check oil AUDI TT 1998 8N / 1.G AEB ATW Engines Pistons And Connecting Rods Workshop Manual

13-56


8 -
Connecting rod
Replace only as a setMarkings -B- indicate which cylinder each
rod belongs to
Installed position:Marks -A- point toward belt pulley sideWith oil bore for piston pin lubrication
9 -
Circlip
10 -
Piston pin If stiff, warm pistons to approx. 60 C
(140 F) When removing and installing, use
VW222a pilot drift
11 -
Piston rings Offset by 120Use piston ring pliers to remove and installMarking "TOP" must point to piston headChecking piston ring end gap Fig. 1Checking piston ring side clearance Fig.
2

Pa
ge 4 of 9 Pistons and connectin
g rods, disassemblin
g and assemblin
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.GE02.13.4

13-58


Fig. 1 Checking piston ring end gap
- Insert ring at right angle from top and slide down until approx. 15 mm
(19/32 in.) from lower edge of cylinder. To insert, use piston without
rings. Piston ring
End gap, new mm (in.)
Wear limit
mm (in.)
1. Compression ring 0.20-0.40
(0.0078-0.0157) 0.8
(0.0315)
2. Compression ring 0.20-0.40
(0.0078-0.0157) 0.8
(0.0315)
3. Oil scraper ring 0.25-0.50
(0.0098-0.0197) 0.8
(0.0315)

Fig. 2 Checking piston ring side clearance
- Before checking, clean ring groove.Piston ring
Side clearance, new mm (in.)
Wear limit
mm (in.)
1. Compression ring 0.06-0.09
(0.0023-0.0035) 0.20
(0.0078)
Pa
ge 6 of 9 Pistons and connectin
g rods, disassemblin
g and assemblin
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.GE02.13.4