Audi A8 2003 Workshop Manual page 145

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
1 - Bearing mounting for drive
sprocket
1
2 - 20 Nm + 45° ( / 8 turn) fur‐
ther
❑ Renew
1
3 - 5 Nm + 90° ( / 4 turn) further
❑ Renew
1
4 - 5 Nm + 90° ( / 4 turn) further
❑ Renew
5 - Thrust washer for drive
sprocket
6 - Drive sprocket for timing
chain (left-side)
7 - Drive chain for valve gear
❑ Before removing, mark
running direction with
paint
8 - Guide rail
❑ Note installation posi‐
tion
1
9 - 5 Nm + 90° ( / 4 turn) further
❑ Renew
1
10 - 5 Nm + 90° ( / 4 turn) fur‐
ther
❑ Renew
11 - Bearing bracket for drive
sprocket
12 - Thrust washer
13 - Drive sprocket for timing chain (right-side)
14 - Bolt with sleeve: 5 Nm + 90° (
❑ Renew
15 - O-ring
❑ Renew
16 - Chain tensioner
1
17 - 5 Nm + 90° ( / 4 turn) further
❑ Renew
18 - Tensioning rail
19 - Crankshaft
❑ With chain sprockets
20 - Guide rail
21 - Bolt with sleeve: 5 Nm + 90° (
❑ Renew
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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.
1
/ 4 turn) further
1
/ 4 turn) further
Audi A8 2003 ➤
139
1. Chain drive