13-4
Cylinder block, crankshaft and
flywheel, servicing Notes:
Always replace seals and O-rings.
The engine speed sensor is installed in the
transmission bellhousing with a spacer washer
underneath.
1 -
Main bearing cap bolts
Always replace60 Nm (44 ft lb) + additional 180 (1/2 turn)
2 -
Main bearing caps
Always replace boltsMarking -1- on oil pump sideChecking bearing clearance page 13
-25
3 -
Connecting rod bearing bolts
Always replace30 Nm (22 ft lb) + additional 90 (1/4 turn)When measuring radial clearance, tighten
to 20 Nm (15 ft lb), but do not turn further
Pa
ge 1 of 33 C
ylinder block, crankshaft and fl
ywheel, servicin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.13.2
13-31
Checking piston ring end gap
Engine codes AHA, ATQ - Insert ring at right angle from top and slide down into lower cylinder
opening until approx. 15 mm from lower edge of cylinder. Piston ring
End gap, new mm. (in.)
Wear limit mm.
(in.)
1
(compression) 0.35-0.50 mm (0.014-0.020
in.) 1.0 mm (0.039 in.)
2
(compression) 0.50-0.70 mm (0.020-0.028
in.) 1.4 mm (0.043 in.)
3 (oil scraper) 0.25-0.50 mm (0.010-0.020
in.) 0.8 mm (0.031 in.)
Pa
ge 30 of 33 C
ylinder block, crankshaft and fl
ywheel, servicin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.13.2
