A8 Quattro Sedan V8-4.2L (BVJ) (2008)
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Apply sealant beads - 1, 3, 4 - on clean guide frame sealing surfaces as shown in illustration.
‹› Thickness of sealant beads: 2.5 mm.
CAUTION!
Risk of contaminating camshaft bearing with excess sealant.
‹› Do not apply sealant beads thicker than specified.
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Place guide frame on cylinder head.
‹› Ensure camshafts can be inserted in guide frame axial bearing without force.
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Insert Locating Pins (T40116) in guide frame and cylinder head.
‹› Because the sealant begins hardening immediately, guide frame must be promptly positioned and tightened.
‹› After the guide frame has been installed, sealant must dry approximately 30 minutes.
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Tighten guide frame bolts => [ Guide frame tightening sequence ] See: Service and Repair/Valvetrain Assembly Overview