locator -T10171 A- can be inserted up to the stop into the camshaft openings. l  The locking bolts -arrows 1- must engage in the holes -arrows 2-. The inscription “TOP”-arrow 3- must be legible from above.   Note When turning, the camshafts must not be moved axially.

–  To secure the camshaft fixer/locator -T10171 A- screw in a M6 screw into the corresponding hole -arrows- by hand; do not tighten.   Note Pay attention that there are different fixing points for the camshaft fixer/locator -T10171 A-. –  Slacken the screws of the camshaft chain sprockets. Absolutely use counterholder -T10172-.   Caution Do not use the camshaft fixer/locator -T10171 A- as a counterholder. –  Removing the camshaft sprocket. –  Place the timing chain onto the camshaft chain sprockets in compliance with the running direction and reinsert the removed chain sprocket. –  Screw in the camshaft screws so far so that the camshaft chain sprockets can still be turned on the camshaft. –  Tighten the timing chain, by pulling out the rig pin -T40011- .

–  Rotate the crankshaft in direction of rotation of engine on TDC for cylinder 1. l  Permissible deviation from TDC of cylinder 1: ± 0.01 mm.   Note If the crankshaft was turned more than 0.01 mm past the top dead centre, the crankshaft must once again be turned approx 45° in the opposite direction of rotation of the engine. Then position the crankshaft in direction of rotation of engine on top dead centre of cylinder 1.

–  Unscrew screws -1- (8 Nm) and -3- (40 Nm), remove bracket -2- for right coolant pipe.

–  Unscrew screw plug -arrow- for “TDC” bore hole at cylinder block.

–  Turn the fixing screw -T10340- up to the stop in the cylinder block and tighten to 30 Nm.   Note The crankshaft is only locked in direction of rotation of engine with the fixing screw -T10340-.

–  Hold the camshaft chain sprockets -1- and -5- in this position with the counterholder -T10172- and tighten the screws -2- (left-hand thread) to 40 Nm and -4- to 50 Nm.   Note When tightening the camshaft screws, the crankshaft must not turn and the timing chain -3- must remain tightened on both sides. –  Remove the camshaft fixer/locator -T10171 A -.

–  Unscrew the fixing screw -T10340- from the cylinder block. –  Turn the crankshaft in direction of rotation of engine by 2 turns on TDC for cylinder 1. l  Permissible deviation from TDC of cylinder 1: ± 0.01 mm.

–  Insert camshaft fixer/locator -T10171 A - up to the stop into the holes in the camshaft housing. If the camshaft fixer/locator -T10171 A- is not insertable. –  Repeat setting. If the camshaft fixer/locator -T10171 A- is insertable.

–  Turn the fixing screw -T10340- up to the stop in the cylinder block. –  Tighten fixing screw -T10340- to 30 Nm.

–  Remove the camshaft fixer/locator -T10171 A -, hold the camshaft chain sprockets with the counterholder -T10172 - and torque the screws -2- (left-hand thread) and -4- a further 90° (1/4 turn) with a rigid wrench.   Note t  The fixing screw of the camshaft adjuster -2- has a left-hand thread. t  The camshaft chain sprockets must not be turned on the camshaft when tightening. Further installation occurs in a similar way in reverse order to removal. Pay attention to the following:   Note The locating screw -T10340- remains in the cylinder block until the installation of the crankshaft belt pulley. t  Install timing case → Chapter. t  Install crankshaft belt pulley → Chapter. t  Install the V-ribbed belt → Chapter. t  Replace the gasket rings for the caps of the camshafts and oil before assembly.