Dismantling And Assembling Pistons And Conrods; Pistons And Conrods - Exploded View - Audi A8 2003 Workshop Manual

Audi A8 2003 ➤
8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
5 Dismantling and assembling pistons
and conrods
⇒ "5.1 Pistons and conrods - exploded view", page 98
⇒ "5.3 Piston and cylinder dimensions", page 102
⇒ "5.4 Measuring radial clearance of conrods", page 102
⇒ "5.5 Allocation of conrod bearing shells", page 103
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
⇒ "5.6 Measuring piston projection at TDC", page 103 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
5.1

Pistons and conrods - exploded view

Note
Oil spray jet for piston cooling
1 - Conrod bolts, 35 Nm + 90°
1
( / 4 turn) further
❑ Renew
❑ Use old bolts when
measuring radial clear‐
ance
❑ Lubricate threads and
contact surface
2 - Conrod bearing cap
❑ Do not interchange
❑ Mark cylinder allocation
in colour -B-
⇒ page 101
❑ Installation position:
Note position of lugs on
casting -A-
3 - Bearing shells
❑ Note installation posi‐
tion
❑ Renew used bearing
shells
❑ Install new bearing
shells with the correct
coloured markings
⇒ page 103
❑ Measuring radial clear‐
ance ⇒ page 102
4 - Conrod
❑ Only renew as a com‐
plete set
❑ Mark cylinder allocation
in colour -B-
⇒ page 101
❑ Installation position:
Note position of lugs on casting -A-
❑ Installation position of conrod pairs
❑ Axial clearance of one pair of conrods, new: 0.20 ... 0.38 mm; Wear limit: 0.60 mm
❑ Measuring radial clearance
98
Rep. gr.13 - Crankshaft group
⇒ page 99 .
⇒ page 101
⇒ page 102