Volkswagen Golf Service & Repair Manual: Removing and installing camshaft housing

Removing

Remove coolant pump → Chapter.
Remove air filter housing → Chapter.
Remove ignition coils → Chapter.
Detach toothed belt from camshafts → Chapter.
Disconnect electrical connector -1-.

Detach hose clip -2- and pull off hose.
Remove high-pressure pipe -3- → Chapter.
Disconnect electrical connector -2-.

Removing and installing camshaft housing

Remove bolts -arrows- and detach connection -1-.

Release hose clip -2- and detach coolant hose.
Remove bolts -arrows- and pivot coolant lines -1- to right side.

Unscrew bolts -arrows- and remove heat shield -1-.

Disconnect connector -arrow- from intake manifold sender -GX9-.

Separate electrical connectors:

1 -	For cam actuators -N583-/-N587-/-N591-/-N595- (only for CPTA)

2 -	For Hall sender -G40- and Hall sender 3 -G300- (only for CPTA, CHPA)

4 -	For camshaft control valve 1 -N205- and exhaust camshaft control valve 1 -N318- (only for CPTA, CHPA)

Unscrew bolt -3- and lay wiring harness clear to one side.
Pull out dipstick -5-.

Loosen bolts for camshaft housing in the sequence -15 ... 1- and remove.
Carefully detach camshaft housing from adhesive bond and remove it.
Mark allocation of roller rocker fingers and compensation elements for reinstallation.
Remove roller rocker fingers together with compensation elements and place them on a clean surface.

Installing

Note

Renew bolts that are tightened with specified tightening angle.

Renew gasket and seal with oil strainer.

Check “TDC” position of camshaft and crankshaft:

Engine codes CPTA, CZEA

Camshaft clamp -T10504- fitted on camshaft housing.

Engine codes CHPA, CMBA, CPVA, CXSA, CZDA, CZCA, CPVB

Camshaft clamp -T10494- must be attached to camshaft housing.

Risk of damage to valve gear caused by camshafts being moved in axial direction.Never move camshafts in axial direction when turning them.

Locking pin -T10340- screwed into cylinder block as far as stop and tightened to 30 N·m. Crankshaft has been turned in direction of engine rotation until it rests against locking pin -T10340- = “TDC” position.

Check, if all roller rocker fingers are seated properly on valve stem end and if they are clipped into the respective compensation element.

Note The oil strainer is fitted only if the cylinder head has the appropriate recess.

Cylinder heads with recess do not require an oil strainer.

Fit seal with oil strainer -2- into cylinder head -1-.
Fit gasket onto dowel pins -arrows-.

Screw 2 studs -items 2, 4- (e.g. -T10288/4-) into cylinder head.
Carefully lower camshaft housing -3- vertically onto studs in cylinder head.

Note

Ensure that camshaft housing is not canted.

Tighten bolts for camshaft housing.

Specified torque and tightening sequence, engine codes CPTA, CZEA → Fig..

Specified torque and tightening sequence, engine codes CHPA, CMBA, CPVA, CXSA, CZDA, CZCA, CPVB → Fig. Remaining installation steps are carried out in reverse sequence; note the following:

Install high-pressure pipe → Chapter.
Install toothed belt (adjust valve timing) → Chapter.
Install ignition coils → Chapter.
Install coolant pump → Chapter.
Electrical connections and routing → Current flow diagrams, Electrical fault finding and Fitting locations.

Risk of damage to engine

Avoid damage to valves and piston crowns after working on valve gear.

Turn the engine carefully at least 2 rotations to ensure that none of the valves make contact when the starter is operated.

Removing and installing camshaft housing