tow AUDI A4 1997 B5 / 1.G AEB ATW Engines Valvetrain Servicing Workshop Manual
Page 26 of 51
15-52
- Verify that camshafts are at TDC Cyl 1.
Both camshaft markings must align with arrows on bearing caps.
- Clean drive chain and camshaft chain gears opposite both arrows on
bearing caps. Mark installed position using paint.
Note:
Do not mark chain using punch, filing a notch or similar procedures.
The distance between the two arrows/paint marks is equivalent to
16 drive chain rollers.
The notch on the exhaust camshaft is slightly offset inward toward
drive chain roller (arrow-1-).
Pa
ge 26 of 51 Valvetrain, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.15.3
Page 28 of 51
15-54
Install drive chain on camshaft chain gear as
follows:
- When installing old drive chain, line up paint markings (arrows).
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.
Notch -A- is slightly offset inward toward drive chain roller -1-.
- Slide in hydraulic chain tensioner between drive chain.
Pa
ge 28 of 51 Valvetrain, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.15.3
Page 30 of 51
15-56
- Verify correct position of both camshafts.
Both camshaft markings must align with arrows on bearing caps
(arrows).
The distance between the two arrows/paint markings is equivalent
to 16 drive chain rollers.
The notch on exhaust camshaft is slightly offset inward toward
drive chain roller -1-.
Pa
ge 30 of 51 Valvetrain, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.15.3