warning AUDI A4 1998 B5 / 1.G AEB ATW Engines Valvetrain Servicing Workshop Manual
Page 10 of 51
15-39
WARNING! Fig. 1 Valve dimensions
Valves must not be refaced by cutting or grinding.Only hand lapping is permitted.Dimension
Intake valve
Exhaust valve
Diameter -a-
mm
(in.) 26.80-27.00(1.055-
1.063) 29.80-30.00(1.173-
1.181)
Diameter -b-
mm
(in.) 5.95-5.97
(0.2339-0.2350) 5.94-5.95
(0.2339-0.2343)
Length -c- mm
(in.) 104.84-105.34
(4.127-4.147) 103.64-104.14
(4.080-4.099)
Angle -a-
45
45
Pa
ge 10 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 11 of 51
15-40
WARNING!
Sodium-filled exhaust valves must not be
scrapped without first being properly treated.
The valves must be cut open using a
hacksaw, by hand, between the valve head
and the middle of the stem.
The valves must not come into any contact
with water while being cut.
After cutting open the valves, throw not more
than 10 at a time into a bucket of water and
step back. A sudden chemical reaction will
occur during which the sodium filling is
consumed.
Valves that have been treated in this way can
be disposed of as normal waste.
Pa
ge 11 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 46 of 51
15-70
WARNING!
Valves must not be refaced by cutting or
grinding.
Only hand lapping is permitted.
WARNING!
Sodium-filled exhaust valves must not be
scrapped without first being properly treated.
The valves must be cut open using a
hacksaw, by hand, between the valve head
and the middle of the stem.
The valves must not come into any contact
with water while being cut.
After cutting open the valves, throw not more
than 10 at a time into a bucket of water and
step back. A sudden chemical reaction will
occur during which the sodium filling is
consumed.
Valves that have been treated in this way can
be disposed of as normal waste.
Pa
ge 46 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