Removal and installation camshafts (VW Passat B6)

Removal camshafts

Remove the phase shifter.

Note: It is prohibited to process the lower seating surface of the camshaft frame and the upper cylinder head.

Note: The camshaft bearings are built into the cylinder head and camshaft frame. Before removing the camshaft frame, the timing belt must be loosened.

Note: After unscrewing the camshaft frame, be sure to replace the camshaft oil seal and cover.

Remove the timing belt.



Unscrew the camshaft gear (use a counter support to secure it) (fig. 2.112).



Remove the camshaft gear with a puller or paw (fig. 2.113).

Unscrew the rear cover of the timing belt from the cylinder head.



Loosen the camshaft frame mounting bolts evenly from the edges to the center and remove the frame.

Carefully lift the camshafts upward and place them on a clean surface.



Remove old sealant from the camshaft frame groove and from the mounting surfaces (fig. 2.114).

Prevent dirt and sealant residue from getting into the cylinder head.

Installing camshafts

Lubricate the working surfaces of the camshafts with engine oil.

Note: The seating surfaces must be free of oil and grease.

Note: Pistons should not be at TDC.

Note: Check that all roller levers are properly installed on the valve stem tails.

Carefully insert the camshafts into the camshaft bearings of the cylinder head. The cams A, 4th cylinder, should be facing each other (fig. 2.115).


Apply an even, slightly raised bead of sealant (D 154 103 A1) into a clean groove in the camshaft frame (fig. 2.114).

Note: Do not apply the sealant too thickly. If necessary, remove excess sealant with a lint-free cloth.

Note: The camshaft frame must be installed and bolted without interruption, as the sealant begins to harden immediately after the seating surfaces come into contact.

Note: Observe the expiration date of the sealant.

Place the camshaft frame on the cylinder head.

Vehicles with BLR, BLX, BVX and BVY engines

Position the camshaft frame so as not to touch the EGR valve.

Continuation of installation operations for all vehicles

Tighten the bolts loosely in several passes, starting from the center and moving outward.



Finally, tighten the bolts in the sequence shown in Figure 2.116 to a torque of 8 Nm + 90°.

Press the cover with a mandrel to a depth of 1–2 mm.

Install the camshaft oil seal.

Install the rear timing belt cover.

Insert the parallel key into the camshaft.

Install the camshaft gear. Hold the camshaft gear with a counter support to tighten the bolt (fig. 2.114). Tightening torque 65 Nm.

Note: When turning the camshaft, none of the pistons should be at TDC. There is a risk of damage to the valves/piston.

Make sure the prismatic key is installed correctly.

Install the timing belt.

Install the phase shifter.

Install the cylinder head cover.

Further assembly is carried out in the reverse order of disassembly.