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Removing and installing sump > < Part I: Sump, balance shaft assembly - exploded view

A4 Mk2

Part II: Balance shaft assembly with oil pump - exploded view
Part II: Balance shaft assembly with oil pump - exploded view
Part I: Sump, balance shaft assembly → Chapter
   
1 - Chain guard
2 - Chain
q   Before removing, mark running direction (fitting position) with paint
3 - Dowel sleeve
4 - Spacer plate
5 - Balance shaft assembly with oil pump
q   Before installing, check that the two dowel sleeves for centring oil pump/cylinder block are fitted
q   Removing and installing → Chapter
6 - 9 Nm
7 - Cover
q   Prevents foam build-up in engine oil
8 - 40 Nm
9 - 8 Nm
10 - Oil intake pipe
q   Clean strainer if dirty
11 - O-ring
q   Renew
12 - Bolt
q   Renew
q   Note different bolt lengths → Fig.
q   Tightening sequence → Fig.
13 - Bolt
q   Renew
q   With seal
q   Note different bolt lengths → Fig.
q   Tightening sequence → Fig.
14 - Outer rotor
q   Check contact surfaces for scores
q   Marking must be visible
15 - Inner rotor
q   Check contact surfaces for scores
16 - Oil pump cover
17 - Chain sprocket
18 - 20 Nm + turn 90° further
q   Renew
19 - Chain tensioner with tensioning rail
q   Pre-tensioning before installing → Chapter
20 - 15 Nm

   
Tightening sequence for balance shaft assembly
  Note
Note different bolt lengths → Fig..
–  Tighten bolts -arrows- in 3 stages as follows, working from the inside outwards:
1.  Tighten bolts hand-tight.
2.  Tighten bolts to 15 Nm.
3.  Turn bolts 90° further.
  A17-10108
Positions of bolts for balance shaft assembly
A - Hexagon collared bolt M7x40
B - Hexagon collared bolt M7x70
C - Hexagon collared bolt M7x90
D - Hexagon collared bolt M7x55
E - Screw plug with O-ring
  A17-10106

Removing and installing sump > < Part I: Sump, balance shaft assembly - exploded view