SEAT Workshop Service and Repair Manuals

Removing and installing camshaft t  Removing → Anchor t  Installing → Anchor t  Tightening torques → Anchor Consult the equivalence table for tools and equipment according to applicability between Seat / VW / Audi / Skoda → Chapter Special tools and workshop equipment required

t  Hose clamp -3415-, see equivalent → Anchor

t  Torque wrench -VAG 1332-, see equivalent → Anchor. t  Electric drill with plastic brush attachment t  Protective glasses t  Sealant for joints → Spare parts catalogue Removing   Note t  Sealing surfaces at ladder frame and cylinder head may be cleaned but not machined. t  Camshaft bearings are integrated into cylinder head/ladder frame. Toothed belt must be detached before removing retaining frame. t  Renew camshaft oil seal and sealing cap at rear if retaining frame has been unfastened. –  Take notched belt off camshaft sprocket → Chapter.

–  Loosen camshaft sprocket. To do this use counter hold -3415-. –  Take camshaft gear off. –  Remove spring buckle from the camshaft.

–  Loosen the bolts -arrows- and remove the rear toothed belt guard.

–  Separate vent hose for oil pan from cylinder head cover. –  Unscrew the bolts for the cylinder head cover in the sequence -8 … 1-. –  Remove cylinder head cover.

–  Unscrew nuts -1-, -2-, -7-, -8-, -9- and -10-. –  Unscrew nuts -3-, -4-, -5- and -6- in several stages and in diagonal sequence. –  Take conductor frame off. –  Take camshaft off. Installing   Note Renew gaskets and seals. l  Pistons must not be at TDC. l  Prevent dirt and sealant remains from entering the cylinder block.

–  Remove the old sealant out of the conductor frame groove -arrow- as well as from the sealing surfaces. –  Remove sealant residues on the cylinder head, e.g. with a rotating plastic brush.   WARNING Wear eye protection. –  Clean sealing surfaces; they must be free of oil and grease.

–  Cut off the tube nozzle on the front marking (diameter of the nozzle approximately. 2 mm).

–  Ensure that all roller rocker fingers contact valve stem ends -1- correctly and that they are clipped into their respective support elements -2-.

–  Oil the camshaft contact surfaces. –  Fit the camshaft in TDC position for cylinder 1: l  No. 1 cylinder cams must point upwards -arrows-.

–  Apply an even bead of sealant -1- and -2- onto the clean groove of the retaining frame (slightly projecting from the groove). –  Apply a thin coating on the sealing surface to the surfaces at the sealant length ends -arrows-.   Note t  The sealant must not be applied too thickly. Remove excess sealant with a cloth that does not fray. t  No time should be allowed to elapse when fitting and securing retaining frame, as sealant starts to harden immediately. –  Fit rear bolt → Item flush.

–  Fit the conductor frame and tighten lightly the nuts -3-, -4-, -5- and -6- in several stages using cross-over sequence. –  Then tighten nuts -1-, -2-, -7-, -8-, -9- and -10- slightly. –  Finally tighten the bolts in sequence -1 … 10-. –  Install cylinder head cover → Chapter. –  Renew camshaft seal → Chapter.

–  Tighten bolts -Arrows- for rear toothed belt guard. –  Fit the spring buckle in the camshaft.   Caution If a piston is at TDC the valves could strike the piston when turning the camshaft. For this reason, none of the pistons should be at TDC. Otherwise there is a risk of damage to valves and pistons.

–  Camshaft sprocket, using counter-holder -3415-. –  Install toothed belt (adjust valve timing) → Anchor.   Note t  After assembling the frame and cylinder head covers it is necessary for the sealing paste to dry for approx. 30 minutes. t  After installing the camshaft wait for approx. 30 minutes before starting engine. The hydraulic elements should be allowed to sit in place (if not, the valves may press on the cylinder). t  After working on the valve gear, turn the engine carefully at least 2 rotations to ensure that none of the valves make contact when the starter is operated. Tightening torques

Components:		Nm
Rear notched belt guard	M6	10 → Remark
on cylinder head	M8	23 → Remark
Camshaft gear to camshaft		100
Conductor frame to cylinder head		23

1)  Fit with locking fluid; locking fluid → Parts catalogue