A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
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When installing old drive chain, line up paint markings (arrows).
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If a new drive chain is installed, distance between notches -A- and -B- on camshafts must equal the distance between 16 drive chain rollers.
Illustration shows where first and sixteenth drive chain rollers must be installed on chain gears.
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Notch -A- is slightly offset inward toward drive chain roller -1-.
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Slide in hydraulic chain tensioner between drive chain.
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Install camshafts with drive chain and hydraulic chain tensioner into cylinder head.
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Oil camshaft contact surfaces.
Note:
Alignment bushings for bearing caps and hydraulic chain tensioner must be installed cylinder head.
When installing bearing caps, verify markings cap is readable from intake side of cylinder head.
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Tighten hydraulic chain tensioner (pay attention to alignment bushings).
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Tighten bearing caps -2- and -4- of intake and exhaust camshafts in alternating diagonal sequence (pay attention to alignment bushings
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Install both bearing caps on chain sprockets intake and exhaust camshafts.
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Verify correct position of both camshafts.