Audi Workshop Service and Repair Manuals > A4 Mk1 > Power unit | 6-cylinder diesel direct injection engine (TDI), mechanics | Engine cylinder head, valve gear | Valve gear | Removing and installing outer camshaft bearing caps

Removing and installing outer camshaft bearing caps

Special tools and workshop equipment required

t	Sealant → Electronic parts catalogue

Note

In the event of leakage in the area of the outer camshaft bearing caps, caps are to be removed and sealant applied.

Removing

–	Remove cylinder head cover: left-side → Chapter; right-side → Chapter.

–	Remove bolts -1- for exhauster pump with heat shield on cylinder head (left-side) and turn pump in anti-clockwise direction -arrow-.

–	Move exhauster pump clear to the rear (leave hose attached).

–	Unscrew outer bearing caps.

Installing

–	Remove any traces of remaining sealant from cylinder head and camshaft bearing caps.

–	Clean contact surfaces between cylinder head and bearing caps; surfaces must be free from oil and grease.

–	Apply a small quantity of sealant to -hatched areas- of outer bearing cap at front left/rear right.

–	Apply a small quantity of sealant to -hatched areas- of outer bearing cap at rear left/front right.

Note

Sealant must not be allowed to come into contact with -grey-shaded areas- shown in illustration.

–	Fit outer bearing caps.

Remaining installation steps are carried out in reverse sequence; note the following:

Note

Renew seals for cap nuts and O-rings for exhauster pump.

–	Renew sealing cap (rear) on cylinder head (right-side).

–	Using a suitable drift, knock in new sealing cap (core plug) -arrow- until flush.

–	Install cylinder head cover: left-side → Chapter; right-side → Chapter.

Tightening torques

Component		Nm
Bearing cap to cylinder head	Cap nut	15
	Nut	10
	Bolt	10
Exhauster pump to cylinder head		10

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