SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cyl., injection engine (4V) | Engine cylinder head, valve gear | Cylinder head: Removing and installing | Camshaft housing: Removing and installing

Install

Test conditions

l	The pistons should not be at TDC.

l	The crankshaft pinion should be fixed to the latter with one bolt and two washers.

l	The camshaft pinions, locked in the housing with the -T10016- and secured against involuntary rotation.

Note!

When turning the camshafts, the valves can hit against the pistons if the latter are at TDC.

–	Eliminate the sealant residues from the cylinder head and the camshaft housing with a flat scraper or standard sealant remover.

–	Avoid dirt and sealant residue getting into the cylinder head.

–	The contact surfaces must be free of oil and grease.

–	Apply a thin, uniform coating of sealant on the clean surface of the cylinder head housing; see the shaded surface in the illustration.

Note!

Do not apply sealant too thickly as the excess could get into the oil flow holes and cause damage to the engine.

–	Check that all the rocker arms rest properly on the valve stem ends -1- and are attached to the respective support elements -2-.

–	Screw two studs (M6 x 70) into the cylinder head before installing the camshaft housing.

–	Carefully fit the camshaft housing vertically from above onto the studs and pins of the cylinder head -arrows-.

–	Tighten uniformly the new camshaft housing bolts, in an outwards cross pattern.

Check that the camshaft housing does not tilt.

Tightening torque: 10 Nm + retighten ¹/₄ of turn (90°)

Note!

After installing the camshaft housing, let the sealant dry for about 30 minutes.

Continue the installation in the reverse order of removal.

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